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Gemotech RemoDAQ-9X20 Series User Manual

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V1.2 2009-2-26
RemoDAQ-9X20 Series
(Distributed DA&C System Based on Ethernet)
User's Manual
Beijing Gemotech Intelligent Technology Co.，Ltd

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  • Page 1 V1.2 2009-2-26 RemoDAQ-9X20 Series (Distributed DA&C System Based on Ethernet) User’s Manual Beijing Gemotech Intelligent Technology Co.，Ltd...

  • Page 2: Table Of Contents

    RemoDAQ-9X20 Series User’s Manual Table of Contents 1 Understanding Your System ..............3 1.1 Introduction ................... 3 1.2 Major Features ................4 1.2.1 Communication Network............. 4 1.2.2 Modbus/TCP Protocol............. 5 1.2.3 Hardware Capacity & Diagnostic ........6 1.2.4 Communicating Isolation............. 7 1.2.5 Built-in real-time OS and watchdog timer ......
  • Page 3 RemoDAQ-9X20 Series User’s Manual 3.3 Wiring and Connections............35 3.3.1 Power supply wiring............36 3.3.2 I/O modules wiring ............. 37 3.3.3 System Network Connections..........39 3.4 Assigning address for I/O Modules ........42 4 I/O Modules ..................43 5 System Hardware Configuration ..........45 5.1 System Hardware Configuration..........

  • Page 4: Understanding Your System

    People usually had to prepare a data exchange server between information systems and control systems as a communication bridge. Obviously, it takes a lot of time and money. To meet user’s requirements, GEMOTECH announces the new DA&C system, the RemoDAQ-9X20, the Ethernet I/O solution...

  • Page 5: Major Features

    RemoDAQ-9X20 Series User’s Manual Figure 1.1:Apply to System Application 1.2 Major Features 1.2.1 Communication Network adopting 32-bit RISC CPU, RemoDAQ-9X20 greatly advanced data processing abilities for the user, especially for network communications (response time < 5ms). There is a...

  • Page 6: Modbus/Tcp Protocol

    RemoDAQ-9X20 Series User’s Manual standard RJ-45 modular jack Ethernet port on the RemoDAQ-9X20’S CPU board, and I/O modules field signals would be able to link with the Ethernet directly without assistance from other hardware devices such as converters or data gateways. The communication speeds can be auto-switched between 10 M and 100 Mbps data transfer rate depending upon the network environment.

  • Page 7: Hardware Capacity & Diagnostic

    LAN, Intranet, or Internet. 1.2.3 Hardware Capacity & Diagnostic GEMOTECH’s RemoDAQ-9X20 is designed with a high I/O capacity and supports all types of RemoDAQ-9000 I/O modules. Providing eight slots for any mixed modules, this DA&C system handles up to 128 I/O points (four...

  • Page 8: Communicating Isolation

    RemoDAQ-9X20 Series User’s Manual and more. In addition, there are also Tx and Rx LEDs on the Ethernet port, indicating data transfer and reception. 1.2.4 Communicating Isolation High-speed transient suppressors isolate RemoDAQ-9X20 Ethernet port from dangerous voltage up to 1500V DC power spikes and avoid surge damage to whole system.

  • Page 9: Software Support

    RemoDAQ-9X20 Series User’s Manual ideal for use in applications that require a high level of system performance and stability. 1.2.6 Software Support Based on the Modbus standard, you can use socket network programming method to develop your own applications. 1.2.7 Security Setting...

  • Page 10: Udp Data Stream

    RemoDAQ-9X20 Series User’s Manual 1.2.8 UDP Data Stream Most of time, each host PC in a DA&C system needs to regularly request the I/O devices via TCP/IP packs to update current data. It may cause to data collision and lower...

  • Page 11: Technical Specification Of Remodaq-9X20 System

    RemoDAQ-9X20 Series User’s Manual Maximum 32 Modbus/RTU nodes or 3’rd party products that supported Modbus protocol are allowed to integrate with an RemoDAQ-9X20. This great feature enlarges your system scope, as opposed to other general dummy I/O system. 1.3 Technical specification of RemoDAQ-9X20 System 1.3.1 System...

  • Page 12: Ethernet Communication

    RemoDAQ-9X20 Series User’s Manual 1.3.2 Ethernet Communication • Ethernet: 10 BASE-T IEEE 802.3 100 BASE-TX IEEE 802.3u • Wiring: UTP, category 5 or greater • Bus Connection: RJ45 modular jack • Comm. Protocol: Modbus/TCP • Data Transfer Rate: Up to 100 Mbps •...

