II - DCE FEL ČVUT v Praze

Parameterization
Default
settings
Configurable
characteristics
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04
SIMATIC S7 Ex Digital Modules
The parameters for the digital input modules SM 321; DI 4 x NAMUR are set
with STEP 7 . You must implement the settings in CPU STOP mode. The
parameters set in this way are stored in the CPU during transfer from PG to
S7-300. These parameters are transferred to the digital module during the
status change from STOP RUN.
Alternatively, you can also change several parameters in the user program
with the SFCs 55 to 57 (refer to /235/) .
The parameters for the 2 parameterization alternatives are subdivided into:
Static parameters
Dynamic parameters
Table 2-1 below shows the characteristics of static and dynamic parameters.
Table 2-1 Static and dynamic parameters of SM 321; DI 4 x NAMUR
Parameter Set with CPU status
Static PG STOP
Dynamic PG STOP
Dynamic SFCs 55 to 57 in user
program
RUN
The SM 321; DI 4 x NAMUR features default settings for diagnostics,
interrupts etc. (see Table 2-2).
These default settings are applicable when the digital input module has not
been parameterized via STEP 7 .
The characteristics of the SM 321; DI 4 x NAMUR can be parameterized
with the following parameter blocks:
Basic settings
Diagnostics
Hardware interrupts
2-7