800PEC <-> 800xA
Please, inform if it is possible bus communication between PLC 800PEC and PLC 800xA
Sorry, not my cup of tea.
AC 800PEC and AC 800M should be able to exchange MMS Access Variables, maybe even IAC (if Control Builder M with PEC has this enabled) over an Ethernet connection.
For fieldbuses, surely there must be something they have in common; eg. RS232 or ModbusTCP coming first to mind.