Siemens Simatic S7-400 - Manual (Page 128)

Digital Modules
4-6
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
4.3 Digital Module Parameter Assignment
Introduction
Digital modules can have different characteristics. You can set the characteristics
of dome modules by means of parameter assignment.
Tools for Parameter Assignment
You assign parameters to digital modules in STEP 7. You must perform parameter
assignment in STOP mode of the CPU.
When you have set all the parameters, download the parameters from the
programming device to the CPU. When there is a transition from STOP to RUN
mode, the CPU transfers the parameters to the individual digital modules.
Static and dynamic parameters
The parameters are divided into static and dynamic parameters.
Set the static parameters in STOP mode of the CPU, as described above.
In addition, you can modify the dynamic parameters in the current user program in
an S7 programmable controller by means of SFCs. Note, however, that after a
change from RUN
³
STOP, STOP
³
RUN of the CPU, the parameters set in
STEP 7 apply again. You will find a description of the parameter assignment of
modules in the user program in Appendix A.
Table 4-5 Static and dynamic parameters of the digital modules
Parameter Settable with CPU Operating
Mode
Static PG (STEP 7 HWCONFIG) STOP
Dynamic PG (STEP 7 HWCONFIG) STOP
SFC 55 in the user program RUN