  • Page 13: Power

    RemoDAQ-9X20 Series User’s Manual • Max. Transmission Distance: 4000 feet (1220 m) 1.3.4 Power • Unregulated 10 to 30V DC • Protection: Over-voltage and power reversal 1.3.5 Isolation • Ethernet Communication: 1500 V DC • I/O Module: 3000 V DC 1.3.6 Environment...

  • Page 14: Dimensions

    RemoDAQ-9X20 Series User’s Manual more frequently at lower humidity levels. Make sure you take adequate precautions when you touch the equipment. Consider using ground straps, anti-static floor coverings, etc. if you use the equipment in low humidity environments. 1.3.7 Dimensions The following diagrams show the dimensions of the system unit and an I/O unit.

  • Page 15: Basic Function Block Diagram

    RemoDAQ-9X20 Series User’s Manual 1.3.8 Basic Function Block Diagram Figure 1-3: Function block diagram 1.4 LED Status of RemoDAQ-9X20 main unit There are eight LEDs on the RemoDAQ-9X20 front panel. The LEDs indicate RemoDAQ-9X20’s system status, as explained below:...
  • Page 16 RemoDAQ-9X20 Series User’s Manual Figure 1-4: RemoDAQ-9X20 LED Indicators (1) 3.3V: Red indicator. This LED is normal on when ARM CPU is powered on. (2) 5V: Red indicator. This LED is normal on when RemoDAQ-9X20 system is powered on. (3) Run: Green indicator. This LED is regularly blinks whenever the RemoDAQ-9X20 system is running.

  • Page 17: ２Choose Hardware Components

    RemoDAQ-9X20 Series User’s Manual spare function (COM port receive indicator) in the future. (7) Collide: Green indicator. This LED blinks whenever there is the Ethernet data pack collision. (8) Speed: Green indicator. This LED is on when the Ethernet communication speed is 100 Mbps.
  • Page 18 RemoDAQ-9X20 Series User’s Manual considered when you select the I/O modules. What type of I/O signal is applied in your system? How much I/O is required to your system? How will you place the main unit for concentrate the I/O points of an entire process.
  • Page 19 RemoDAQ-9X20 Series User’s Manual Discrete input Selector switches, Input modules sense module and block pushbuttons, photoelectric ON/OFF or I/O module eyes, limit switches, circuit OPENED/CLOSED breakers, proximity signals. Discrete switches, level switches, signals can be either motor starter contacts, ac or dc.
  • Page 20 RemoDAQ-9X20 Series User’s Manual transducers, humidity transducers, flow transducers, potentiometers. Analog output Analog valves, actuators, Interpret module chart recorders, electric RemoDAQ-9X20 output motor drives, analog to analog signals meters (generally through transducers) for field devices. Table 2-1: I/O Selection Guidelines...
  • Page 21 RemoDAQ-9X20 Series User’s Manual Figure 2-1: RemoDAQ-9000 I/O Module Selection Chart...
  • Page 22 RemoDAQ-9X20 Series User’s Manual...
  • Page 23 RemoDAQ-9X20 Series User’s Manual...

  • Page 24: Selecting Power Supply

    RemoDAQ-9X20 Series User’s Manual 2.2 Selecting Power Supply RemoDAQ-9X20 system works under unregulated power source between +10 and +30 VDC. When you arrange different I/O modules on RemoDAQ-9X20’s back plant, it may require comparable power supply. Use the following steps as guidelines for selecting a power supply for your RemoDAQ-9X20 system.
  • Page 25 RemoDAQ-9X20 Series User’s Manual Backup) 9821 5.0W PC-Based Programmable Controller With Modbus Description Power Module Consu- mption 9013 1.1W 3-Channel RTD Input Module 9017 1.25W 8-Channel Analog Input Module (mV, mA or High Voltage) 9017H 2.2W 8-Channel High speed Analog Input Module (mV, mA or...
  • Page 26 RemoDAQ-9X20 Series User’s Manual 9056D 0.84W 16-Channel Digital Input W/LED Module 9056S 0.6W 16-Channel Isolated Digital Input W/LED Module 9060 1.8W 6-Channel Relay Output Module (2 of Form A, 4 of Form 9068 1.8W 8-Channel Relay Output Module (8 of Form A) 9069 2.2W...

