Summary of Contents for JOWA PD6088
- Page 1 Instruction Manual Model PD6088 Modbus Digital Display M398 January 3, 2019 JOWA USA, Inc. 59 Porter Road Littleton, MA 01460-1431 USA Tel: 978-486-9800 Fax: 978-486-0170...
- Page 3 ® PD6088/PD6089 Modbus Scanner Instruction Manual Modbus Scanner • Modbus ® RTU Master, Slave, or Snooper Mode • Poll and Display up to 16 Process Variables • Displays in Decimal or Feet & Inches Format • Large 6-Digit Dual-Line Display, Red LEDs, Sunlight Readable •...
- Page 4 ® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Disclaimer The information contained in this document is subject to change without notice. Precision Digital Corporation makes no representations or warranties with respect to the contents hereof; and specifically disclaim any implied warranties of merchantability or fitness for a particular purpose.
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Page 5: Table Of Contents
® PD6080/PD6081 Modbus Scanner Instruction Manual Table of Contents Table of Contents ----------------------------------------- 3 Slave Mode (Slave) ------------------------------- 28 Table of Figures ------------------------------------------- 4 Setting Up the Scanner (setup) ----------------- 29 Introduction ------------------------------------------------- 5 Setting Up the Process Variables (PVs) (pv setup) ------------------------------------------------- 30 Ordering Information ------------------------------------ 6 Setting the Display Decimal Point (disp. -
Page 6: Table Of Figures
Figure 3. Scanner Dimensions - Top View ------ 12 Figure 12. 4-20 mA Output Connections -------- 17 Figure 4. Connector Labeling for Fully Loaded Figure 13. Interlock Connections ------------------ 17 PD6088/6089 ---------------------------------------- 13 Figure 14. Acknowledge Relays with F4 Figure 5. Power Connections ----------------------- 13 Function Key---------------------------------------- 47 Figure 6. -
Page 7: Introduction
Feet & Inches. As a master, the PD6088/6089 reads up to 16 slave devices, scales the data from each, displays the result, and operates the internal relays and 4-20 mA output. The PD6088/6089 in Master mode is capable of polling up to 16 process variables (PVs);... -
Page 8: Ordering Information
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Ordering Information SunBright Display Models 's SunBright display models have an extraordinarily bright LED display. They are perfect for applications where the scanner is in direct sunlight or in applications where visibility may be impaired by smoke, fog, dust, or distance. -
Page 9: Specifications
Master. each PV and math channel Slave Processes data sent to it from a Modbus PV Format PD6088 default: Decimal format RTU master device. PD6089 default: FT & IN, 1/8 or 1/16 Note: The relays and the 4-20 mA outputs decimal format may be selected for line 2 are functional in all modes. -
Page 10: Math Functions
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Math Functions Max/Min Max/min readings are stored until reset by Display the user or when power to the scanner is Name Math Operation (Examples) Setting turned off. User can reset by front panel... -
Page 11: Relays
® PD6080/PD6081 Modbus Scanner Instruction Manual Relays Isolated 4-20 mA Transmitter Output Rating 2 or 4 SPDT (Form C) internal and/or 4 Output Source PV1-16, math channels C1-4, set points SPST (Form A) external; rated 3 A @ 30 1-8, or manual control mode VDC and 125/250 VAC resistive load;... -
Page 12: Compliance Information
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Compliance Information Safety UL & c-UL LISTED USA & Canada UL 508 Industrial Control Equipment UL FILE NUMBER E160849 FRONT PANEL UL Type 4X, NEMA 4X, IP65; panel gasket provided LOW VOLTAGE EN 61010-1:2010... -
