Prevac MG15 User Manual
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Prevac MG15 User Manual

Multi gauge controller
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USER MANUAL
MG
MULTI GAUGE CONTROLLER

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  • Page 1 USER MANUAL MULTI GAUGE CONTROLLER...
  • Page 3 OPERATING MANUAL English translation MULTI GAUGE CONTROLLER Document no. Rev. Firmware version . Precision and Vacuum Technology...

  • Page 5: Table Of Contents

    MULTI GAUGE CONTROLLER Contents Contents INFORMATION ABOUT VERSION - RELEASE NOTE ....INTRODUCTION INTENDED USE ......... SAFETY .
  • Page 6 Contents MULTI GAUGE CONTROLLER ALPHANUMERIC KEYPAD ......SETUP MENU ........SETUP SHORTCUTS .
  • Page 7 MULTI GAUGE CONTROLLER Contents MODBUS RTU ........MODBUS TCP .
  • Page 8 List of Tables MULTI GAUGE CONTROLLER List of Tables Device speci ication ........Description of pins of active channel socket.
  • Page 9 MULTI GAUGE CONTROLLER List of Figures List of Figures Make sure that no objects enter through the vent holes of the device. Keep the device dry..........Dimensions .
  • Page 10 List of Figures MULTI GAUGE CONTROLLER Menu bar - video player ........Video player - menu .

  • Page 11: Information About Version - Release Note

    INFORMATION ABOUT VERSION - RELEASE NOTE Information about MG device version can be found at www.prevac.eu, in the DOWNLOAD tab. There is information about any possible changes in subsequent versions of the device or software. INTENDED USE The MG multi gauge controller is a universal devices controlled by a microprocessor, able to sup- port several types of pressure gauges in a range of ⋅...

  • Page 12: General Safety Instructions

    INTRODUCTION MULTI GAUGE CONTROLLER . Information on possible damage to the device. . Information on correct handling or use. Disregarding safety notes can lead to malfunctions or device damage. . Note. Indicates particularly important, but not safety-relevant information. GENERAL SAFETY INSTRUCTIONS The MG has been designed to maximally protect the user and his environment against burns or electric shocks, mechanical hazards, high temperature and ire spreading out of the device.
  • Page 13 Self-con iguration of the device. sults in waiver of the PREVAC’s liability for proper functioning of the device. Figure . : Make sure that no objects enter through the vent holes of the device. Keep the device dry.

  • Page 14: Grounding

    SPARE PARTS AND MODIFICATIONS Replacement of spare parts, modi ications and repairs may be carried out only by the PREVAC’s authorized personnel. Therefore, the device must be delivered to the PREVAC’s service.

  • Page 15: Technical Data

    MULTI GAUGE CONTROLLER INTRODUCTION TECHNICAL DATA MECHANICAL DATA The section describes the external dimensions of the device. Figure . present the MG , which may be rack-mounted or used as a desktop device. Figure . : Dimensions User manual rev. Page...

  • Page 16: Specification

    INTRODUCTION MULTI GAUGE CONTROLLER SPECIFICATION TECHNICAL DATA PARAMETER DESCRIPTION Power supply ELECTRICAL PARAMETERS Frequency Current consumption . A ( Maximum power consumption Protection class Overvoltage category Power supply connection socket European connection socket IEC Fuse . A ( Measurement channels active channels MEASUREMENT CHANNELS up to * passive channels...
  • Page 17 MULTI GAUGE CONTROLLER INTRODUCTION continued from previous page Accuracy of measurement fA*** PARAMETER DESCRIPTION Sampling frequency Screen refreshment Temperature drift Automatically adjusted by internal temperature control Active gauge GAUGE CONNECTION Passive gauge SVDEU + BNC Communication interfaces , Ethernet, PROFINET* COMMUNICATION Digital inputs Digital outputs...

  • Page 18: Operation

    INTRODUCTION MULTI GAUGE CONTROLLER OPERATION The device can be controlled in two ways: • Manually on the display with touch panel. • Remotely via RS , RS or Ethernet, see chapter . . . STANDARDS • The MG conforms to the following standards and harmonised standards: –...

  • Page 19: Unpacking

    MULTI GAUGE CONTROLLER INSTALLATION INSTALLATION This chapter describes the procedures for unpacking, mechanical installation and electrical instal- lation. Take care when lifting the unit that the weight and position do not exceed comfortable limits. UNPACKING . Visually inspect the transport packaging for signs of external damage. .

  • Page 20: Cooling

    INSTALLATION MULTI GAUGE CONTROLLER If the product is installed in a rack, the protection class of the rack (protection Protection class of the rack. from foreign bodies and water) is likely to be lowered, e.g. according to the EN - regulations for switching cabinets. Take appropriate measures to restore the required protection class of the rack.

