Good day everyone,

I am currently trying to write some data to a device via an ET 200SP CM 4xIO-Link (6ES7 131-6BH01-0BA0). I can read data by using the normal way %IWxxx or by using S7-PCT and creating an UDT based on the IODD file.

Where I am having problems right now is with using the FB for IO-Link Devices to give commands to the devices.

Background: There are multiple remote IO's in my systeem. All have at least 1 ET 200SP. All ET 200SP are used to operate the same kind of device, PC-0724-800-0I1 from BLOCK.eu. Some ET 200SP only have one device, some have 4.

Those devices are 24VDC power supply with 8 channels. The purpose is that we can turn the channels ON/OFF from the HMI (I already have this 90% done).

I can turn channels ON/OFF with S7-PCT but can't do it with the FB, I don't know what I am missing. I setup the hwID, readWrite status, port, index, subindex (according to the manual). When I toggle execute bit it stops in step 2 according to the Diagnostic. Error code is telling me to look a the online diagnostic of the module. But that one is empty.

Softwares: Tia Portal V 18, S7-PCT V3.5 SP3 upd4.

Thank you.