You enable a parameter by setting a logical "1" at the corresponding bit.
Table A-3
Data record 1 for parameters of digital input modules
Byte
Bit
Meaning
Byte 0
7
Hardware interrupt enable
6
Diagnostics interrupt enable
0
Reaction to error
1
Byte 1
Hardware interrupt
7
On rising edge at channel 7
6
On rising edge at channel 6
5
On rising edge at channel 5
4
On rising edge at channel 4
3
On rising edge at channel 3
2
On rising edge at channel 2
1
On rising edge at channel 1
0
On rising edge at channel 0
Byte 2
Hardware interrupt
7
On rising edge at channel 15
6
On rising edge at channel 14
5
On rising edge at channel 13
4
On rising edge at channel 12
3
On rising edge at channel 11
2
On rising edge at channel 10
1
On rising edge at channel 9
0
On rising edge at channel 8
Byte 3
Hardware interrupt
7
On falling edge at channel 7
6
On falling edge at channel 6
5
On falling edge at channel 5
4
On falling edge at channel 4
3
On falling edge at channel 3
2
On falling edge at channel 2
1
On falling edge at channel 1
0
On falling edge at channel 0
1
Only for 6ES7 421-7BH0x-0AB0
The following table shows the structure of data record 1 (bytes 4, 5, and 6) for the parameters
of digital input modules.
Parameter sets of signal modules
A.2 Parameters of digital input modules
S7-400 Automation System Module Data
398
Reference Manual, Ausgabe 11/2016, A5E00850736-08