System Modification In A Redundant System - Siemens SIMATIC ET 200iSP Operating Instructions Manual

Changing the parameter settings in RUN mode
Note the operator steps used for reassigning paramters in the function manual Modifying the
system during operation via CiR
14044916).
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) prior to changing the
settings otherwise diagnostic events exiting the state may no longer be signaled in some
situations. The effect is that the LEDs on the CPU, IM, or module stay lit even though the
reconfigured module is operating properly. If, this situation nevertheless arises, the module
must be removed and reinserted.
Table 3-8
Electronic module
8 DI NAMUR
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
4 AI I 2WIRE HART
4 AI I 4WIRE HART
4 AI RTD
4 AI TC
4 AO I HART
3.12.2

System modification in a redundant system

Properties
Information on using this function in the redundant structure can be found in the S7-400H
automation system, fault-tolerance systems
view/en/1186523) manual and in the online help for the H option package for
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
(http://support.automation.siemens.com/WW/view/en/
Behavior of the inputs/outputs
Behavior of the inputs/outputs
They return the process value
that applied before the parame‐
ters were set. Inputs not affected
return their last valid value (with
value status).
They output the output value that
applied before the parameters
were set. Unaffected outputs re‐
turn their last valid value.
They return the process value
that applied before the parame‐
ters were set. Inputs not affected
return their last valid value.
They output the output value that
applied before the parameters
were set. Unaffected outputs re‐
turn their last valid value.
3.12 System configuration in RUN (CiR)
Points to note when changing
parameter settings
SF LED is lit.
If a diagnostic event was repor‐
ted before you started to reas‐
sign parameters, the SF LEDs
(on the CPU, IM or module) may
be lit even though the module is
operating properly and the diag‐
nostic event has been cleared.
● Only make new parameters
settings when there is no
diagnostic event pending, or
● Remove and insert module.
(http://support.automation.siemens.com/WW/
Configuration options
STEP 7 .
63