  • Page 21: Mains Switch

    MULTI GAUGE CONTROLLER INSTALLATION Improperly grounded devices can be extremely dangerous in the event of a Main power supply. fault. Use three-conductor mains or extension cables with protective ground only supplied with the MG . Plug the mains cable into wall sockets with pro- tective ground only.

  • Page 22: Device Rear Panel

    INSTALLATION MULTI GAUGE CONTROLLER DEVICE REAR PANEL This section describes the sockets and connections of the rear panel. Read this section to properly connect the accessories available for the device. Figure . : View of the rear panel of the standard MG The following connections are installed on the rear panel: •...
  • Page 23 MULTI GAUGE CONTROLLER INSTALLATION Figure . : View of the rear panel of the MG with optional PROFINET interface. The following connections are installed on the panel: • A - Passive gauges connections • B - Connections for passive gauges measuring signal •...

  • Page 24: Active Channels

    INSTALLATION MULTI GAUGE CONTROLLER ACTIVE CHANNELS The active channels connections are used to connect gauges. The active channels use an -pin RJ connector. Figure . : Active channel socket (RJ Voltage VDC (max. A) PIN NUMBER FUNCTION DESCRIPTION Power supply ground Analogue input Analogue signal input Identi ication...

  • Page 25: Passive Channels

    MULTI GAUGE CONTROLLER INSTALLATION PASSIVE CHANNELS The passive channels connections are used to connect passive gauges with hot cathode. -pin UTG (Metalok Bantam) sockets are available for the passive channels. Figure . : Passive channel socket (UTG-type) Filament Filament supply (max. . V A) PIN NUMBER FUNCTION DESCRIPTION...

  • Page 26: Remote Control

    INSTALLATION MULTI GAUGE CONTROLLER REMOTE CONTROL The device is equipped with the following interfaces: • Serial RS (Selected in menu), • Ethernet (compliant with IEEE • Pro iNet (option). Figure . : Modbus RTU and TCP remote control module Figure . : Pro iNet remote control module (option) The parameters of the device can be read via the remote control interfaces at any time.

  • Page 27: I/O Interface

    MULTI GAUGE CONTROLLER INSTALLATION I/O INTERFACE The I/O connections contains the following signal pins: • digital inputs • relay outputs • analogue outputs Figure . : I/O socket (D-sub HD -pin female) Digital input ( V voltage activated, type mA) PIN NUMBER FUNCTION DESCRIPTION...

  • Page 28: Relay Outputs Connection (Setpoints)

    INSTALLATION MULTI GAUGE CONTROLLER RELAY OUTPUTS CONNECTION (SETPOINTS) Figure . : Setpoints socket (D-Sub female) SP _NC Setpoint , normally closed contact PIN NUMBER FUNCTION DESCRIPTION SP _NO Setpoint , normally open contact SP _COM Setpoint , common contact SP _NC Setpoint , normally closed contact SP _NO Setpoint , normally open contact...

  • Page 29: Address Dip Switch

    MULTI GAUGE CONTROLLER INSTALLATION ADDRESS DIP SWITCH Figure . : Address DIP Switch To communicate with the MG controller the device must be assigned with a unique address set via the address DIP switch. . MG To set an address use switches - . They encode the device address in the binary code. controller with LCD display Weights and values of individual switches are described in table .

  • Page 30: Interface Selection

    INSTALLATION MULTI GAUGE CONTROLLER Communication interface can be selected as shown below: - OFF - OFF - OFF - ON - ON Pro iNet Table . : Interface selection • without Pro iNet communication socket Address FUNCTION Table . : DIP switches functions To set an address use switches - .

  • Page 31: Switching On The Device

    MULTI GAUGE CONTROLLER OPERATION OPERATION The MG multi gauge controller can be interacted via the touch panel. SWITCHING ON THE DEVICE In order to turn on the device make sure that all of the connections on the rear panel are made correctly and that the AC connection meets the AC source requirements.

  • Page 32: Display With Touch Panel

    OPERATION MULTI GAUGE CONTROLLER DISPLAY WITH TOUCH PANEL The device is equipped with a TFT ” colour display with a format. The display has an integrated touch panel enabling communication with the user. The touch panel can record only a single press at a time. It is forbidden to touch the panel at several points simultaneously.

  • Page 33: Front Panel - Black Box

    MULTI GAUGE CONTROLLER OPERATION FRONT PANEL - BLACK BOX Figure . : Front panel in BlackBox version • A - Diodes signalling active Setpoints • B - Diode signalling that power is ON • C - Socket to connect the panel with a graphic display •...

  • Page 34: User Interface

    OPERATION MULTI GAUGE CONTROLLER USER INTERFACE The MG is equipped with a colour display with touch screen. All control operations, entering settings and data are carried out only via the touch screen. Information displayed by the device are grouped in three separate windows: •...

