Technical data

Information about the error
ISTACK ID Meaning
...NO.
Block type and number of the last block
processed
Table 5-6 continued:
REL-SAC
Relative STEP address counter:
contains the
relative address (related to
the block start address) of the last
operation to be executed in the last
block
processed (you can display relative
addresses on a programmer using the
PG mode "input disable"/key-switch
or with S5-DOS from stage IV using
a function key or you can output the
block on a printer)
ICMK
Interrupt condition code group word:
ICMK indicates all the causes of interruptions
that have occurred up to now and have
not yet been completely processed (see
"System Data Memory Assignment",
Section 8.3.5)
ICRW
Interrupt condition code reset word (see "System
Data Memory Assignment", (Section 8.3.5)
DB-ADD
Absolute start address of the data block opened last
in the program memory (DW 0)
(DB-ADD = 0000, if no DB was opened)
DB-NO.
Number of the data block opened last
DBL-REG
Length of the data block opened last
BA-ADD
Absolute address in the program memory of the
operation to be processed next in the block last
called
...No.
Block type and number of the block last
called
5
Control Bits and Interrupt Stack
CPU 928B Programming Guide
C79000-B8576-C898-01
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