  • Page 27: Selecting Link Terminal And Cable

    RemoDAQ-9X20 Series User’s Manual 2.3 Selecting Link Terminal and Cable Ethernet Network Use the RJ-45 connector to connect the Ethernet port of the RemoDAQ-9X20 to the Hub. The cable for connection should be Category 3 (for 10Mbps data rate) or Category 5 (for 100Mbps data rate) UTP/STP cable, which is compliant with EIA/TIA 586 specifications.
  • Page 28 RemoDAQ-9X20 Series User’s Manual Figure 2-2: Ethernet Terminal and Cable Connection Pin number Signal Function Receive（+） Receive（-） Transmit（+） (Not Used) （Not Used） Transmit（-） (Not Used) (Not Used) Table 2-5: Ethernet RJ-45 port Pin Assignment Serial Network The system uses screw terminal for RS-485 twisted pair connection as a data gateway between Ethernet Sever and serial Modbus devices.
  • Page 29 RemoDAQ-9X20 Series User’s Manual wires to attain needed length. 3. Use the shortest possible wire length. 4. Use the wire trays for routing where possible. 5. Avoid running wires near high-energy wiring. 6. To reduce electrical noise, it should be twisted as tightly...

  • Page 30: Selecting Operator Interface

    Modbus/TCP Protocol, RemoDAQ-9X20 exhibits high ability in system integration for various applications. If you want to configure your RemoDAQ-9X20 system, or monitor current status, GEMOTECH offers free charge software: þ RemoDAQ-9X20 Windows Utility. If you want to integrate RemoDAQ-9X20 with HMI...

  • Page 31: Hardware Installation Guide

    RemoDAQ-9X20 Series User’s Manual 3 Hardware Installation Guide 3.1 Installing your main unit and module When inserting modules into the system, align the PC board of the module with the grooves on the top and bottom of the system. Push the module straight into the system until it is firmly seated in the back plane connector (see figure 3-1).
  • Page 32 RemoDAQ-9X20 Series User’s Manual Figure 3-1: Module alignment and installation...

  • Page 33: Mounting

    RemoDAQ-9X20 Series User’s Manual Figure 3-2: Secure the module to the system 3.2 Mounting The RemoDAQ-9X20 system can be installed on a panel or on a DIN rail. 3.2.1 Panel mounting Mount the system on the panel horizontally to provide...

  • Page 34: Din Rail Mounting

    RemoDAQ-9X20 Series User’s Manual upside down or on a flat horizontal surface. A standard #7 tatting screw (4 mm diameter) should be used. Figure 3-3: RemoDAQ-9X20 panel mounting screw placement 3.2.2 DIN rail mounting The system can also be secured to the cabinet...
  • Page 35 RemoDAQ-9X20 Series User’s Manual by using mounting rails (see figure 3-4). If you mount the system on a rail, you should also consider using end brackets at each end of the rail. The end brackets help keep the system from sliding horizontally along the rail. This inimizes the possibility of accidentally pulling the wiring loose.

  • Page 36: Wiring And Connections

    RemoDAQ-9X20 Series User’s Manual Figure 3-5: Secure RemoDAQ-9X20 System to a DIN rail 3.3 Wiring and Connections This section provides basic information on wiring the power supply, I/O units, and network connection.

  • Page 37: Power Supply Wiring

    RemoDAQ-9X20 Series User’s Manual 3.3.1 Power supply wiring Although the RemoDAQ-9X20 systems are designed for a standard industrial unregulated 24 VDC power supply, they accept any power unit that supplies within the range of +10 to +30 VDC. The power supply ripple must be limited to 200 mV peak-to-peak, and the immediate ripple voltage should be maintained between +10 and +30 VDC.

  • Page 38: I/O Modules Wiring

    RemoDAQ-9X20 Series User’s Manual Figure 3.6：RemoDAQ-9X20 power wiring 3.3.2 I/O modules wiring The system uses a plug-in screw terminal block for the interface between I/O modules and field devices. The following information must be considered when connecting electrical devices to I/O modules.
  • Page 39 RemoDAQ-9X20 Series User’s Manual 2. Always use a continuous length of wire. Do not combine wires to make them longer. 3. Use the shortest possible wire length. 4. Use wire trays for routing where possible. 5. Avoid running wires near high-energy wiring.

  • Page 40: System Network Connections

    RemoDAQ-9X20 Series User’s Manual Figure 3-7: RemoDAQ-9X20 I/O Module Terminal Block wiring 3.3.3 System Network Connections Ethnet Network...
  • Page 41 RemoDAQ-9X20 Series User’s Manual The RemoDAQ-9X20 has an Ethernet communication port allowed you to program, configure, monitor, and integrate into the SCADA system. The figure 3-8 is a guideline to complete the system network connection. Figure 3-8: System network connection...
  • Page 42 RemoDAQ-9X20 Series User’s Manual standard protocol, it solves the communication problem between different networks and different devices. Mean- while, users can extend their system scope by integrating up to 32 nodes of RemoDAQ-9821 or other Modbus products, such as meters, card readers, loadcell, and so on.

  • Page 43: Assigning Address For I/O Modules

    RemoDAQ-9X20 Series User’s Manual 3.4 Assigning address for I/O Modules Basing on Modbus standard, the addresses of the I/O modules you place into the RemoDAQ-9X20 system are defined by a simple rule. Please refer the figures 3-9 to map the I/O address.

  • Page 44: O Modules

    RemoDAQ-9X20 Series User’s Manual AO Module) in slot 2, the address of this module should be 40017~40020. Note: RemoDAQ-9080 is a special 4-channel counter module. The data type is designed as “unsigned long”. When you insert a RemoDAQ-9080 in slot 0, the address should be 40001, 40003, 40005 and 40007.
  • Page 45 RemoDAQ-9X20 Series User’s Manual user’s choice. More support list we provided detailed specification user’s guides, please refer user’s manual RemoDAQ-9000 IO Module. It had integrated and collected this information. Module Name Specification Note Analog I/O RemoDAQ-9033 3-ch. RTD Isolated input RemoDAQ-9017 8-ch.

  • Page 46: System Hardware Configuration

    RemoDAQ-9X20 Series User’s Manual RemoDAQ-9052 8-ch. DI Isolated RemoDAQ-9056 16-ch. DO Non-isolated RemoDAQ-9056D 16-ch. Non-isolated W/LED Relay RemoDAQ-9060 6-ch. Relay Isolated Output Output RemoDAQ-9068 8-ch. Relay Isolated Output Counter/ RemoDAQ-9080 4-ch. Isolated Frenquency Counter/ Frequency Serial I/O RemoDAQ-9090 4-port Non-isolated...

  • Page 47: System Hardware Configuration

    RemoDAQ-9X20 Series User’s Manual 5.1 System Hardware Configuration As we mentioned in chapter 3-1, you will need following items to complete your system hardware configuration. System Requirement • Host computer - IBM PC compatible computer with PentiumⅢ CPU above - Microsoft 2000/NT 4.0 (SP3 or SP4) or higher...

  • Page 48: Install Utility Software On Host Pc

    RemoDAQ-9X20 Series User’s Manual • Power supply for RemoDAQ-9X20 (+10~+30 V unregulated) Make sure to prepare all of the items above, then connect the power and network wiring as figure 5-1. Figure 5-1: Hardware Configuration 5.2 Install Utility Software on Host PC...

  • Page 49: Main Menu

    RemoDAQ-9X20 Series User’s Manual your DA&C System. The following guidelines will give you some brief instructions on how to use this Utility. • Main Menu • Ethernet Network Setting • Adding Remote Station • I/O Module Configuration • Alarm Setting •...
  • Page 50 RemoDAQ-9X20 Series User’s Manual Figure 5-2: operation Screen The top of the operation screen consists of a function menu and a tool bar for user’s commonly operating functions. Function menu Item File contents “Exit” Function, using to exit this Utility program.
  • Page 51 RemoDAQ-9X20 Series User’s Manual Item Tool contents functions as below: Add Remote 5000/TCP : Create a new RemoDAQ-9X20 located in other Ethernet domination, both available to local LAN and Internet application. Search for 5000/TCP: Search all RemoDAQ-9X20 units in the specific Ethernet domination.
  • Page 52 RemoDAQ-9X20 Series User’s Manual Item Help contents information about software version, released date etc. Tool Bar There are four push buttons in the tool bar. First is device search. Second is single step debug. Third is Ping connection test. Fourth is about.