  • Page 35: Main Window

    MULTI GAUGE CONTROLLER OPERATION MAIN WINDOW The device has one main view on which the most important parameters controlled by the device are displayed. Figure . : Description of main window • A - Setpoints con iguration button • B - Diodes indicating active Setpionts •...
  • Page 36 OPERATION MULTI GAUGE CONTROLLER . . . SETPOINTS MENU This parameter group allows you to con igure the switching of relays functions. The MG is equipped with relays which are switched depending on the measured pressure. Fig. . shows the set- points behaviour: Figure .

  • Page 37: Gauge Change

    MULTI GAUGE CONTROLLER OPERATION Figure . : Setpoints settings . . . GAUGE CHANGE To change a gauge in the main view click on the gauge name. The gauge selection menu will appear, see chapter . . Figure . : Gauge change User manual rev.

  • Page 38: Pressure Unit Change

    OPERATION MULTI GAUGE CONTROLLER . . . MEASUREMENT UNIT CHANGE The MG enables de ining a unit of measurement for pressure values displayed for each channel separately. The following pressure units can be chosen: • mbar - pressure unit milibar •...

  • Page 39: Chart Window

    MULTI GAUGE CONTROLLER OPERATION CHART WINDOW The additional window contains a chart module. The module is used to visualise graphically the behaviour of a chosen physical quantity in time. In the further part of the manual a single physical quantity in time will be called data series. The time axis is scaled in minutes for the time of recording of charts up to one hour.

  • Page 40: View Of Selected Fragment Of Chart

    OPERATION MULTI GAUGE CONTROLLER . . . EDITING OF CHART PARAMETERS To change the chart drawing parameters follow the procedure presented in ig. . • A - Click on top ield, with currently drawn data series • B - Click on a selected parameter to be edited Parameters that can be edited: •...

  • Page 41: Change Of Chart Units

    MULTI GAUGE CONTROLLER OPERATION . . . CHANGE OF CHART UNITS To change the unit, in which the chart is being drawn, click on this unit and select the item on the list. Figure . : Change of chart units .

  • Page 42: Timer Window

    . Read the product key from the Device Settings → Chart Activation . Contact the sales department (+ lub sale@prevac.pl) and provide both num- bers and the product key. . After completing the procedure a licence key will be provided, which should be entered after clicking on the License key .

  • Page 43: Correct Activation Of Chart Module

    MULTI GAUGE CONTROLLER OPERATION Figure . : Correct activation of chart module Figure . : Entering system date . Enter a start value of the timer using the number keys from to 9 and symbol ”:” as a sepa- rator. Con irm the value by pressing the Enter button. .

  • Page 44: Numeric Keypad

    OPERATION MULTI GAUGE CONTROLLER NUMERIC KEYPAD Numerical values in the device can be edited via the numeric keypad. It consists of basic numbers from to and function keys to enter new data and update the existing ones. The numeric keypad is shown in ig.

  • Page 45: Increasing/Decreasing Value Via Numeric Keypad

    MULTI GAUGE CONTROLLER OPERATION Figure . : Increasing/Decreasing value via numeric keypad To enter a number in the exponential form: . Enter the value of the mantisee with an appropriate character via the numeric keypad (e.g. . ). . Press the Exponent key. The index character can be changes by clicking it twice. .

  • Page 46: Alphanumeric Keypad

    OPERATION MULTI GAUGE CONTROLLER ALPHANUMERIC KEYPAD The on-screen keyboard is used for entering alphanumeric data and also facilitates text entry. Fig- ure . shows the alphanumeric keyboard with description of the main keys. Figure . : Alphanumeric keypad Page User manual rev.

  • Page 47: Setup Menu

    MULTI GAUGE CONTROLLER OPERATION SETUP MENU Advanced con iguration of the device parameters is possible via the setup menu. Press the Show Menu icon to expand the menu and then press the Device setup button. All the mentioned button- s/icon are described below in ig. . Figure .

  • Page 48: Setup Shortcuts

    OPERATION MULTI GAUGE CONTROLLER SETUP SHORTCUTS Frequently used commands/settings can be conveniently accessed by creating shortcuts. To create a shortcut: . Navigate to the setup position where a shortcut should be created. . Press on the Setup shortcut, icon to add the position to shortcuts. To remove position from shortcut list tap again on the Setup shortcut icon.

  • Page 49: Example Warning And Error Messages

    MULTI GAUGE CONTROLLER OPERATION MESSAGES The MG will automatically display both warning and error messages as appropriate. Figure . : Example warning and error messages..WARNING MESSAGES Warning messages are displayed on the right of the screen. When present, they can be clicked to display the full warning information (see Figure .

  • Page 50: Video Player

    OPERATION MULTI GAUGE CONTROLLER Figure . : Error message . . . MULTIPLE MESSAGES If several errors or warnings occur simultaneously they are indicated with a counter on the right hand corner of a screen. The irst digit (red) of the message counter indicates the number of errors, the second digit (yellow) indicates the number of warnings occurred in the device.

