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Key Features

Excerpt
  • ModbusTCP Server
    • I/O Mode
    • Message Mode
  • ModbusTCP Client
    • I/O Mode (Command Table)
    • Message Mode
  • Device identification data - FC43 support
  • ModbusTCP telegram fragmentation
  • process data watchdog
  • inactivity timeout configuration
  • max. register and coil range configuration
  • connection indications
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Supported Protocols

  • MODBUS APPLICATION PROTOCOL SPECIFICATION,
    V1.1a, June 4, 2004,
  • MODBUS MESSAGING ON TCP/IP IMPLEMENTATION GUIDE,
    V1.0a, June 4, 2004
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Table of Contents


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FeatureDescription
Maximum number of input data5760 bytes
Maximum number of output data5760 bytes
Acyclic communication

Read/Write Register:
Max. 125 Registers per Read Telegram (FC 3,4,23)
Max. 121 Registers per Write Telegram (FC 23),
Max. 123 Registers per Write Telegram (FC 16)

Read/Write Coil:
Max. 2000 Coils per Read Telegram (FC 1, 2)
Max. 1968 Coils per Write Telegram (FC 15)

Modbus Function Codes1, 2, 3, 4, 5, 6, 7, 15, 16, 23, 7343
Mode

Message Mode: Client, Server
(I/O data area is not used in this mode)

I/O Mode: Server

Baud rates10 and 100 MBit/s
Data transport layerEthernet II, IEEE 802.3

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