Hello. I am working on a project that uses an Allen Bradley Micrologix 1100 PLC. I have two devices with RS232 output (actually one is RS232, the other is RS422) that I need to integrate.
One of the devices is already integrated. We purchase an Allen Bradley cable to connect to the RS-232 port on the PLC, and splice on the wires from the RS232 device. This device is working just as we want it to.
I need to add the second device, which actually has an RS-422 serial output. However, it looks like the PLC only has the one input port for RS-232 signals. I've read in the documentation that the PLC is capable of using RS-232 or RS-485 communications, but unfortunately I'm not too familiar with these protocols.
I'm looking for advice on the best way to integrate the two signals with the PLC. Is there an add-on that I can purchase that would give me an additional serial input (that will be compatible with RS-422)? Or is there a way to combine the signals from the two devices, and use the single serial input port on the PLC to read those signals? If so, will the PLC be able to distinguish between the two devices?
Thanks in advance!
One of the devices is already integrated. We purchase an Allen Bradley cable to connect to the RS-232 port on the PLC, and splice on the wires from the RS232 device. This device is working just as we want it to.
I need to add the second device, which actually has an RS-422 serial output. However, it looks like the PLC only has the one input port for RS-232 signals. I've read in the documentation that the PLC is capable of using RS-232 or RS-485 communications, but unfortunately I'm not too familiar with these protocols.
I'm looking for advice on the best way to integrate the two signals with the PLC. Is there an add-on that I can purchase that would give me an additional serial input (that will be compatible with RS-422)? Or is there a way to combine the signals from the two devices, and use the single serial input port on the PLC to read those signals? If so, will the PLC be able to distinguish between the two devices?
Thanks in advance!