Technical data

Information about the error
ISTACK ID Meaning
Table 5-6 continued:
LEVEL Z
(continued)
Z: 001A: not used
001C: CL CONTROLLER
INTERRUPT
001E: not used
0020: DELAY INTERRUPT
0022: not used
0024: PROCESS INTERRUPT
0026: not used
0028: RETENTIVE MANUAL COLD
RESTART
002A: RETENTIVE AUTOMATIC COLD
RESTART
002C: transition to stop mode after stop
in multiprocessing,
stop switch or PG STOP
002E: interface error
0030: collision of time interrupts
0032: CL controller error
0034: cycle error
0036: not used
0038: operation code error
003A: runtime error
003C: addressing error
003E: timeout
0040: not used
0042: not used
0044: MANUAL WARM
RESTART
0046: AUTOMATIC WARM
RESTART
SAC
STEP address counter:
- contains the
absolute address of the last
operation of an interrupted program
processing level to be processed in the
program memory
- if an error occurs, SAC indicates the operation
that caused it.
- before the first operation of a processing
level is executed, SAC is set to "0"
Control Bits and Interrupt Stack
CPU 928B Programming Guide
5 - 20 C79000-B8576-C898-01