Page 13: Safety Information
® PD6080/PD6081 Modbus Scanner Instruction Manual Safety Information Risk of electric shock or personal injury. Hazardous voltages exist Read complete instructions prior to within enclosure. Installation and installation and operation of the service should be performed only scanner. CAUTION: WARNING! by trained service personnel. -
Page 14: Mounting Dimensions
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Mounting Dimensions Figure 2. Scanner Dimensions - Side View Figure 3. Scanner Dimensions - Top View... -
Page 15: Connections
F4 COM DO DO RS-485 Figure 4. Connector Labeling for Fully Loaded PD6088/6089 Power Connections Power connections are made to a two-terminal connector labeled POWER on the back of the scanner. The scanner will operate regardless of DC polarity connection. The + and - symbols are only a suggested wiring convention. -
Page 16: Serial Communications Connection
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Serial Communications Connection Serial communications connection is made to an RJ45 connector labeled M-LINK on the back of the scanner. The Modbus Scanner uses the PDA1485 RS-485 adapter to interface with other Modbus devices and the PDA8485 RS-485 to USB converter or PDA7485 RS-232 to RS-485 converter to connect to a PC. -
Page 17: Serial Communications Connections Table
® PD6080/PD6081 Modbus Scanner Instruction Manual Serial Communications Connections Table The table below shows the terminal connections for 3-wire RS-485 devices. PD6088/6089 PD6088/6089 Modbus Modbus Master Snooper Connection Slave Meter Level Gauge PDA1485 PDA1485 PDA8485 RS-485 RS-485 RS-485 Adapter RS-485 Adapter... -
Page 18: Relay Connections
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Relay Connections Relay connections are made to two six-terminal connectors labeled RELAY1 – RELAY4 on the back of the scanner. Each relay’s C terminal is common only to the normally open (NO) and normally closed (NC) contacts of the corresponding relay. -
Page 19: 4-20 Ma Output Connections
® PD6080/PD6081 Modbus Scanner Instruction Manual 4-20 mA Output Connections Connections for the 4-20 mA transmitter output are made to the connector terminals labeled MA OUT. The 4-20 mA output may be powered internally or from an external power supply. 24 V 24 V MA OUT... -
Page 20: Setup And Programming
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Setup and Programming Overview There are no jumpers involved in the scanner setup procedure. Setup and programming is done using ScanView software or through the front panel buttons. After power and signal connections have been completed and verified, apply power to the scanner. -
Page 21: Display Functions & Messages
® PD6080/PD6081 Modbus Scanner Instruction Manual Display Functions & Messages The following table shows the main menu functions and messages in the order they appear in the menu. Display Parameter Action/Setting Display Parameter Action/Setting Description Description t-resp mode Response Time Enter the time allowed for a Mode Enter Mode menu slave device to respond to a... - Page 22 ® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Display Parameter Action/Setting Display Parameter Action/Setting Description Description 1234 Byte Order Select big-endian byte order. units Units Units 4321 Byte Order Select little-endian byte formt Format Format (Decimal, Eighths, or order. Sixteenths of an Inch)
- Page 23 ® PD6080/PD6081 Modbus Scanner Instruction Manual Display Parameter Action/Setting Display Parameter Action/Setting Description Description D tag. u Display Tag & Display Tag & Units Relay goes to non-alarm condition when break Units detected. Relay turns off D off Display off Display Off when Communications Break detected.
