Siemens SIMATIC PROFINET Function Manual page 142

Functions
5.3 Shared device
Value status (Quality Information, QI)
The meaning of the value status depends on the submodule to which it pertains.
With basic submodule (= 1st submodule), the "0" value status indicates that the value is
incorrect.
With MSO submodule (= 2nd to 4th submodule) the "0" value status indicates that the value
is incorrect or one of the following errors has occurred:
● The basic submodule parameters have not yet been assigned (not ready for operation).
● The connection between the IO controller and the basic submodule has been interrupted.
● The IO controller of the basic submodule is in STOP or POWER OFF state.
Configuring I/O modules with MSI/MSO submodules
Requirements
● Configuration software STEP 7 as of V13
● IO device supports MSI/MSO (for example IM 155-5 PN ST as of firmware version 2.0.0)
Procedure
1. In the network view of STEP 7, insert an IM 155-5 PN ST interface module as of V2.0.
2. Double-click the IO device.
You are now in the device view.
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PROFINET with STEP 7 V14
Function Manual, 09/2016, A5E03444486-AG