Siemens SIMATIC PCS 7 Operation And Maintenance page 74

AS and OS expansions
7.1 Changes to the AS configuration
Each PROFIBUS I/O expansion made during operation reduces the set size incrementally.
At the next scheduled AS STOP, the size of the placeholders can be adjusted to new target
values, as long as it will not violate the system limits for the CPU and PROFIBUS.
Project phase
Engineering phase
Ongoing operation
Maintenance down-
time
Note
The changes to the configuration for a standard AS are only available after the "Enable CiR"
option is set in HW Config for a respective DP master system and after the configuration has
been loaded in STOP operating mode.
Application field
Typical cases of configuration changes on a standard AS include:
● Adding a DP slave or PA slave with the next highest bus address.
● Adding a module to the first free slot at the end of a modular station, e.g. ET 200M.
● Reassigning parameters for modules within a modular station, e.g. ET 200M (based on
the functions of the module in use).
● Removing a DP slave or PA slave with the next highest bus address.
● Removing the last configured module in a modular station, e.g. the ET 200M.
You can find an overview of all supported configuration changes in the manual titled
"SIMATIC Process Control System PCS 7 Engineering System"
(https://support.industry.siemens.com/cs/ww/en/view/109746533).
74
Steps
Design of the configuration including activation of CiR
capability and setting the CiR reserve according to the
expansions planned until the next downtime.
Adding new stations/modules using the CiR reserve
•
Reassignment of parameters for existing sta-
•
tions/modules
Resetting of CiR reserve according to the expansions
planned until the next downtime.
Loading Frequency
capacity
Via STOP Only required once
In RUN As often as desired until
CiR reserve is exhausted
Via STOP Required after every
change to the CiR reserve
Compendium Part D - Operation and Maintenance (V9.0)
Operating Manual, 02/2018, A5E43228948-AA