Channel-Related Diagnosis - Siemens SIRIUS 3RW44 System Manual

8.9.9 Channel-Related Diagnosis

Definition
Channel-related diagnosis
SIRIUS 3RW44 System Manual
GWA 4NEB 535 2195-02 DS 04
The channel-related diagnosis informs about channel errors of the modules
(here: soft starter) and represents a specification of the code-related diagnosis.
The channel-related diagnosis starts after the module status. The maximum
length is restricted to the maximum overall length of the slave diagnosis, i.e. 31
bytes. The channel-related diagnosis does not affect the module status.
The number of channel-related diagnosis messages is restricted to 9 (also refer
to station status 3, bit 7).
The structure of the channel-related diagnosis is as follows:
7 6 5
Byte 13
1 0 0 0 0 0 0 0
7 6 5
Byte 14
1 1 0 0 0 0 0 0
7 6 5
Byte 15
0 0 0
Channel type:
000 : No special channel type
B
Byte 16 to
byte 18
to
max. byte 31
Figure 8-18:Structure of the channel-related diagnosis
Notice
The channel-related diagnosis is always updated up to the current diagnosis
message in the diagnosis telegram. Subsequent older diagnosis messages are
not deleted. Remedy: Analyze the valid current length of the diagnosis telegram:
• STEP 7 from the RET_VAL parameter of SFC 13.
PROFIBUS DP Communication Module
0
Bit number
Code for channel-related diagnosis
0
Bit number
Input/output channel
0
Bit number
Error type (table on the next page)
Next channel-related diagnosis message
(same assignment as byte 13 to 15)
8-33