Siemens IM 155-6 PN ST Equipment Manual page 18

Product overview
2.2 Functions
Device replacement with topological configuration
IO devices with this function can be replaced in a simple manner:
• The device name does not have to be assigned with the programming device.
The replacement IO device is assigned the device name by the IO controller and not by the
programming device. The IO controller uses the configured topology and the neighboring
relationships determined by the IO devices for this purpose. All involved devices must support
the LLDP protocol (Link Layer Discovery Protocol). The configured target topology must
match the actual topology.
If the IO devices were already used in another configuration, reset them to factory settings
before reusing them. You can find information on this in the ET 200SP distributed I/O system
(http://support.automation.siemens.com/WW/view/en/58649293) system manual.
You can find more information on this topic in the STEP 7 online help and:
• As of STEP 7 V12 in the PROFINET with STEP 7 V13
(http://support.automation.siemens.com/WW/view/en/49948856) function manual
• As of STEP 7 V5.5 in the PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127) system manual
Replacement of an IM 155-6 PN ST
In a replacement scenario, you reset an IO device that is already in operation to the as-
delivered state using "Reset to factory settings". You can find more information in the ET
200SP distributed I/O system
(http://support.automation.siemens.com/WW/view/en/58649293) system manual.
Media redundancy (MRP)
Function for safeguarding communication and plant availability. A ring topology ensures that
an alternative communication path is made available if a transmission route fails.
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
Shared device
IO device which makes its data available to multiple IO controllers.
The interface module supports shared device at submodule level.
16
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
Equipment Manual, 10/2020, A5E03576904-AE