LIOLink Blocks portAddr

I am setting up a rf240R Siemens RFID Reader via IO Link and I am having trouble getting the "LIOLink_RF200_SwitchAntenna" block to enable the "done" bit. 

Inside of the block there is a OFFSET input where I am supposed to input the # of the first byte of the submodule to be read. I cannot seem to figure out what that number should be. I was hoping someone could help me figure out what this number should be. 

Just an FYI, I am going from a IO link master (not siemens) to a siemens switch into a profinet adapter that is connected to the main PLC

You have not stated how you know the DONE bit is not being enabled.

In most blocks with DONE bits, at least those with [asynchronous] communications, the outputs are typically only on for 1 PLC scan.

That means you and I never really see the DONE bit go true while online monitoring.

If you put a simple ADD block, adding 1 to a Done_Bit_Counter tag any time the DONE bit is true, you can see the counter counting - or not counting.

If the block output is generating an ERROR output, capture the STATUS to a global saved (perhaps even retained) tag so you can see what the last error reason was.

NCraven

I am setting up a rf240R Siemens RFID Reader via IO Link and I am having trouble getting the "LIOLink_RF200_SwitchAntenna" block to enable the "done" bit. 

Inside of the block there is a OFFSET input where I am supposed to input the # of the first byte of the submodule to be read. I cannot seem to figure out what that number should be. I was hoping someone could help me figure out what this number should be. 

I assume you have access to this document in your native language:

https://cache.industry.siemens.com/dl/files/887/73565887/att_1148412/v2/73565887_IOL_READ_WRITE_DATA_DOC_V3_5_en.pdf

Start with 0 for reading, and for writing, you need to know what bytes are mapped to what in your IO Link device(s).  Ideally, you write with an offset of 0, and write ALL outputs ALL the time.

I can imagine there could be a situation where you are sharing an IO link between multiple PLCs, and say PLC 1 has access to write the first half of the outputs and PLC 2 has access to write the last half of the outputs.  Then the length would be half the length of outputs, and the offset would be 0 for PLC 1 and the length for PLC 1 is also the offset for PLC 2 (since byte 0 counts).

Hi,

which mode of the reader are you using? Handling the antenna is quite simple. All you need to do is toggle a bit in output address space of the reader. Depending on the mode you're using, you can check the state of the antenna in the input address space.

UID mode: all input bytes are 0xFF when the antenna is off.

user data mode: the first byte of the input address space shows the state of the antenna in the 5th bit. (0: on; 1: off)