  • Page 53: Ethernet Network Setting

    RemoDAQ-9X20 Series User’s Manual 5.3.2 Ethernet Network Setting As the moment you start up this Windows Utility, it will search all RemoDAQ-9X20 on the host PC’s domination Ethernet network automatically. Then the tree-structure display area will appeal with the searched units and the relative IP address.
  • Page 54 RemoDAQ-9X20 Series User’s Manual the status display area, include host name and IP address. Moreover, the Windows Utility provides network connection test tool for user to verify whether the communication is workable. Key-in the specific IP address you want to connect and click the PING button, the testing result will show as Figure 5-5.
  • Page 55 RemoDAQ-9X20 Series User’s Manual station individually with following steps. Step1: Click the Network tip to configure the TCP/IP network setting. Figure 5-7: TCP/IP Network setting This is also called Ethernet address and MAC Address： needs no further configuration. IP Address，Subnet Mask，Default Gateway：...

  • Page 56: I/O Module Canfiguration

    RemoDAQ-9X20 Series User’s Manual device on the global network. Each RemoDAQ-9X20 has same default IP address 10.0.0.1. Therefore, please do not initial many RemoDAQ-9X20 at the same time to avoid the Ethernet collision. If you want to configure the RemoDAQ-9X20 in the host PC’s dominating network, only the IP address and...
  • Page 57 RemoDAQ-9X20 Series User’s Manual user can read following information from the Utility. Figure 5-9: Digital I/O Module Configuration Location: Standard Modbus address. Windows Utility shows the Modbus mapping address of each I/O channel. (Please refer to chapter 3-5 Assigning address for I/O Modules.) And the addresses will be the indexes for applying...
  • Page 58 RemoDAQ-9X20 Series User’s Manual Value: The current status on each channel of I/O Module. The value of digital I/O modules could be “0” (OFF) or “1” (ON). Description: Describes the channel numbers and I/O types of the specific module. In addition to monitor the current DI/DO status, the Windows Utility offers a graphical operating interface as figure 5-10.
  • Page 59 RemoDAQ-9X20 Series User’s Manual Figure 5-10: Operating and Indicating Icons 1. The indicator icons are only available to click Note： for digital output channel. 2. The hexadecimal code will be calculated automatically for any status. Analog Input Module...
  • Page 60 RemoDAQ-9X20 Series User’s Manual Selecting RemoDAQ-9000 Analog Input Modules includes RemoDAQ-9033/9017(H)/9018s, users can read following information from the Utility. Figure 5-11: Current Analog Input Status Location: Standard Modbus address. (Refer to chapter 3-5 Assigning address for I/O module) Type: Data type of the I/O channel. The data type of analog Input modules is always “word”.
  • Page 61 RemoDAQ-9X20 Series User’s Manual values used for different applications. Description: Describes the channel numbers, sensor types, and measurement range of the specified module. Before acquiring the current data of an analog input module, you have to select the input range and integration time.
  • Page 62 RemoDAQ-9X20 Series User’s Manual output value setting in the Utility. Once the setting value sends out, the system will read back the value immediately to guarantee a correct analog output signal. Figure 5-13: Analog Module Configuration Screen Initial Setting function: Note：...

  • Page 63: Alarm Setting

    RemoDAQ-9X20 Series User’s Manual 5.3.4 Alarm Setting satisfy needs various applications, RemoDAQ-9X20 system provides Alarm setting function for Analog Input and Counter Module. Users can set High/Low limit value to identify the alarm status and trig- ger a digital output as an event handling function.

  • Page 64: Security Setting

    RemoDAQ-9X20 Series User’s Manual Figure 5-16: Alarm Setting for Analog Input and Counter Modules There are three alarm types in Analog Input Modules: Disable: RemoDAQ-9X20 dose not executive alarm diagnosing function. Momentary: When the Input value is over or under the High/Low limit, the alarm signal will be sent only once.
  • Page 65 RemoDAQ-9X20 Series User’s Manual system. Once user setting the password into the RemoDAQ-9X20 firmware, important system configurations (Network, Firmware, Password) are only allowed to be changed by password verification. Figure 5-22: Password Setting Note: The default password of RemoDAQ-9X20 is “00000000”.

  • Page 66: Terminal Emulation

    RemoDAQ-9X20 Series User’s Manual center for help. 5.3.6 Terminal Emulation You can issue commands and receive response by clicking the Terminal button on the tool bar. There are two kinds of command format supported by this emulating function. Users can choose ASCII or Hexadecimal mode as their communication base.

