Siemens SIMATIC ET 200iSP User Manual

Reaction of the I/O to parameter reassignment in RUN
When changing the parameter settings for certain modules (see table), make sure that there is
no diagnostic event pending for this module (for example wire break signal) prior to changing
the settings otherwise diagnostic events exiting the state may no longer be signaled in some
situations. The e󹪜ect is that the LEDs on the CPU, IM, or module stay lit even though the
recon󹪝gured module is operating properly. If, this situation nevertheless arises, the module
must be pulled and plugged again.
Table 4-9 Behavior of the inputs/outputs
Electronic module Behavior of the inputs/outputs Points to note when
changing parameter
settings
8 DI NAMUR They return the process value that
applied before the parameters were
set. Inputs not a󹪜ected return their
last valid value (with value status).
SF LED is lit.
If a diagnostic event was
reported before you star‐
ted to reassign parame‐
ters, the SF LEDs (on the
CPU, IM or module) may
be lit even though the
module is operating prop‐
erly and the diagnostic
event has been cleared.
• Only make new pa‐
rameters settings
when there is no diag‐
nostic event pending,
or
• Pull and plug module.
4 DO DC23.1V/20mA shut down "H"/
"L"
4 DO DC17.4V/27mA shut down "H"/
"L"
4 DO DC17.4V/40mA shut down "H"/
"L"
2 DO Relay UC60V/2A
They output the output value that
applied before the parameters were
set. Una󹪜ected outputs return their
last valid value.
4 AI I 2WIRE HART
4 AI I 4WIRE HART
4 AI RTD
4 AI TC
They return the process value that
applied before the parameters were
set. Inputs not a󹪜ected return their
last valid value.
4 AO I HART They output the output value that
applied before the parameters were
set. Una󹪜ected outputs return their
last valid value.
4.13.2 System modi󹪝cation in a redundant system
Properties
For information on using this function in the redundant con󹪝guration, refer to the "S7-400H
automation system, high availability systems (
https://support.industry.siemens.com/cs/ww/en/
view/1186523)" manual and the online help of the H option package for STEP 7.
Con󹪝gurations (principle)
4.13 System con󹪝guration in RUN (CiR)
ET 200iSP
86 Operating Instructions, 11/2022, A5E00247483-AK

Siemens SIMATIC ET 200iSP Specifications

General

Brand	Siemens
Model	SIMATIC ET 200iSP
Category	I/O Systems
Language	English