Siemens CPU 948 User Manual

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/COLD RESTART WITH
MEMORY
OB 22 Call on request for AUTOMATIC WARM RESTART/COLD RESTART
WITH MEMORY
Organization blocks to control the start-up procedure
Block Function and call criterion
OB 38 Organization of the start-up procedure for communication in the
"soft stop" mode.
OB 39 Organization of the cyclic program for communication in the
"soft stop" mode.
Organization blocks for reaction to device or program errors
1)
Block Function and call criterion
OB 19 Runtime error (LZF): called block not loaded (PB, SB, FB, FX)
or attempt to open a data block that is not loaded (DB, DX)
OB 23 Timeout (QVZ) in user program (during direct access to I/O modules)
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)
Table 2-4 continued:
OB 27 Substitution error (SUF)
Table 2-2 Overview of the organization blocks of the CPU 948 for start-up
Table 2-3 Organization blocks of the CPU 948 for a SOFT STOP
Table 2-4 Overview of the organization blocks of the CPU 948 for error handling
Program, Organization and Sequence Blocks
CPU 948 Programming Guide
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Siemens CPU 948 Specifications

General

Brand	Siemens
Model	CPU 948
Category	Controller
Language	English