Hello,
I not very familiar with this protocol, any body knows or have an example of a ladder program to talk with external devices trough serial RS 485 network vith the protocol MODBUS RTU master.
I using a simple PLC M91 from Unitronic that have a serial port 485 and have built-in RTU MODBUS master protocol communication .
Any help will be very appreciate.
Thanks in advance
I not very familiar with this protocol, any body knows or have an example of a ladder program to talk with external devices trough serial RS 485 network vith the protocol MODBUS RTU master.
I using a simple PLC M91 from Unitronic that have a serial port 485 and have built-in RTU MODBUS master protocol communication .
Any help will be very appreciate.
Thanks in advance