Modbus Write - Easy Electronics xLogic Micro PLC User Manual

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Data format instruction

6.5.33 Modbus Write

Short description:
When a high level in En, the Modbus Write block will be activated and the xLogic could communicate with
peripheral as a master via RS232 or RS485 interface, further the output will be switched on when the
communication is established successfully. Otherwise the output (Q pin) is kept"off" it means
communication has failed.
A signal at input R resets output Q and disable, this block at the same time
Connection Description
Input En A high signal at En input will enable "Modbus Write" function block to be activated
Input R Reset the value read from peripheral and set the output to 0 via the R (Reset) input.
Reset has priority over En
Parameter Slave address: 1 is default .
Communication protocol: Modbus(RTU)
Communication parameter: baud rate (BPS),Data bits, Stop bits,
Parity， Overtime (response time out)
Comm Type: RS232 or RS485( Communication interface of xLogic )
Data register Index: High Low /Low High
Command:
185
05 Write Single Coil