1. M510/B310 CANopen optional interface
2. Error handling and diagnostics
3. PDOs

PDOs

SendCounter

TxPDOs feature an additional SendCounter variable under the Control menu item.

The output variable is incremented by one whenever a PDO is sent.

ReceiveCounter

RxPDOs feature an additional ReceiveCounter variable under the Status menu item.

The input variable is incremented by one whenever a PDO is received. In this way newly arrived PDO are always logged, even if the data in the PDO are unchanged. The variable nevertheless indicates whether a device still sends data on a regular basis. It is useful to link variable with the PLC and monitor it.