Personal Computer User Manual

Technical data of CPU 31xC
6.6 Technical data of the integrated I/O
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
6-39
6.6.3 Configuration
Introduction
You configure the integrated I/O of CPU 31xC with STEP 7. Always make these settings
when the CPU is in STOP. The generated parameters are downloaded from the PG to the
S7-300 and written to CPU memory .
You can also choose to change the parameters at SFC 55 in the user program (see the
Reference Manual
System and Standard Functions ). Refer to the structure of record 1 for
the respective parameters.
Parameters of standard DI
The table below gives you an overview of the parameters for standard digital inputs.
Table 6-7 Parameters of standard DI
Parameters Value range Default Range of efficiency
Input delay (ms) 0,1/0,5/3/15 3 Channel group
The table below gives you an overview of the parameters when using digital inputs as
interrupt inputs.
Table 6-8 Parameters of the interrupt inputs
Parameters Value range Default Range of efficiency
Interrupt input Disabled /
positive edge
disabled digital input
Interrupt input Disabled/
negative edge
disabled digital input