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Page 24: Scanview Software
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual ScanView Software The meter can also be programmed using the PC-based ScanView software included with the meter. This software is can be installed on any Microsoft® Windows® (XP/Vista/7/8/10) computer by connecting to the meter’s onboard USB. The meter is powered by the USB connection, so there is no need to wire anything prior to programming the meter, though USB is intended only for meter configuration. -
Page 25: Menu Navigation Tip
® PD6080/PD6081 Modbus Scanner Instruction Manual Menu Navigation Tip • The Up arrow scrolls through the sub-menus within a menu, after the last item it returns to the top menu. Press Enter to step into the menu again or press Up arrow to move to the next menu. Note: There are some exceptions (e.g. -
Page 26: Serial Communications (Serial)
3. When using the M-Link to connect to a Modbus network, the PD6088/PD6089 cannot be used as a Master, but can be used as a Snooper or as a Slave. In order to use the PD6088/PD6089 as a Master, the scanner must connect to the Modbus Network via the three-wire terminal connector on... -
Page 27: Scanner Mode Selection
® PD6080/PD6081 Modbus Scanner Instruction Manual Scanner Mode Selection Operating Modes (nmode) The Mode menu is used to select how the scanner is to function: 1. Master: Reads a slave device, scales the data from it, displays the result, and operates the relays and 4-20 mA output. -
Page 28: Master Mode (Nmastr)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Master Mode (nmastr) The Master mode contains the PV Number, Poll Time, and Response Timeout menus. PV Number: Enable/disable PVs, select slave ID, function code, register number, data type & byte order. Poll Time: Enter the time interval to poll the slave devices selected. -
Page 29: Snooper Mode (Snoopr)
® PD6080/PD6081 Modbus Scanner Instruction Manual Snooper Mode (Snoopr) The Snooper mode is used to listen to data being transmitted on the bus. Multiple Snoopers can be connected to the RS-485 bus and display any process variable. The same process variable can be displayed in multiple locations. -
Page 30: How To Select 5 Or 6-Digit Registers
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual How to Select 5 or 6-Digit Registers In Master or Snooper Mode, it is possible to select either a five-digit or a six-digit Register Number. Once the operator has enabled a PV, entered a Slave ID, and chosen a Function Code, the scanner will arrive at the Register Number menu (reg. -
Page 31: Setting Up The Scanner (Setup)
® PD6080/PD6081 Modbus Scanner Instruction Manual Setting Up the Scanner (setup) The Setup menu is used to select: 1. PV Setup a. PV Tags b. PV Units c. Format: Decimal point or Feet & Inches d. Decimal Point e. Scale input data 2. -
Page 32: Setting Up The Process Variables (Pvs) (Pv Setup)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Setting Up the Process Variables (PVs) (pv setup) Enter the PV Setup menu to set up all the criteria associated with each enabled PV. Once you have selected the desired PV, you can select parameters for each. These include tag, units, format, display decimal point, float decimal point (resolution), and scaling of the input data. -
Page 33: Scaling The Pv Display Values (Scale)
® PD6080/PD6081 Modbus Scanner Instruction Manual Scaling the PV Display Values (sCale) The data that the scanner receives can be scaled to display in engineering units. Input 1 must be less than Input 2; Input 2 must be less than Input 3; etc (known as monotonic values). Press Enter to save the changes or Menu to exit without saving. -
Page 34: Setting Up The Displays (Dsplay Setup)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Setting Up the Displays (dsplay setup) Line 1 Parameters (Line 1 dsplay) The top display (Line 1) can be programmed to display any of the following: Display Parameter Setting Description D pv Display PV... -
Page 35: Display Line 1 Menu (Line 1 Dsplay)
® PD6080/PD6081 Modbus Scanner Instruction Manual Display Line 1 Menu (Line 1 dsplay) Line 2 Setup continues from here. Continues to Relay Setup. Continues to Line 2 Setup. Continues to Line 2 Setup. Continues to Line 2 Setup. Note: For Tag-PVn and Tag-PVn-U, the default settings for PVs are 1,3,5,&7, followed by two underscores, which represent empty PVs. -
Page 36: Display Line 2 Menu (Line 2 Dsplay)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Display Line 2 Menu (Line 2 dsplay) Continues to Display Intensity Setup. Continues to Display Intensity Setup. Continues to Display Intensity Setup. Continues to Display Intensity Setup. Note: For Tag-PVn and Tag-PVn-U, the default settings for PVs are 2,4,6,& 8, followed by two... -
Page 37: Setting The Tags (Tag) & Units (Units)
In this application we have a system consisting of (4) MTS M-Series multivariable tank level gauges connected to (2) PD6088 displaying Product Level, Interface Level, and Average Temperature. One of the Modbus Scanners is located next to the tanks and the other is located in the control room. - Page 38 ® PD6088/PD6089 Modbus Scanner Meter Instruction Manual The following table shows the system setup for the MTS M-Series gauge, one PD6088 Master, and one PD6088 Snooper: Parameter PD6088 PD6088 Description/Comment Master Snooper Mode Master Snooper PV1 Slave ID Function Code...
