What is the cause of the M7081-PLC error described as a loss of communication between the PLC and the host computer? What specific machine code is causing this error to occur? Have efforts been made to troubleshoot the issue, and if so, what actions have been taken?
The M7081-PLC timed out waiting for the host computer to transmit the MARK point identification signal error usually occurs when the PLC is unable to receive or interpret the signal from the host computer within the specified time limit.