Search; Programmer Operator Functions - Siemens SIMATIC S5 Manual

Program Test
4.3

Search

The Search function looks for specific keys in the program and lists them on the programmer
display. You can then make program changes at this point.
This function is only possible in Test mode.
You can execute Searches with the following programmer functions:
• INPUT
• DISPLAY
• STATUS
Possible search keys include the following:
• Statements
• Operands
• Labels
• Addresses
Note
The Search function is executed differently by different programmers. It is described in
detail in the appropriate operator's guide.
4.4

Programmer Operator Functions

Programmer operator functions are limited in the case of the S5-115F for safety reasons.
The limitations depend on the operating mode and are most restrictive in safety operation.
Programmers cannot be used in RUN mode and, in STOP mode, they can only be used to read data.
One exception is data input via the parameter entry DB. In safety mode, you can change the
parameter entry DB via the programmer even in PLC STOP. The parameter entry DB offers you the
advantage of being able to delay definition of certain operating parameters until "during
operation". Of course, you must check the parameters entered for safety limits with a filter
program in the control program. This filter program is checked like all other control program
blocks by the expert during the individual system acceptance test.
Only the parameter entry DB configured with COM 115F can be changed using the programmer.
Note
The configured parameter entry DB must not be located on the EPROM submodule.
For this reason, load the parameter entry DB into the PLC memory using the "Transfer"
programmer function, or generate the parameter entry DB in the restart OBs (OB 21,
OB 22).
Example:
Entering a pressure setpoint via the parameter control DB. Within the limits 10 to 15 bars, this
value is not critical for the process. The value for the pressure setpoint is located at a definite point
in the parameter entry DB. The error program scans the input and accepts only those values that
are within the configured limits.
4-4
(e.g. A I 0.1)
(e.g. Q 1.0)
(e.g. X 01), possible only in function blocks
(e.g. 006)
S5-115F Manual
EWA 4NEB 811 6149-02