Diagnostics
Operating state of system bus (CAN)
9
Networking via system bus (CAN)
9.11
9.11.2
l
9.11-3
EDSPM-TXXX-3.0-04/2004
9.11.2 Operating state of system bus (CAN)
Index I2359
h
displays the operating status of the system bus.
I2359
h
Operating status Description
0 Operational The system bus is fully functional. The I/O system c an transmit and receive parameter and process data.
1 Pre-Operational The I/O system can transmit and receive parameter da ta while process data are ignored.
The status can be changed from Pre-Opera tio nal to Operational by:
•
The CAN master
•
An NMT telegram ’00 01 00’
2 Warning The I/O system has received incorrect telegrams and become passive in the overall system bus environment, i. e., the I/O
system c an no longer transmit data.
Possible causes:
•
A missing bus termination
•
Insufficient shielding
•
Potential differences in the earth connections for the control electronics
•
The bus load is too high
3 Bus off The I/O system has disconnected itself from the system bus after recei ving too many inc orrect telegrams.
Index Name Possible settings Important
Lenze Selection
I2359
h
CAN state
0 {1} 3
Display only E 9.11-3
0
1
2
3
Operational
Pre-Operational
Warning
Bus off
System bus status
9.11.3 Reading out the module identifiers
When using the modular system, the number of the modules connected to the
backplane bus as well as the module types used can be read out via index I1027
h
.
Each module type can be clearly identified via a hexadecimal value.
Index Subindex Reading... Module type Module identifier
0 ... the number of pl ugged modules (0 ... 32) – 0
h
... 20
h
No module 0
h
8×digital input 9FC1
h
16×digital input 9FC2h
1×counter/16×digital input 08C0h
I1027
h
1 ... 32 ...themoduletypeinslots1...32
8×digital output 1A
16×digital output 1A
8×digital output 2A
4×relay
AFC8
h
8×digital input / output BFC9
h
4×analog input 15C4h
4×analog output A5E0
h
4×analog input / output 45DB
h
2/4×counter B5F4
h
SSI interface B5DB
h
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