MicroLogix 1200 communication to laptop
MicroLogix 1200 communication to laptop
(OP)
All,
At a customer site yesterday, they have several MicroLogix 1200 controllers. Some of the controllers have 2 communication ports, 2 of them have only one on the front. Using RSLinx Classic and a PM02 (series B) cable, I was able to connect to each of the ports on the controllers with 2 ports. They both appear as DH485 protocol. I was unable to establish communication with the controllers that have only one port. I attempted deleting the driver and recreating it numerous times, and get a timeout message using autoconfigure. As I had no trouble connecting to the controllers with 2 ports, I know I am using the correct cable and the correct port configuration, unless I need a different cable for the (presumably) older controllers. Any ideas?
Brad Waybright
It's all okay as long as it's okay.
At a customer site yesterday, they have several MicroLogix 1200 controllers. Some of the controllers have 2 communication ports, 2 of them have only one on the front. Using RSLinx Classic and a PM02 (series B) cable, I was able to connect to each of the ports on the controllers with 2 ports. They both appear as DH485 protocol. I was unable to establish communication with the controllers that have only one port. I attempted deleting the driver and recreating it numerous times, and get a timeout message using autoconfigure. As I had no trouble connecting to the controllers with 2 ports, I know I am using the correct cable and the correct port configuration, unless I need a different cable for the (presumably) older controllers. Any ideas?
Brad Waybright
It's all okay as long as it's okay.
RE: MicroLogix 1200 communication to laptop
RE: MicroLogix 1200 communication to laptop
Brad Waybright
It's all okay as long as it's okay.
RE: MicroLogix 1200 communication to laptop
A PM-02 cable is a RS232 cable for DF1 comms, if the port is set for DH485, then you need a converter, like a 1747-PIC (serial) or UIC (USB), there are also some aftermarket DH485 comm adaptors that work quite well too.
If the single port ML1200 will not communicate with your laptop and a serial cable, it may be setup for DH485, in that case you can press and hold the DCOMM button under the cover, and the comms will revert to the default DF1 setup for the port, this link discuss's the issue, https://control.com/thread/1342907356
MikeL.
RE: MicroLogix 1200 communication to laptop
I appreciate the help.
Brad Waybright
It's all okay as long as it's okay.
RE: MicroLogix 1200 communication to laptop
Brad Waybright
It's all okay as long as it's okay.