Lenze DDS System bus CAN for PLC - Manual (Page 71)

System bus (CAN) for Lenze PLC devices
Configuration (FIF interface)
5−11
l
PLC−Systembus EN 2.0
5.11 Diagnostics
The following codes can be used for diagnostics purposes:
Code Information displayed Information
C2459 FIF−CAN operating status Chapter 5.11.1 ^ 5−11
C2460 Number of the telegrams sent and received Chapter 5.11.2 ^ 5−12
C2461 Bus load (in %) Chapter 5.11.3 ^ 5−13
·
Settings cannot be carried out via these codes.
5.11.1 Function interface (FIF) operating status
Via C2459 you can have the operating status of the function interface displayed:
Code LCD Possible settings Information
Lenze Selection
C2459 CAN1 state g 0 Operational
1 Pre−operational
2 Warning
3 Bus off
System bus status (FIF−CAN)
C2459 Operating status Information
0 Operational The system bus is fully functional. The PLC can transmit and receive parameter and process data.
1 Pre−operational The PLC can transmit and receive parameter data. Process data, however, are ignored.
A status change from Pre−Operational to Operational can be effected by:
·
the CAN master ^ 3−2
·
a reset node
– via C2458, if the PLC has been configured as a "quasi" master. ^ 5−8
– via the binary input signal "Reset node" at the FIF_CAN_Management SB ^ 7−20
2 Warning The PLC has received faulty telegrams and is only involved in the system bus passively, i. e. no data can be
sent from the PLC anymore.
Possible causes:
·
Missing bus termination
·
Non−sufficient shielding
·
Differences in potential with regard to the earth connection of the control electronics
·
Bus load too high
·
PLC is not connected to the system bus.
3 Bus−off The PLC has disconnected from the system bus due to too many faultily received telegrams.
·
The response to this status can be configured via C2484. ^ 5−9