Parameters

Serial

Serial parameters to be set selecting the interfaces node COM_1. They are common for both operating modes client and server.

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Note

The parameter Data bits always has to be set to 8 for MODBUS.

MODBUS RTU Server

Server specific parameters to be set selecting the protocol’s node Modbus_RTU_Server.

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Address

Bus address of the PLC as MODBUS RTU Server on that interface

Byte Order

Format/Endianess for the transmission of WORD values (register) within the request/response telegram (default: Big Endian)

Disable

Parameter Default Value Meaning
Disable write to %MB from 0 0 … 65535 Disable write access starting at %MBx
Disable write to %MB to 0 0 … 65535 Disable write access up to %MBx
Disable read from %MB from 0 0 … 65535 Disable read access starting at %MBx
Disable read from %MBx to 0 0 … 65535 Disable read access up at %MBx

It is possible to disable read and/or write access to individual segments. Reading/writing is disabled beginning at the set start address and is valid up to the set end address (inclusive).

MODBUS RTU Client

Modbus RTU Client does not have any protocol parameters.