  • Page 51: Menu Bar - Video Player

    MULTI GAUGE CONTROLLER OPERATION . . . PLAYING VIDEO In order to play a video go to the main screen and press the Menu icon on the bottom right corner of the screen to display the menu bar. Then press the Video player icon on the bottom right (see Figure .

  • Page 52: Deleting A Video Ile

    OPERATION MULTI GAUGE CONTROLLER Figure . : Deleting a video ile . To open a video, press Open. The video player is displayed. . Tap on the screen to see the video player menu. All the video player menu items are described in the igure below: Figure .

  • Page 53: Noti Ication About Detecting Usb

    MULTI GAUGE CONTROLLER OPERATION Figure . : Noti ication about detecting USB Figure . : USB menu - list of videos on USB Figure . : Copy *.avi to device User manual rev. Page...

  • Page 54: Setup Menu

    OPERATION MULTI GAUGE CONTROLLER SETUP MENU The menu is used to access the device setup options, such as the geometry of chambers, gauges, communication, etc. To save the changes follow the instructions set out in chapter . . MENU TREE •...
  • Page 55 MULTI GAUGE CONTROLLER OPERATION ∘ ∘ ∘ ∘ ∘ ∘ Baratron ∘ Torr ∘ Torr ∘ Torr ∘ Torr ∘ Torr ∘ psia ∘ psia ∘ psia ∘ psia ∘ psia ∘ psia ∘ psia ∘ psia ∘ psia ∘ psia ∘...
  • Page 56 OPERATION MULTI GAUGE CONTROLLER ∘ Digital IN ∘ Digital IN • Gas Type ∘ IG , IG , IG , CH , CH , CH , CH ∘ ∘ ∘ ∘ ∘ ∘ ∘ ∘ ∘ De ine • Filter ∘...
  • Page 57 MULTI GAUGE CONTROLLER OPERATION ∘ None ∘ Mode ∘ User Range ∘ ∘ EXPO ∘ Ranges ∘ Min Pressure ∘ Max Pressure ∘ Scale ∘ Linear ∘ Logarithmic ∘ Min Voltage ∘ Max Voltage • Trend ∘ IG , IG , IG , CH , CH , CH , CH ∘...
  • Page 58 OPERATION MULTI GAUGE CONTROLLER ∘ Caption ∘ System Date ∘ Date ∘ Time ∘ Language ∘ Chart Activation ∘ License key ∘ Close • Save/Load ∘ Save ∘ ∘ Load ∘ ∘ Load Default • Information ∘ ∘ Version ∘ From revision ∘...

  • Page 59: Gauge Configuration - Sensor Menu

    MULTI GAUGE CONTROLLER OPERATION GAUGE CONFIGURATION - SENSOR MENU Gauge selection menu. Select a gauge type compatible with the gauge type physically connected with the device. The following types of passive gauges are available: IE , De ined and active: CTR , IE , UHV- , UHV-...
  • Page 60 OPERATION MULTI GAUGE CONTROLLER High emission current for relatively high values of pressure may damage the Excessive emission current sensor. The emission current may be set at a given value only when the user is sure that the gauge will be operated at appropriately low pressures. .

  • Page 61: Bayard Alpert Gauge

    MULTI GAUGE CONTROLLER OPERATION . SELECTING FILAMENT Most of the available B-A gauges have two ilaments. In the Filament menu the user can choose between them - the MG will use the ilament selected in this menu. Also the de- gassing procedure applies to this ilament.

  • Page 62: Identifying Resistances For Supported Gauges

    OPERATION MULTI GAUGE CONTROLLER • Degassing voltage - May be set between V. The MG is used during degassing the electron bombardment method. It is recommended to carry out degassing at the highest voltage admissible by the gauge. At a higher voltage a lower emission current is required to obtain the same degassing power, which affects positively the life of the ilament.

  • Page 63: Degassing

    MULTI GAUGE CONTROLLER OPERATION where: A factor - factor A in the above equation B factor - factor B in the above equation min. Voltage - lower measuring range of gauge max. Voltage - upper measuring range of gauge max. Example: The User De ined gauge as below will behave identically to ITR gauge: A factor = .

  • Page 64: Readings Correction Of Gas Type - Gas Type Menu

    OPERATION MULTI GAUGE CONTROLLER READINGS CORRECTION OF GAS TYPE - GAS TYPE MENU As a standard, gauges are calibrated for measurements in nitrogen or air. If pressure measurements Setup menu →Gas type are carried out with other gases, readings can be corrected. The Gas Type parameter is used to set correction factor for a given gas type.

  • Page 65: Correction Factors For Bayard Alpert Gauges Not Implemented In The Device

    MULTI GAUGE CONTROLLER OPERATION � � � � ( � � ) � � (� � ) �� � ( � ) Table . : Correction factors for Bayard Alpert gauges not implemented in the device In the Gas Type menu the user can select a relevant correction factor for each channel indepen- dently.

