Computer Drive Installation Instructions

8 PLC Machine Data (PLC MD) 09.95
8.2 PLC MD for the operating system (system data)
No. of function numbers
19
Default value Lower input limit Upper input limit Units
3 0 10 –
DB 60
DW 19
Number of function numbers for a UI kernel sequence initiation.
Input values: 0 = UI kernel sequence initiation not allowed in this PLC
1...10 (max.) = UI kernel sequence initiation allowed.
The input value specifies the number of function numbers,
beginning with MD DB60, DW20, for a UI kernel sequence
initiation.
3 = Default value
See Computer Link.
Function no. for kernel sequence initiation
20-29
Default value Lower input limit Upper input limit Units
see table 0 255 –
DB 60
DW 20-29
Default value
MD Value
20 25
21 26
22 30
23
.
.
.
29
0
.
.
.
0
See Computer Link.
Spare
31
Default value Lower input limit Upper input limit Units
- 1 - 1 127 –
DB 60
DW 31
No. of interrupt byte on interface PLC/PLC 135 WD
30
DB 60
DW 30
This tells the PLC operating system the number of the interrupt byte to be processed on the
interface module.
Enter - 1 if no byte is to be processed. If a high-speed input is to be processed, it must be
interfaced over the IF PLC module's X141 connector. There can be as many as eight inputs.
The relevant input byte is specified in this MD.
8–6
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)