krishna431
Member
Hello All,
I am using Automation Direct PLCs which are interfaced to communicate with InTouch HMI. The communication is done through modbus using the System Management Console which is part of InTouch.
Now the issue I'm facing is - I display some information about the PLCs including the scan times of all the PLCs I have connected on my HMI screen. It's not necessary, but its something I like to see now and then. I have noticed that one of my PLC's (lets call it PLC1) scan times repeated goes to 0 and back to whatever value it was on. This is every few seconds, and it is inconsistent. It's difficult to find what is causing this issue, as the communication between PLC1 and the HMI is done the same way as all the other PLCs I have networked, and they all behave perfectly. I am communicating with PLC1 for monitoring and controlling other outputs, and they all work fine, with no communication loss as far as I can tell.
Is there any reason why this value display on the HMI screen could be going to 0 and back? (And yes - I have made sure that I'm not using the same tag in different places)
I am using Automation Direct PLCs which are interfaced to communicate with InTouch HMI. The communication is done through modbus using the System Management Console which is part of InTouch.
Now the issue I'm facing is - I display some information about the PLCs including the scan times of all the PLCs I have connected on my HMI screen. It's not necessary, but its something I like to see now and then. I have noticed that one of my PLC's (lets call it PLC1) scan times repeated goes to 0 and back to whatever value it was on. This is every few seconds, and it is inconsistent. It's difficult to find what is causing this issue, as the communication between PLC1 and the HMI is done the same way as all the other PLCs I have networked, and they all behave perfectly. I am communicating with PLC1 for monitoring and controlling other outputs, and they all work fine, with no communication loss as far as I can tell.
Is there any reason why this value display on the HMI screen could be going to 0 and back? (And yes - I have made sure that I'm not using the same tag in different places)