Siemens SIMATIC S5-95F User Manual

Testing the User Program and Storing It on the Memory Submodule S5-95F
14.1.3 Forcing Variables with "FORCE VAR"
FORCE VAR allows you to modify the following variables when the programmable controller is either
at STOP or RUN: I, Q, F, T, C and D.
When the PLC is at RUN, the new process variables are used for the program scan. The variables
can be changed again, without any indication, in the course of the program. The process variables
are controlled asynchronously to the program scan, and in both subunits simultaneously.
Special Features:
• Changes are possible in debug mode only; in failsafe or quasi-failsafe mode, they may only be
read.
• I, Q and F variables may be changed in the process I/O image either bit by bit, byte by byte or
word by word.
• Edge flag control must be observed in the case of T and C variables in KM format.
• The signal status display is aborted if a bad format or operand entry is detected, and the
programmer outputs the "NO FORCING POSSIBLE" message.
Information on invoking the test functions on the programmer can be found in the relevant
programmer manuals.
14.1.4 Search Function
Search locates specific "keys" in the program and lists them on the programmer's display. Once
found, the "keys" may be modified.
A search may be instigated in the following programmer functions:
• INPUT
• OUTPUT
• STATUS
Possible search keys are:
• Statements (e.g. A I 32.0)
• Operands (e.g. Q 32.5)
• Labels (e.g. X01) Possible in function blocks only!
• Addresses (e.g. 0006
H
)
Note
Different programmers execute a search in different ways. For details, please refer to the
programmer operating manual.
14-4 EWA 4NEB 812 6210-02

Siemens SIMATIC S5-95F Specifications

General

Brand	Siemens
Model	SIMATIC S5-95F
Category	Controller
Language	English