Problem with FB223 and FB224 in Safety PLC

Hello,

I have a configuration like this:

1. CPU 416-3FS06-0AB0 (400 Safety)

2. IM 151-8FB01-0AB0 (ET200S Safety)

3. 158-0AD01-0XA0 (DP/DP Coupler)

I have made the configuration in both CPUs and every thing seems fine, everything on the DP/DP coupler is green.

In both PLCs I have put FB223 and FB224 communication block to exchange data. In the 400 I have everything ok, on the FB223 and FB224 there is no error, on the 300 on the FB224 (F_SNDDP) there is no error but on the FB223 (F_RCVDP) I have error=1 and DIAG: B#16#10 in HEX format.

The DP_DP and LADDR adresses are coresponding according to what is send in one CPU is recieve in another CPU and vise versa.

In attach I'm sending some pics from blocks online and HW configuration.

Thanks in advance

Hello,

anyone to have some suggestions?

Thanks

drozerce

Hello,

anyone to have some suggestions?

Thanks

 Dear drozerce,

I think, that the device with address 268 was not ready, when you started the communication (DIAG: bit 4 means "TIMEOUT")

Does the error disappear, if you set the ACK_REI-input (M222.1) to true?

Best regards,
yy1

Hello yy1,

thanks for your answer. Let me answer to your question: I set it M222.1 to 1, but nothing happened. I didn't know what is the problem.

I one case I switched LADDR addresses (so the Universal module with address 256 in PLC1 to communicate with Universal module with address 600 in PLC2) and in that case I had error on both blocks SEND and RECEIVE. After that I return the LADDR addresses as before (like shown in the screen shots that I sent before) and every thing was OK. I tried the communication, and every thing worked just fine.

But, still, I don't know why I had that error, what was the cause? Where to look for additional answer?

Thanks again,