Sm 321; Di 16 X Dc 24 V - Parameters - Siemens SIMATIC Manual

Digital modules
3.11 Digital input module SM 321; DI 16 x 24 VDC; with hardware and diagnostic interrupts (6ES7321-7BH01-
0AB0)
Operating mode: Isochronous mode
Conditions of isochronous mode:
Filtering and processing time T
transfer buffer
(the value defined for TWE
includes an input delay time of
T
DPmin
Diagnostic interrupt
Note
In "isochronous" mode, the input delay is automatically set to 100 μs, regardless of the input
delay setting in STEP 7
Further information
You can find additional information on isochronous mode in the online help for STEP 7 and
in the operating instructions Distributed I/O System ET 200M.
(http://support.automation.siemens.com/WW/view/en/1142798)
3.11.2

SM 321; DI 16 x DC 24 V - Parameters

Programming
The general procedure of programming digital modules is described in the chapter
Programming digital modules (Page 58).
Parameters of SM 321; DI 16 x DC 24 V
The table below shows an overview of configurable parameters and their default settings for
SM 321; DI 16 x DC 24 V.
86
between reading actual values and writing these to the
WE
applies, irrespective of the enable status of diagnostics)
255 μs to 345 µs
100 µs
2.5 ms
max. 4 x T
DP
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