- Page 39 ® PD6080/PD6081 Modbus Scanner Instruction Manual Parameter PD6088 PD6088 Description/Comment Master Snooper Long integer Data Type Long Binary, Signed Byte Order 1234 1234 PV10 Slave ID Function Code Register PV10 30001 30001 Tank 4 Product Level Data Type Long integer...
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Page 40: Application Example 2
30001 - Product Level 30003 - Interface Level 30017 - Average Temperature Note: The example above shows the PD6088. The setup of the scanner is the same as the first example. The PD6089’s Feet & Inches display is clearly visible. -
Page 41: Setting The Relay Operation (Relay)
® PD6080/PD6081 Modbus Scanner Instruction Manual Setting the Relay Operation (relay) This menu is used to set up the assignment and operation of the relays. Relay Setup Menu (relay setup) Up Arrow cycles through all available relays. Up Arrow cycles through all enabled PVs and multiple PVs. -
Page 42: Setting The Relay Action (Act 1)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Setting the Relay Action (act 1) Operation of the relays is Use Up Arrow relay 1 relay 1 to scroll through programmed in the Action menu. the menu relay relay The relays may be set up for any of choices below. -
Page 43: Relay Action For Communications Break (Break)
® PD6080/PD6081 Modbus Scanner Instruction Manual Relay Action for Communications Break (break) The Scanner will poll the slave device three times before reporting a communications break condition. After the third failure, the Response Timeout timer starts and will determine the actual time to report a PV in break condition. -
Page 44: High Alarm With Fail-Safe Operation (Set > Reset)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual High Alarm with Fail-Safe Operation Low Alarm with Fail-Safe Operation (Set > Reset) (Set < Reset) Note: Relay coil is energized in non-alarm Note: Relay coil is energized in non-alarm condition. In case of power failure, relay condition. -
Page 45: Relay Sampling Operation
® PD6080/PD6081 Modbus Scanner Instruction Manual Relay Sampling Operation Input Reset Sample Sample Sample Time Time Time Relay When the signal crosses the set point, the relay trips and the sample time starts. After the sample time has elapsed, the relay resets. The cycle repeats every time the set point is crossed, going up for high alarms and going down for low alarms. -
Page 46: Time Delay Operation
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Time Delay Operation The following graphs show the operation of the time delay function. When the signal crosses the set point, the On time delay timer starts and the relay trips when the time delay has elapsed. -
Page 47: Relay Operation Details
® PD6080/PD6081 Modbus Scanner Instruction Manual Relay Operation Details Overview The relay capabilities of the scanner expand its usefulness beyond simple indication to provide users with alarm and control functions. These capabilities include front panel alarm status LEDs, as well as either 2 or 4 optional internal relays, and/or 4 external relays via expansion modules. -
Page 48: Latching And Non-Latching Relay Operation
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Latching and Non-Latching Relay Operation The relays can be set up for latching (manual reset) or Relay terminology for following tables non-latching (automatic reset) operation. Terminology Relay Condition Alarm (Tripped) The On and Off terminology does not refer to the status of Normal (Reset) the relay’s coil, which depends on the fail-safe mode... -
Page 49: Acknowledging Relays
® PD6080/PD6081 Modbus Scanner Instruction Manual Acknowledging Relays There are two ways to acknowledge relays programmed for manual reset: 1. Via the programmable F4 digital input assigned to ACK (Default) and connected to a normally open pushbutton wired across F4 and COM. 2. -
Page 50: Setting Up The Interlock Relay (Force On) Feature
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Setting Up the Interlock Relay (Force On) Feature Relays 1-4 can be set up as interlock relays. To set up the relays for the interlock feature: 1. Access the Setup – Relay – Action menu and set the action to off. -
Page 51: Scaling The 4-20 Ma Analog Output (Aout)