  • Page 66: Filter

    OPERATION MULTI GAUGE CONTROLLER FILTER Dependent on whether the user needs stable readings or prompt fast system response, he can Setup menu →Filter choose between three iltering options depending: • Low - no averaging • Medium - averaging out of samples •...
  • Page 67 MULTI GAUGE CONTROLLER OPERATION . . . ANALOG OUTPUT CONFIGURATION - ANALOGUE OUTPUTS MENU Setup menu Each of the analogue outputs can send a signal in a range between - V. They can be used to control labelrightarrow Outputs settings →Analogue outputs external devices or record data.

  • Page 68: Trend

    OPERATION MULTI GAUGE CONTROLLER • LOGARITHMIC - logarithmic output It is often useful to retransmit the vacuum or other signal over a wide range, covering a dozen decades. In this case it is most convenient to operate with the input signal logarithm. The range of limits is de ined according to the logarithmic relation: �...
  • Page 69 MULTI GAUGE CONTROLLER OPERATION • Gateway - default gateway on a TCP/IP network, • DHCP - Dynamic ”Host” Con iguration: – enable - automatic con iguration on connection (IP address, gateway, subnet mask), – disable -IP protocol parameters must be set manually, •...

  • Page 70: Display Settings

    OPERATION MULTI GAUGE CONTROLLER DISPLAY SETTINGS To change display settings go to: Setup Menu →Device Settings →Display In Display submenu it is possible to change the following parameters: Brightness - display brightness value. Its value can be changed in the range of Touch Screen Autolock - When the value is set to ON, the autolock function is active.

  • Page 71: Information Menu

    MULTI GAUGE CONTROLLER OPERATION . Choose one of the slots on the list from which device settings will be loaded and click on it. . The selected device settings will be loaded. Default factory settings may also be loaded as follows: .

  • Page 72: Quick Start

    STEP BY STEP MULTI GAUGE CONTROLLER STEP BY STEP This chapter descries the con iguration procedure and irst start-up of the MG device. QUICK START . Install the device on the vacuum system and make all the necessary connections - see chapter .

  • Page 73: Language Selection

    MULTI GAUGE CONTROLLER STEP BY STEP Figure . : Communication interface con iguration LANGUAGE SELECTION In order to change the language the following steps should be taken: . Press the Menu button. . Click on the Setup menu. . In the Setup menu select the Device Settings -> Language .

  • Page 74: Notifications In Pressure Value/Inbformation Box

    TROUBLESHOOTING MULTI GAUGE CONTROLLER TROUBLESHOOTING This section describes the errors, warnings and noti ications appearing in the MG . All informa- tion displayed on the screens is divided into two groups: • Errors and warnings , which relate primarily to the device hardware are displayed in the mes- sage bar on the right side of the screen.
  • Page 75 MULTI GAUGE CONTROLLER TROUBLESHOOTING continued from previous page Check the measurement cable for short-circuits NOTIFICATION DESCRIPTION Replace the measurement cable Restart emission Pressure measured exceeds the critical Check for leaks Overpressure value Wait until pressure reaches the minimum value Restart emission No high voltage at the gauge anode or Check the connections of the controller HV Failure...

  • Page 76: Message Bar Notifications

    TROUBLESHOOTING MULTI GAUGE CONTROLLER continued from previous page NOTIFICATION DESCRIPTION Pressure in the gauge area is out of the Check the gauge and its type whether it is appro- High Pressure measuring range. priate for the application/process. Internal hardware error Turn off, wait for s, restart EEPROM Failure...
  • Page 77 MULTI GAUGE CONTROLLER TROUBLESHOOTING • M : Copy summary: Error when copying a translation ile. Copying the translation ile failed. • M : Copy summary: Error: Copying log ile timeout. Copying the log ile took too long, the copying process was interrupted. •...
  • Page 78 TROUBLESHOOTING MULTI GAUGE CONTROLLER – check gauge con iguration and in particular the gauge type – make sure that vacuum gauge is working • M High vacuum is too low. Possible solutions to this problem are shown below: : Unable degasing. Vacuum is too low. –...

  • Page 79: Communication

    MULTI GAUGE CONTROLLER COMMUNICATION COMMUNICATION INTRODUCTION This chapter is intended for users who want to use Modbus RTU, Modbus TCP (Ethernet) or op- tionally Pro iNet communication links. These are communication protocols used to control the functioning of the MG The following chapter includes general information about standards, wiring and electrical connec- tions.

  • Page 80: Precautions

    COMMUNICATION MULTI GAUGE CONTROLLER . . . GENERAL WIRING RULES . Communication cables should be laid separately and as far as possible from the power supply cables or cables supplying power to external equipment such as contactors, relays or motors. .

