System data RS 7
Programmable controller STOP mode IDs (ISTACK)
Address: E F007H
High byte
Bit no. Assignment
15
Reserved
14
13
12 Faulty ISTACK level
11 Illegal start-up type (UANL)
10 Interruption in stop loop
9 Illegal call of system block (SYSFHL)
8 Error in start-up block (AFEL)
Low byte
7 Interruption by system (USYS –warm restart
possible)
6 Interruption by programming error
(UPROG – cold restart)
5 "End of program test" (BEARBE)
4 Stop switch (STOPS)
3 End of operation stop (STS)
2 End of cycle stop (STP)
1 Multiprocessing stop (HALT)
0 PG stop (PGSTP)
Table 8-6 Bits of RS 7 (PLC stop IDs)
Bit Assignment of the System Data Words
CPU 948 Programming Guide
C79000-G8576-C848-04
8 - 21