ModbusTcpDevice
Figure 27. ModbusTcpDevice property sheet
Each client Modbus device object (ModbusAsyncDevice, ModbusTCPDevice, and ModbusTCPGatewayDevice) has an associated Modbus Config container slot to override these network-wide defaults. These properties adjust the settings for message transactions to (and from) only that device.
You access these properties by expanding and double-clicking the ModbusTcpDevice in the Nav tree.
In addition to the standard properties (Status Enabled, Fault Cause, Health and Alarm Source Info), these properties support the Modbus TCP device:
| Property | Value | Description |
|---|---|---|
| Device Address | number from 1 to 247 | Defines the unique number that identifies the current device object on the network. |
| Modbus Config | additional properties | Refer to Modbus Config. |
| Ping Address, Address Format | Hex (default), Decimal, or Modbus | Selects the format of an address used to automatically configure unique register addresses for the device’s points. The driver merges this address with the point address. |
| Ping Address, Address | number | Defines the base address to use. |
| Ping Address Data Type | drop-down list | Defines the type of numeric data. |
| Ping Address Reg Type | drop-down list | Defines the type of register. |
| Poll Frequency | drop-down list | Configures how frequently the system polls proxy points. |
| Input Register Base Address, Address Format | Hex (default), Decimal, or Modbus | Selects the format of an address used to automatically configure unique register addresses for the device’s points. The driver merges this address with the point address. |
| Input Register Base Address, Address | number | Defines the base address to use. |
| Holding Register Base Address, Address Format | Hex (default), Decimal, or Modbus | Selects the format of an address used to automatically configure unique register addresses for the device’s points. The driver merges this address with the point address. |
| Holding Register Base Address, Address | number | Defines the base address to use. |
| Coil Status Base Address, Address Format | Hex (default), Decimal, or Modbus | Selects the format of an address used to automatically configure unique register addresses for the device’s points. The driver merges this address with the point address. |
| Coil Status Base Address, Address | text | Defines the base address to use. |
| Input Status Base Address Format | Hex (default), Decimal, or Modbus | Selects the format of an address used to automatically configure unique register addresses for the device’s points. The driver merges this address with the point address. |
| Input Status Base Address | number | Defines the base address to use. |
| Device Poll Config | additional properties | Refer to Device Poll Config. |
| Points | additional properties | Provides a container for proxy points. |
| Ip Address | IP address | Identifies a device, which is connected to a network that uses the Internet Protocol for communication. |
| Port | number (defaults to 502) | Specifies the TCP port used by Modbus message transactions. Leave at the default (502) unless the TCP/Ethernet-side of the Modbus TCP/serial gateway uses another TCP port. |
| Socket Status | read-only | Reports the current condition of the TCP/IP socket. |
| Disable Transaction Id Check | true or false (default)
|
Disables (true) and enables (false) use of the Transaction Id when synchronizing client/server messages.
The most important bytes in a TCP frame are the Unit Identifier, Function Code and Data bytes. If your network does not need Transaction ID, use this property to disable it. |
| Max Transaction Id | number | Defines the largest number to assign as the Transaction ID. |