  • Page 81: Grounding

    MULTI GAUGE CONTROLLER COMMUNICATION GROUNDING The EIA standards suggest that both end of a screen should be connected with protective ground- ing. When, however, using such a connection, take special care and make sure that the differences of the local ground potentials are not suf icient to enable circulating current to low. They may cause not only large values of common signals in the data line, which may result in communication breakdown, but also overheating of the cable.

  • Page 82: Communication Interfaces

    COMMUNICATION MULTI GAUGE CONTROLLER COMMUNICATION INTERFACES Serial communication is possible in different standards. Depending on the protocol chosen, there are different communication connections. Descriptions of the connections for individual protocols are presented below. The RS , ETH and Pro inet ports of the MG are not optically iso- lated.

  • Page 83: Ethernet Connector

    MULTI GAUGE CONTROLLER COMMUNICATION ETHERNET CONNECTOR Figure . : Female socket of Ethernet baseT (Modbus TCP) interface Data transmission - differential pair positive conduc- PIN NUMBER FUNCTION DESCRIPTION Data transmission - differential pair negative conduc- Data reception - differential pair positive conductor Data reception - differential pair negative conductor , , , Not connected...

  • Page 84: Profinet Connector (Option)

    COMMUNICATION MULTI GAUGE CONTROLLER PROFINET CONNECTOR (OPTION) Figure . : Female socket of Pro iNet (Modbus RTU) interface Data transmission - differential pair positive conductor PIN NUMBER FUNCTION DESCRIPTION Data transmission - differential pair negative conductor Data reception - differential pair positive conductor Data reception - differential pair negative conductor , , , Not connected...

  • Page 85: Modbus Protocol

    MULTI GAUGE CONTROLLER COMMUNICATION MODBUS PROTOCOL INTRODUCTION This implementation is used to provide a popular format od data exchange between the devices in the network. Modbus enables communication between up to devices connected to the same network. Each SLAVE device has its unique address. The MG address is set via the switch on the rear panel (details in chapter .

  • Page 86: Interface Configuration

    COMMUNICATION MULTI GAUGE CONTROLLER The data link layer includes the following properties/behaviours: • identi ication of the Slave device address, • detection of beginning/end of a frame, • generation of CRC- checksum (Modbus RTU), • transmission/reception of ”time-out” messages, • detection of buffer thrashing, •...

  • Page 87: Modbus Rtu

    MULTI GAUGE CONTROLLER COMMUNICATION MODBUS RTU The serial communication for the Modbus RTU is make through EIA , EIA (formerly RS and RS ) or optionally Pro iNet (as encapsulation of the data frame) transmission. The EIA stan- dards have been introduced by the Electronics Industry Association and describe the electrical characteristics of communication networks.
  • Page 88 COMMUNICATION MULTI GAUGE CONTROLLER Note : The MG enables communication with a MASTER device with a write/read speed not exceeding frames/second..CONNECTION PARAMETERS Data bits PARAMETER VALUE Parity None Stop bits Flow control None Baudrate (default) Table . : Connection parameters .
  • Page 89 MULTI GAUGE CONTROLLER COMMUNICATION . . . CRC CHECKSUM The CRC checksum is a test of data correctness, and its length equals to bytes ( bites). After con- structing a message (data ield) the transmitting device calculates the CRC checksum and attaches it to the end of the message.
  • Page 90 COMMUNICATION MULTI GAUGE CONTROLLER Figure . illustrates this algorithm of checking CRC errors. Symbol ’⊕’ indicates XOR operation. “n” means a number of data bits. START xFFFF →CRC Register CRC Register ⊕ next byte of the message →CRC Register →n Shift CRC Register right one bit Over low? CRC Register ⊕...

  • Page 91: Modbus Tcp

    MULTI GAUGE CONTROLLER COMMUNICATION The example uses data of ”uint ” and ”uint ” types. The signs correspond, in turn, -bit integer CRC CHECKSUM CALCULATION - EXAMPLE IN C LANGUAGE number without sign (usually for most types of compilers ”unsigned short int”) and -bit integer number without sign (”unsigned char”).
  • Page 92 COMMUNICATION MULTI GAUGE CONTROLLER It is recommended to make all the settings of the communication interface before connecting to the Ethernet network. It is not necessary, however, the default settings may cause con licts with the devices already connected to the network. In case of the Modbus TCP network there are several other parameters: IP address, subnet mask, network default gate address and DHCP.

  • Page 93: Function Codes

    MULTI GAUGE CONTROLLER COMMUNICATION FUNCTION CODES The function codes have -byte length. These are instructions for Slave devices describing action to be executed. The following function codes are supported through the MG device. Read n-words FUNCTION CODE FUNCTION Write word Write n-words Table .
  • Page 94 COMMUNICATION MULTI GAUGE CONTROLLER . . . - WRITE WORD Query: Device Function Address of word to Value to be written address code x be written byte byte MSB LSB MSB LSB MSB LSB Response: Device Function Address of word to Value to be written address code x...