® PD6080/PD6081 Modbus Scanner Instruction Manual Scaling the 4-20 mA Analog Output (Aout) The 4-20 mA analog outputs can be scaled to provide a 4-20 mA signal for any display range selected. The Analog Outputs can be mapped to PVs or Math Channels. To select the channel and source assignments the analog outputs are assigned to, see Analog Output Source Programming on page 64. -
Page 52: Protecting Or Locking The Scanner
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Pass 1: Allows use of function keys and digital inputs Pass 2: Allows use of function keys, digital inputs and editing set/reset points Pass 3: Restricts all programming, function keys, and digital inputs. -
Page 53: Advanced Features Menu
® PD6080/PD6081 Modbus Scanner Instruction Manual Advanced Features Menu To simplify the setup process, functions not needed for most applications are located in the Advanced Features menu: 1. Scan Mode: Auto or manual; Go on alarm or stop on alarm 2. -
Page 54: Advanced Features Menu & Display Messages
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Advanced Features Menu & Display Messages Display Parameter Action/Setting Display Parameter Action/Setting No pts sCan Number of Enter Number of Scan Enter Scan menu Points Linearization Points mode Scan Mode Select Auto or Manual... - Page 55 ® PD6080/PD6081 Modbus Scanner Instruction Manual Display Parameter Action/Setting Display Parameter Action/Setting Concen prev Concentration Math Function Previous Previous PV Concentration next Next Next PV math2 Math2 Resultant Math Channel SCAn Scan Scan or pause scan Math operation applied to other math channels Acknowledge Acknowledge relays (e.g.
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Page 56: Scan Function (Scan)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Scan Function (SCan) The Scan menu is used to program the PV scan mode and the scanner’s behavior on alarm condition. The operator is able to scan automatically based on a time parameter, or scan manually with front panel keys or digital inputs. -
Page 57: Noise Filter (Filter)
® PD6080/PD6081 Modbus Scanner Instruction Manual Noise Filter (filter) Most applications do not require changing this parameter. It is intended to help attain a steady display with unsteady (noisy) input data. The field selectable noise filter averages any minor or quick changes in the input data and displays the reading with greater stability. - Page 58 ® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Input Data Conditioning Function Menu (Functn) The Function menu is used to select the input-to-output transfer function applied to the input data: linear, square root, programmable exponent, or round horizontal tank volume calculation. Multi-point linearization (for PV1 and PV2) is part of the linear function selection.
- Page 59 ® PD6080/PD6081 Modbus Scanner Instruction Manual Square Root Function Menu (Square) The square root function is used to calculate flow measured with a differential pressure transmitter. The flow rate is proportional to the square root of the differential pressure. Scale the scanner so that the low input signal (e.g.
- Page 60 ® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Round Horizontal Tank Function Menu (rht) This function is used to calculate volume in a round horizontal tank with flat ends. The volume is calculated based on the diameter and length of the tank. The tank’s dimensions can be entered in inches or centimeters;...
- Page 61 ® PD6080/PD6081 Modbus Scanner Instruction Manual Math Functions (math) The Math menu is used to select the math function that will determine the channels C1-C4 value. These math functions are applied to PVs and other math channels. The results are displayed by selecting Display Channel C (d Ch C) in the Display menu.
- Page 62 ® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Math Function Menu (math) Main Math Channels: Each PV is represented by an underscore. There are 6 lines shown and ten lines hidden. Enter any or all PVs without leaving a space. Any spaces will signal the meter to end the equation there.
- Page 63 ® PD6080/PD6081 Modbus Scanner Instruction Manual Sum Menu (sunm) Difference Menu (dif) Difference Absolute Menu (difAbS) Average Menu (avg) Multiplication Menu (nmulti) Divide Menu (divide) Only two PVs at a time will be used for this function.
