Lenze DDS System bus CAN for PLC - Manual (Page 110)

7.6 CAN_Management (node number: 101)
System bus (CAN) for Lenze PLC devices
CAN system blocks
7−22
L
PLC−Systembus EN 2.0
7.6.5 Status messages
The CAN_Management SB provides different status messages which can be processed in the PLC
program:
Variable Description
CAN_bCe1CommErrCanIn1_b TRUE CAN1_IN communication error
CAN_bCe2CommErrCanIn1_b TRUE CAN2_IN communication error
CAN_bCe3CommErrCanIn1_b TRUE CAN3_IN communication error
CAN_bCe4BusOffState_b TRUE CAN bus "off state" recognised
CAN_bFreePdoTxBufferOverflow_b Free CAN objects
TRUE Overflow of send order memory
·
See L_CanPdoTransmit FB. ( ^ 10−8)
CAN_bFreePdoRxOverflow_b Free CAN objects
TRUE Overflow of the receive memory
·
See L_CanPdoReceive FB. ( ^ 10−12)
CAN_bOverrunLifeTime_b CAN"Node guarding" monitoring mechanism
TRUE The "Node life time" has been exceeded
·
See chapter 2.10, "monitoring mechanisms". ( ^ 2−21)
CAN_byNodeAddress 1...63 CAN node address ( ^ 3−3)
CAN_byState Operating status of the system bus
1 Operational
2 Pre−operational
3 Warning
4 Bus−off