  • Page 95: Response In Case Of Error

    MULTI GAUGE CONTROLLER COMMUNICATION Example: Set IP address at value FF D B Query: Response: RESPONSE IN CASE OF ERROR The Modbus protocol de ines the reaction if errors occurs. The Slave device is able to detect a damaged query or a query which contains incorrect data. It responds then with error code. However, transmission errors may occur to which Slave devices cannot respond.

  • Page 96: Type Of Data Used In Communication

    COMMUNICATION MULTI GAUGE CONTROLLER continued from previous page Error Error type Description code Busy The server (Slave) is busy for long time with processing the pro- Message gramme commands. The Client (Master) should try again to send the discarded message later, when the server (Slave) is free. The response of the device inquired when the required action cannot knowledge be executed.
  • Page 97 MULTI GAUGE CONTROLLER COMMUNICATION . . . ENUMERATED, BOOL AND INTEGER PARAMETERS These variables are always occupying one word in the memory. For variables smaller than: bytes, the upper byte is illed with x value. These variables are read via x function, and they can be recorded via x or x function.

  • Page 98: Table Of Modbus Variables - Map Of Registers

    COMMUNICATION MULTI GAUGE CONTROLLER TABLE OF MODBUS VARIABLES - MAP OF REGISTERS NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] Channel – vacuum value FLOAT [mbar] BASIC INFORMATION ABOUT VACUUM CHANNELS Channel – status UINT see tab. . Channel – vacuum value FLOAT [mbar] Channel –...
  • Page 99 MULTI GAUGE CONTROLLER COMMUNICATION continued from previous page Setpoint HIGH – vacuum value FLOAT � .. � [mbar] NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] Setpoint LOW – vacuum value FLOAT � .. � [mbar] Setpoint HIGH – vacuum value FLOAT �...
  • Page 100 COMMUNICATION MULTI GAUGE CONTROLLER continued from previous page Channel - current time to complete UINT [sek] NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] degassing (sec) Channel - Degassing power UINT Channel - Filament selection UINT Channel - Sensitivity UINT Channel - Emission current UINT Channel - Calibration factor...
  • Page 101 MULTI GAUGE CONTROLLER COMMUNICATION continued from previous page Channel - Emission current UINT NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] Channel - Calibration factor UINT Channel - Grid voltage of def. gauge UINT Channel - Filament voltage of def. UINT gauge Channel...
  • Page 102 COMMUNICATION MULTI GAUGE CONTROLLER continued from previous page Channel - Re lector voltage of def. UINT NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] gauge Channel - Degas voltage of def. gauge UINT Channel - Max. ilament current of UINT def.
  • Page 103 MULTI GAUGE CONTROLLER COMMUNICATION continued from previous page Channel - ilter: - Low UINT NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] - Medium - High Channel - Gas type UINT see tab. . Channel - def. correction factor UINT Channel - Degassing time UINT [min]...

  • Page 104: Basic Registers Table

    COMMUNICATION MULTI GAUGE CONTROLLER continued from previous page Channel - Min. voltage of def. gauge UINT NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] Channel - Max. voltage of def. gauge UINT Channel - Full scale parameter of def. UINT gauge [Torr] Channel - Emission ON/OFF...

  • Page 105: Communication Registers Map

    MULTI GAUGE CONTROLLER COMMUNICATION Remote control enable UINT NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] Logical group UINT DHCP UINT IP address *UINT Subnet mask *UINT Default gate address *UINT Port UINT Table . : Communication registers map Digital output - assigned signal UINT see tab.

  • Page 106: Analogue Outputs Register Map

    COMMUNICATION MULTI GAUGE CONTROLLER NAME OF VARIABLE ADDRESS TYPE KIND RANGE [UNIT] Analog output - source UINT see tab. . ANALOG OUTPUT Analog output - mode UINT see tab. . Analog output - scale UINT see tab. . Analog output - Min. range FLOAT Analog output - Max.

  • Page 107: Vacuum Gauge Types

    MULTI GAUGE CONTROLLER COMMUNICATION VACUUM GAUGE TYPES Value Description ACTIVE GAUGES ANALOG_IN MKS_ ATMION User De ined Vacuum Gauge UHV A PASSIVE GAUGES NR_F_UHV User De ined Passive Vacuum Gauge Table . : Vacuum gauge types User manual rev. Page...

  • Page 108: Vacuum Gauges Possible Statuses

    COMMUNICATION MULTI GAUGE CONTROLLER VACUUM GAUGE POSSIBLE STATUSES Status OK Value Description Wait for emission Emission OFF Short cathode Pressure too high (out of vacuum gauge range) Anode voltage failure Bias voltage failure Re lector voltage failure Degas failure Gauge not calibrated No emission Offset calibration Low vacuum (out of vacuum gauge range)

  • Page 109: Emission Control Options

    MULTI GAUGE CONTROLLER COMMUNICATION EMISSION CONTROL OPTIONS Manual Value Description Setpoint Setpoint Setpoint Setpoint Setpoint Setpoint Setpoint Setpoint Setpoint Setpoint Digital input Digital input Digital input Digital input Table . : Emission control options GAS TYPE OPTIONS Value Description de ine Table .

