Siemens Simatic S7-400

You enable a parameter by setting a logical "1" at the corresponding bit.
Table A-6 Data record 1 for parameters of digital output modules
Byte Bit Meaning
Byte 0 7
6 Diagnostics interrupt enable
5
4
3
2
1
0 Reaction to CPU STOP
Byte 1
Substitute
value
7 Enable substitute value 1 on channel 7
6 Enable substitute value 1 on channel 6
5 Enable substitute value 1 on channel 5
4 Enable substitute value 1 on channel 4
3 Enable substitute value 1 on channel 3
2 Enable substitute value 1 on channel 2
1 Enable substitute value 1 on channel 1
0 Enable substitute value 1 on channel 0
Byte 2
Substitute
value
7 Enable substitute value 1 on channel 15
6 Enable substitute value 1 on channel 14
5 Enable substitute value 1 on channel 13
4 Enable substitute value 1 on channel 12
3 Enable substitute value 1 on channel 11
2 Enable substitute value 1 on channel 10
1 Enable substitute value 1 on channel 9
0 Enable substitute value 1 on channel 8
The following table shows the structure of data record 1 (bytes 3, and 4) for the parameters of
digital output modules.
You enable a parameter by setting a logical "1" at the corresponding bit.
Table A-7 Data record 1 for parameters of digital output modules
Byte Bit Meaning
Byte 3*
Substitute
value
7 Enable substitute value 1 on channel 23
6 Enable substitute value 1 on channel 22
5 Enable substitute value 1 on channel 21
4 Enable substitute value 1 on channel 20
3 Enable substitute value 1 on channel 19
2 Enable substitute value 1 on channel 18
1 Enable substitute value 1 on channel 17
0 Enable substitute value 1 on channel 16
Parameter sets of signal modules
A.3 Parameters of digital output modules
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 401