rQx
Lifetime Supporting Member
Hello!
I would need some help on a question my customer has:
He wants to communicate with our MicroLogix 1400 using Modbus and RS485. I'm not quite familiar in the communication and protocol but I'll make an attempt to explain my problems.
In the current situation, we have a PLC, one HMI and a Frequency Control. PLC and HMI are connected through a switch. PLC and my frequency control is connected on CommPort0 with a 1763-NC01 cable.
The port I need to communicate over Modbus RS485 is also CommPort0? Is it possible to solve?
Unlike ethernet / ip communication which (as I understand it) does not need to be configured by me in the PLC for it to work, I have to program the communication and what information should be passed on to their (my customer) Modbus Master?
/ Tim
I would need some help on a question my customer has:
He wants to communicate with our MicroLogix 1400 using Modbus and RS485. I'm not quite familiar in the communication and protocol but I'll make an attempt to explain my problems.
In the current situation, we have a PLC, one HMI and a Frequency Control. PLC and HMI are connected through a switch. PLC and my frequency control is connected on CommPort0 with a 1763-NC01 cable.
The port I need to communicate over Modbus RS485 is also CommPort0? Is it possible to solve?
Unlike ethernet / ip communication which (as I understand it) does not need to be configured by me in the PLC for it to work, I have to program the communication and what information should be passed on to their (my customer) Modbus Master?
/ Tim