Does anyone know a quick way to clear a 1747-M11 EEPROM module? We've got one at the plant that either has a corrupt program in it or the chip itself is corrupt.
The machine sat unused and powered down for about a year, so the PLC battery was dead the the processor memory was blank.
The problem we've got is that on power-up the EEPROM writes a bad communications config when it loads and we can't configure RSLinx to communicate with the processor.
Installed in a 5/03, the module automatically writes the saved program to the processor even though the status bits for the memory module in the program are set to 0 (S:5/8, S:5/9, S:1/10-12, etc).
We normally run with S:1/12=1 so the EEPROM is used as backup in case the processor memory get porked, but this machine has never had that change made yet.
We've replaced the EEPROM with a new one and all is well, but we'd like to salvage this one for use in our training stand if we can clear the program to see if just it or the whole module is bad.
Thanks!
Mike in ND
The machine sat unused and powered down for about a year, so the PLC battery was dead the the processor memory was blank.
The problem we've got is that on power-up the EEPROM writes a bad communications config when it loads and we can't configure RSLinx to communicate with the processor.
Installed in a 5/03, the module automatically writes the saved program to the processor even though the status bits for the memory module in the program are set to 0 (S:5/8, S:5/9, S:1/10-12, etc).
We normally run with S:1/12=1 so the EEPROM is used as backup in case the processor memory get porked, but this machine has never had that change made yet.
We've replaced the EEPROM with a new one and all is well, but we'd like to salvage this one for use in our training stand if we can clear the program to see if just it or the whole module is bad.
Thanks!
Mike in ND