Siemens SINUMERIK 840D sl Function Manual page 42

A4: Digital and analog NCK I/Os
1.2 NCK I/O via PLC
Defining assignments
The assignments are specified via machine data:
MD10361 $MN_FASTIO_DIG_SHORT_CIRCUIT[n]
n: can accept values 0 to 9, so up to 10 assignments can be specified.
Two hexadecimal characters are provided for specifying the byte and bit of an output and an
input.
Specifying 0, A and B in input bits 12 - 15 results in the following logic operations:
0
A
B
Examples
Connect:
MD10361 $MN_FASTIO_DIG_SHORT_CIRCUIT = '04010302H'
Output 4, byte 1, connect to
Input 3, byte 2
AND operation:
MD10361 $MN_FASTIO_DIG_SHORT_CIRCUIT = '0705A201H'
Output 7, byte 5 AND operation with
Input 2, byte 1
OR operation:
MD10361 $MN_FASTIO_DIG_SHORT_CIRCUIT = '0103B502H'
Output 1, byte 3 OR operation with
Input 5, byte 2
42
Connect
AND operation
OR operation
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions