Specifications

DI 16x24VDC HF Digital Input Module (6ES7521-1BH00-0AB0)
14 Manual, 07/2014, A5E03485952-AD
Parameters/address space
4
4.1
Parameters
DI 16x24VDC HF parameters
When you assign the module parameters in STEP 7, you use various parameters to specify
the module properties. The following table lists the configurable parameters. The effective
range of the configurable parameters depends on the type of configuration. The following
configurations are possible:
● Central operation with a S7-1500 CPU
● Distributed operation on PROFINET IO in an ET 200MP system
● Distributed operation on PROFIBUS DP in an ET 200MP system
For parameter assignment in the user program, the parameters are transferred to the
module using the WRREC instruction (parameter reassignment in RUN) and data records;
see chapter Parameter assignment and structure of the parameter data records (Page 31).
Table 4- 1 Configurable parameters and their defaults
Parameters
Range of values
Default
Parameter
assignment
in RUN
Scope with configuration software,
e.g., STEP 7 (TIA Portal)
GSD file
PROFINET IO
GSD file
PROFIBUS DP
Diagnostics
• Missing
supply voltage L+
Yes/No No Yes Channel* Channel group**
• Wire break
Yes/No No Yes Channel Channel group**
Input delay
0.05 ms, 0.1 ms,
0.4 ms, 1.6 ms,
3.2 ms, 12.8 ms,
20 ms
3.2 ms;
for isoch-
ronous
mode
0.05 ms
(cannot
be
changed)
Yes Channel Channel group**