- Page 64 ® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Maximum PV Menu (Hi-pv) Minimum PV Menu (Lo-pv) Draw Menu (drauw) Weighted Average Menu (uwAvg) Only two PVs at a time will be used for this Only two PVs at a time will be used for this function.
- Page 65 ® PD6080/PD6081 Modbus Scanner Instruction Manual Low-Flow Cutoff (CutofF) The low-flow cutoff feature allows the scanner to be programmed so that the often unsteady output from a differential pressure transmitter, at low flow rates, always displays zero on the scanner. The cutoff value may be programmed from 0 to 999999.
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Page 66: Analog Output Source Programming (Aoutpr)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Analog Output Source Programming (aoutpr) The 4-20 mA analog outputs can be programmed for source of data, overrange and underrange, absolute maximum and minimum output, and communications break values. They can also be recalibrated. -
Page 67: User Menu (User)
® PD6080/PD6081 Modbus Scanner Instruction Manual User Menu (user) The User menu allows the user to assign the front panel function keys F1, F2, and F3, the digital input F4 (a digital input located on the signal input connector), and up to eight additional digital inputs to access most of the menus or to activate certain functions immediately (e.g. -
Page 68: Digital Input Menu (Di 1)
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Digital Input Menu (dI 1) If installed, there are up to 8 digital inputs and outputs. There are up to eight Set Points available. Digital Output Menu (dO 1) If installed, there are up to 8 digital inputs and outputs. -
Page 69: 4-20 Ma Output Calibration
(AoutPr)/Calibration (Calib) menu and press Enter. 4. The display will show 4 nmA. The PD6088/6089 mA output should now be close to 4 mA. Press Enter and the display will show 04.000. Enter the actual value read by the digital mA meter and press Enter. -
Page 70: Troubleshooting
® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Troubleshooting Due to the many features and functions of the scanner, it’s possible that the setup of the scanner does not agree with what an operator expects to see. If the scanner is not working as expected, refer to the recommendations below. -
Page 71: Diagnostics Menu (Diag)
Enter the Diagnostic menu and press the ENTER button to get to the LED Test menu (led t). Press the ENTER button to activate the LED Test. The PD6088/6089 will cycle through all digits, decimal points, and relay indicators to enable the operator to see that all are functioning properly. Press the ENTER button again to access the Information menu (info). -
Page 72: Scanner Operation
Scanner Meter Instruction Manual Scanner Operation The PD6088/6089 scanner is capable of operating as a Modbus Master, Slave or Snooper. As a Slave, the PD6088/6089 requires connection to a Master device: PLC, DCS, etc. As a Master, the PD6088/6089 interfaces up to sixteen slave devices and can alternately display their Process Variables. As a Snooper it can be connected anywhere in the RS-485 bus to read any of the variables being requested by the Master device. -
Page 73: Factory Defaults & User Settings
® PD6080/PD6081 Modbus Scanner Instruction Manual Factory Defaults & User Settings The following table shows the factory setting for most of the programmable parameters on the PD6088 scanner. Parameter Display Default Setting Parameter Display Default Setting mode Math, channel Mode... - Page 74 ® PD6088/PD6089 Modbus Scanner Meter Instruction Manual Parameter Display Default Setting Parameter Display Default Setting Pv 4 Dis 2 Relay 4 PV 4 Display 2 analog 20.000 assignment Act 4 Out 2 Relay 4 action Automatic Output 2 value 20.000 mA...
- Page 75 How to Contact JOWA USA, Inc. • For Technical Support please Call: +19784869800 or (800) 861-1560 Fax: (978) 486-0170 Email: service@JOWA-USA.com • For Sales Support or to place an order please Call: +19784869800 or (800) 861-1560 Fax: (978) 486-0170 Email: sales@JOWA-USA.com •...
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