Hello All,

I have a CP343-1 as a profinet controller connected to 4 IM153-4 IO devices. The digital inputs are 40 bytes and the digital outputs are 4 bytes. When I use FC11 and FC12 I did the following:

After downloading the program to the CPU, the CP343-1 and the IM153-4 modules give BF and SF red LEDs, I checked the FC11 and FC12 but I got no errors. CHECK_IOCS and CHECK_IOPS show value 1.

Is there something missing in calling the two functions?

Can I use P#Q0.0 Byte 4 in the SEND and P#Q40.0 Byte 40 in the RECV?

Thanks in advance.

hi BeemBoss,

for the usage of FC11 and FC12 I recommend you to use the following FAQ:

How do you program communication blocks FC11 and FC12 for the PROFINET IO controller?

But because of BF and SF-LED i think there is an other Problem. Did you assign an IP and a name to your IM153? Did you have a look in online-diagnostic what the devices are complaining
about?

hope this helps,

regards,

Hi,

Thanks for your reply.

Yes I assigned an IP address and name for each IM153-4 device.

I finally solved the problem by setting the "MODE" feild in FC11 and FC12 to B#16#80 and then I changed it back to B#16#0. It is somehow strange, but finally I got it work :)

Best Regards,