Siemens SIMATIC S7-1500 Manual page 24

Parameters / address space
4.3 Address space
You deselected the "Port configuration without S7-PCT" check box in the configuration of the
IO-Link master in STEP 7.
Procedure
You configure the IO-Link Master ports with the Port Configuration Tool S7-PCT, V3.5 SP1 or
higher. In doing so, select the IO-Link device from the device catalog of S7-PCT and assign the
device to an IO-Link port.
Port Qualifier Information (PQI)
You can activate the Port Qualifier Information (PQI) for your IO-Link Master.
NOTE
Port Qualifier Information (PQI)
If you have activated the Port Qualifier Information (PQI), it is always transferred with the size
1 byte together with the input data of the IO-Link device.
PQI is not available for 8 bytes input / 8 bytes output.
The figure below shows the structure of the PQI byte.
Figure 4-1 Structure of the PQI byte
Description of the PQI byte:
Name
Device availability
Device error
Port Qualifier
24
Value Meaning
0 IO-Link device is not available
1 IO-Link device is in the "Preoperate" or "Operate" state
0 No error
1 An error or warning has occurred.
0 IO data is not valid
1 IO data is valid
Communication module IO-Link Master CM 8xIO-Link (6ES7547-1JF00-0AB0)
Equipment Manual, 08/2022, A5E45488510-AB