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Response times
5.1
Response times of PROFINET IO
Calculating the response time of the IM151-3 PN HIGH FEATURE
Use the following formula for an approximate calculation of the ET 200S response time.
Response time [μs]: 390
+ Maximum of (380 + 9m + 11do) or (24m + 40ai + 80t)
+ Maximum of (120 + 9m) or (24 + 9do + 40ao + 80t)
m
Total number of all modules (power modules, digital electronic modules, analog electronic modules, technological
modules)
do
Sum total of all digital output modules
di
Sum total of all digital input modules
ao
Sum total of all analog output modules
ai
Sum total of all analog input modules and electronic modules 1SSI fast, 1COUNT fast
t
Number of all technology modules (except 1SSI fast, except 1COUNT fast)
Note
The formula specified applies to cyclic data transfer. The following requirements must be
fulfilled:
No diagnostics are reported.
No process interrupts are reported.
No data record traffic to I/O modules.
5.2
Response time for digital input modules
Input delay
The reaction times of the digital input modules depend on the input delay.
Reference
Information on the input delays can be found in the technical data of the
relevant digital electronic module.
Interface module IM151-3 PN HIGH FEATURE (6ES7151-3BA23-0AB0)
Manual, 08/2010, A5E01584258-04
5
manual
for the
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