  • Page 67: Data Gateway Setting

    RemoDAQ-9X20 Series User’s Manual Figure 5-23: Command Emulation 5.3.7 Data Gateway Setting RemoDAQ-9X20 is designed with an RS-485 Modbus Interface. As a Data Gateway, it integrates serial Modbus devices into Ethernet application easily. Click the tip of “RS-485/Modbus” to configure the...
  • Page 68 RemoDAQ-9X20 Series User’s Manual RS-485 network setting with following steps. Figure 5-26: RS-485 Modbus Network Setting 1. Define the parameter of the network, includes Parity, stop bit, Baud Rate (300~115200bps), and Timeout. 2. Click the “Apply” button, the password verification dialog block will pop up.

  • Page 69: Planning Your Application Program

    RemoDAQ-9X20 Series User’s Manual setting is done. 6 Planning Your Application Program 6.1 RemoDAQ-9X20 Command RemoDAQ-9X20 system accepts a command/response form with the host computer. When systems are not transmitting they are in listen mode. The host issues a command to a system with a specified address and waits a certain amount of time for the system to respond.
  • Page 70 RemoDAQ-9X20 Series User’s Manual six bytes and responded to pack Modbus format; the com- mand body defines target device and requested action. Following example will help you to realize this structure quickly. Example： If you want to read the value of RemoDAQ-9017 in RemoDAQ-9X20’s slot 0（The second channel;...

  • Page 71: Modbus Function Code Introduction

    RemoDAQ-9X20 Series User’s Manual Figure 6-2: Response Command Structure 6.1.2 Modbus Function Code Introduction To fullfill the programming requirement, there is a series of function code standard for user’s reference... Code (Hex) Name Usage Read Coil Status Read Discrete Output Bit...
  • Page 72 RemoDAQ-9X20 Series User’s Manual Preset Single Write data in 16-bit integer Register format Loopback Diagnostic testing of the Diagnosis communication port Force Multiple Coils Write multiple data to force coil ON/OFF Preset Multiple Write multiple data in 16-bit Registers integer format...
  • Page 73 RemoDAQ-9X20 Series User’s Manual Byte Byte Example: Read coil number 1 to 8 (address number 10001 to 10008) from RemoDAQ-9X20 01 01 00 01 00 08 Response message format for function code 01: Command Body Station Function Byte Data Data …...
  • Page 74 RemoDAQ-9X20 Series User’s Manual Byte Byte Example: Read coil number 1 to 8 (address number 10001 to 10008) from RemoDAQ-9X20 01 01 00 01 00 08 Response message format for function code 02: Command Body Station Function Byte Data Data …...
  • Page 75 RemoDAQ-9X20 Series User’s Manual Start Start Requested Requested Station Function Address Address Numberof Numberof Address Code High Register Register Byte Byte High Byte Low Byte Example: Read Analog inputs #1 and #2 in addresses 40001 to 40004 as floating point value from RemoDAQ-9X20.
  • Page 76 RemoDAQ-9X20 Series User’s Manual of 00 00 hex requests it to be OFF. And a value of FF FF hex requests it to release the force. Request message format for function code 05: Command Body Coil Coil Station Function Force...
  • Page 77 RemoDAQ-9X20 Series User’s Manual Function Code 06 Presets integer value into a single register. Request message format for function code 06: Command Body Station Function Register Register Preset Preset Address Code Address Address Data Data High Byte Low Byte High...
  • Page 78 RemoDAQ-9X20 Series User’s Manual Byte Byte Function Code 08 Echoes received query message. Message can be any length up to half the length of the data buffer minus 8 bytes. Request message format for function code 08: Command Body Station...
  • Page 79 RemoDAQ-9X20 Series User’s Manual Request message format for function code 15: Command Body Reque Request Start Start Force Force Station Byte ctio sted Address Address Data Data Addres Count Numb Number High High er of of Coil Byte Byte Byte...
  • Page 80 RemoDAQ-9X20 Series User’s Manual The normal responses return the station address, function code, start address, and requested number of coil forced. Command Body Start Start Requested Requested Station Function Number Number Address Code Address Address of Coil High of Coil...
  • Page 81 RemoDAQ-9X20 Series User’s Manual High Low Byte Byte Example: Preset constant #1 (address 40009) to 100.0 in RemoDAQ-9X20. 01 10 00 09 00 02 04 42 C8 00 00 Response message format for function code 16: The normal responses return the station address, function code, start address, and requested number of registers preset.

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