Technical data

Organization blocks to control the start-up procedure
Block Function and call criterion
OB 20
Call on request for COLD RESTART (manual
and automatic)
OB 21
Call on request for MANUAL WARM
RESTART/RETENTIVE COLD
RESTART
OB 22
Call on request for AUTOMATIC
WARM RESTART/RETENTIVE COLD
RESTART
Organization blocks for reactions to device or
program errors
1)
Block Function and call criterion
OB 19
Runtime error (LZF):
called block not loaded
OB 23
Timeout (QVZ) in user program (during direct
access to I/O modules or other S5 bus
addresses)
OB 24
Timeout (QVZ) when updating the process
image and transferring interprocessor
communication flags
OB 25
Addressing error (ADF)
OB 26
Cycle time exceeded (ZYK)
OB 27
Op. code error (BCF): substitution error
OB 28
STOP by PG function/stop switch/
S5 bus
2)
OB 29
Op. code error (BCF):
code not permitted
OB 30
Op. code error (BCF):
parameter not permitted
OB 31
Other runtime errors (LZF)
OB 32
Runtime error (LZF): load and transfer error
with data blocks
OB 33
Collision of time interrupts (WECK-FE)
Table 2-2 Overview of the organization blocks for start-up
Table 2-3 Overview of the organization blocks for error handling
2
Program, Organization and Sequence Blocks
CPU 928B Programming Guide
C79000-B8576-C898-01
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