Siemens IM 155-6 PN ST Equipment Manual page 19

If there is no validity check of the shared device projects by the Engineering System,
note the following:
• Make sure the configurations are consistent. Assign each module or submodule to only
one IO controller. Multiple assignment causes errors because the module or submodule is
only available in the first controller.
• If you reconfigure the shared device configurations without the validity check mentioned
above, you must commission ET 200SP again. This means you must download the projects
of all involved IO controllers to the respective CPU again after reconfiguration. If
necessary, perform a POWER OFF/POWER ON of the interface module.
You can find more information on this topic in the STEP 7 online help and:
• As of STEP 7 V12, in the function manual PROFINET with STEP 7 V13
(http://support.automation.siemens.com/WW/view/en/49948856)
• As of STEP 7 V5.5 in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) system manual
Note
In the case of a shared device application, make sure that all controllers work with the same
send clock. If the controller does not have the same send clock, this results in communication
relationships not being set up.
If you set up all controllers in one project, the same send clock is ensured. Set the same send
clock for engineering in separate projects.
Submodules
The IM 155-6 PN ST interface module supports the division of I/O modules into up to 4
submodules. This allows parts of an I/O module to be separately configured and
parameterized.
You can assign each of these submodules to different IO controllers.
The following functions are only executed if you have configured submodule 1 during
configuration:
• Firmware update
• Write I&M data
• Calibration
• PROFIenergy
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
Equipment Manual, 10/2020, A5E03576904-AE
Product overview
2.2 Functions
17