chopin
Member
Hello guys,
I have upgraded the old 318-2aj00-0ab0 cpu to a 317-1ak14-0ab0. After an upgrade there seems to be a communication issue to a HMI panel (6av6 542-0ca10-0ax0)
The connection is over MPI. With the new CPU I have BF1 LED flashing occasionally, once per 30-60 seconds.
On the HMI the displayed values are flashing (for 2 seconds it will display values, for another two ######).
There is absolutely nothing in the diagnostic buffer apart from PLC stop/start/warm restart action after the changeover.
After the cpu change I have changed the communication settings in the HMI project to point to 317 rather than 318 and downloaded the project.
HMI is running WinCC Flexible 2008SP5 application.
I have compared my old and new projects in terms of MPI addresses/baud rates but it is all exactly the same. There has been no change to the PLC program as well. Old and new blocks are identical.
Can someone advice where else to look at.
I have upgraded the old 318-2aj00-0ab0 cpu to a 317-1ak14-0ab0. After an upgrade there seems to be a communication issue to a HMI panel (6av6 542-0ca10-0ax0)
The connection is over MPI. With the new CPU I have BF1 LED flashing occasionally, once per 30-60 seconds.
On the HMI the displayed values are flashing (for 2 seconds it will display values, for another two ######).
There is absolutely nothing in the diagnostic buffer apart from PLC stop/start/warm restart action after the changeover.
After the cpu change I have changed the communication settings in the HMI project to point to 317 rather than 318 and downloaded the project.
HMI is running WinCC Flexible 2008SP5 application.
I have compared my old and new projects in terms of MPI addresses/baud rates but it is all exactly the same. There has been no change to the PLC program as well. Old and new blocks are identical.
Can someone advice where else to look at.