Siemens ET 200S Manual page 163

Channel-Specific Diagnosis
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
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
7 6 5 4 3 2 1
0
1 0
000000 to 001100
B
channel-specific diagnosis.
Code for channel-specific diagnosis
7 6 5 4 3 2 1
0
000000 to 000011 : Number of the channel that supplies the diagnosis
B B
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 6-22)
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 the IM151-1
BASIC
Commissioning and Diagnostics
Bit no.
: Slot of the module that supplies the
B
Bit no.
Bit no.
6-39