A
Any of you know how to minimize delay time in MODBUS RTU over RS-485 2-wire. Since, my PLC is currently connected with Caterpillar engine where it uses a Siemens Logo as the engine local governor. I read 4 words (40137,40140,40150,40188) and write a single word (40001) and bit (00001) in to it.
The strange thing is: my transmission command could be received in 3s, but I received the reply in my system in 1.5 minutes. Very long time. I use 9600 baudrate.
The strange thing is: my transmission command could be received in 3s, but I received the reply in my system in 1.5 minutes. Very long time. I use 9600 baudrate.