Lenze DDS System bus CAN for PLC - Manual (Page 60)

System bus (CAN) for Lenze PLC devices
Configuration (AIF interface)
4−10
l
PLC−Systembus EN 2.0
4.9 Diagnostics
The following codes can be used for diagnostics purposes:
Code Information displayed Information
C2121 AIF−CAN operating status Chapter 4.9.1 ^ 4−10
·
Settings cannot be carried out via these codes.
4.9.1 Automation interface (AIF) operating status
Via C2121 you can have the operating status of the automation interface displayed:
Code LCD Possible settings Information
Lenze Selection
C2121 AIF state g Bit 0 XCAN1_IN monitoring time
Bit 1 XCAN2_IN monitoring time
Bit 2 XCAN3_IN monitoring time
Bit 3 XCAN bus−off
Bit 4 XCAN operational
Bit 5 XCAN pre−operational
Bit 6 XCAN warning
Bit 7 Internally assigned
AIF status, bit−coded
·
Detailed information on this can
be found in the description for
the corresponding fieldbus
module.
C2121 Operating status Information
Bit4 = 1 Operational The system bus is fully functional. The PLC can transmit and receive parameter and process data.
Bit5 = 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 ^ 4−2
·
a reset node
– via C0358, if the PLC has been configured as a "quasi" master. ^ 3−8
– via the binary input signal "Reset node" at the CAN_Management SB ^ 7−20
Bit6 = 1 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.
Bit3 = 1 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 C2382/4. ^ 4−9