  • Page 110: Setpoints Source Assignment Options

    COMMUNICATION MULTI GAUGE CONTROLLER SETPOINTS SOURCE ASSIGNMENT OPTIONS Vacuum channel Value Description Vacuum channel Vacuum channel Vacuum channel Vacuum channel Vacuum channel Vacuum channel Always OFF Always ON Table . : Setpoints source assignment options DIGITAL OUTPUTS ASSIGNMENT OPTIONS Not assigned Value Description Emission passive channel...

  • Page 111: Analogue Outputs Assignment Options

    MULTI GAUGE CONTROLLER COMMUNICATION ANALOGUE OUTPUTS CONTROL SOURCES OPTIONS Not assigned Value Description Pressure of passive channel Pressure of passive channel Pressure of passive channel Pressure of active channel Pressure of active channel Pressure of active channel Pressure of active channel Table .

  • Page 112: Maintance And Service

    MAINTANCE AND SERVICE MULTI GAUGE CONTROLLER MAINTANCE AND SERVICE MAINTANCE The MG does not require any special maintenance work. CLEANING For cleaning of the outside of the device, a slightly moistened cloth will usually do. Do not use any aggressive or abrasive cleaning agents. Components inside of the MG are components at mains voltage.
  • Page 113 MULTI GAUGE CONTROLLER MAINTANCE AND SERVICE In order to update the software/ irmware via USB the USB memory stick must be formatted as FAT / FAT . Then simply copy the update ile received from us to the memory stick and insert into the USB slot on the front of the MG .
  • Page 114 MAINTANCE AND SERVICE MULTI GAUGE CONTROLLER Figure . : USB menu To update the current version to a newer version, select the Firmware Updates option. To accelerate the search for updates on the USB drive, delete all iles except the updates. Figure .
  • Page 115 MULTI GAUGE CONTROLLER MAINTANCE AND SERVICE Figure . : Restart message After selecting to proceed with the update, the device will stop and the updating procedure will be initiated. The update process takes a few minutes during which time the screen below is displayed. Figure .
  • Page 116 MAINTANCE AND SERVICE MULTI GAUGE CONTROLLER Upon successful installation, the message with ”updated” statuses should be displayed. Figure . : Update summary example Select “OK” to reboot the device and inish the upgrade. Page User manual rev.

  • Page 117: Auto Update

    MULTI GAUGE CONTROLLER MAINTANCE AND SERVICE AUTO UPDATE The auto-update feature compares the current version of main-board and bus irmware with soft- ware. In case of any mismatch (for example if the micro SDHC card was swapped) the user will be informed with a blinking exclamation icon.

  • Page 118: Preboot Environment

    MAINTANCE AND SERVICE MULTI GAUGE CONTROLLER PREBOOT ENVIRONMENT To run the Preboot application press on the logo at MG startup ( . ). Figure . : Enter into preboot environment The Preboot Environment is an application to boot the MG .

  • Page 119: Boot Menu

    MULTI GAUGE CONTROLLER MAINTANCE AND SERVICE BOOT MENU Boot menu allows the user set which version of the MG and Preboot Environment will be run after the start of device. In order to switch software version, click on “Software boot version” combo box. Figure .

  • Page 120: Tools Menu

    MAINTANCE AND SERVICE MULTI GAUGE CONTROLLER TOOLS MENU The Tools menu allows the user to run applications such as touch screen or power supply calibra- tion. Figure . : Tools menu In order to select one of the applications, tap the desired application from the tools combo box and tap the Run button.

  • Page 121: Network Tab

    MULTI GAUGE CONTROLLER MAINTANCE AND SERVICE NETWORK TAB From this tab the user can con igure the IP address, netmask and enable / disable DHCP. Figure . : Network tab After tapping on one of the editable ields, the numeric panel for editing values will appear . Input values can be completed by tapping X button in the upper-left corner of the screen.

  • Page 122: Packing

    PACKING Please retain the original packaging. The packaging is required for storing the MG and for ship- ping it to an authorized PREVAC service center. STORAGE The MG should only be stored in a dry room. The following requirements must be met: Ambient temperature °C...

  • Page 123: Dip Switch Addressing

    MULTI GAUGE CONTROLLER APPENDIX APPENDIX DIP SWITCH ADDRESSING ADDRESS DIP SWITCH ON ADDRESS DIP SWITCH ON , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,...

  • Page 124: Dip Switch Addressing

    APPENDIX MULTI GAUGE CONTROLLER continued from previous page , , , ADRES DIP SWITCH ON ADRES DIP SWITCH ON , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Table .

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