Channel-Specific Diagnosis - Siemens SIMATIC ET 200S Manual

Commissioning and Diagnostics
6.1.6.8

Channel-specific diagnosis

Definition
The channel-specific diagnosis gives information on channel errors of modules and
expands on the module diagnosis. The channel-specific diagnosis starts after the
module status (if the parameters are preset accordingly). The maximum length is
limited by the total maximum length of the slave diagnosis from 43/62 bytes in
DPV0 mode or 110/128 bytes in DPV1 mode. The channel-specific diagnosis does
not affect the module status.
A maximum of 9 (in DPV0 mode) or 15 (in DPV1 mode with IM151-1
HIGH FEATURE) channel-specific diagnostic messages are possible (see also
station status 3, bit 7).
Channel-specific diagnostics
The channel-specific diagnosis for the ET 200S with the IM151-1 BASIC is
structured as follows:
Byte 16
Byte 17
Byte 18
Bytes 19
to 42
Figure 6-25
6-38
7 6 5 4 3 2 1
0
1 0
000000 up to 001100
B
channel-specific diagnosis.
Code for channel-specific diagnosis
7 6 5 4 3 2 1
0
000000 up to 000011
B
diagnosis
01 : Input channel
B
10 : Output channel
B
11 : Input/output channel
B
7 6 5 4 3 2 1
0
Error type (see Table 6-12 to Table 6-23)
Channel
001 : Bit
B
type:
010 : 2 bits
B
011 : 4 bits
B
100 : Byte
B
101 : Word
B
110 : 2 words
B
Next channel-specific diagnostic message
(assignment as for bytes 16 to 18)
Structure of the channel-specific diagnosis for the ET 200S with IM151-1
BASIC
Bit no.
: Module slot that sends the
B
Bit no.
: Number of the channel that sends the
B
Bit no.
ET 200S Distributed I/O System
EWA-4NEB 780602402-12