I have a CPU315F calling a FB223 (F_SENDDP) with the purpose of writing safe data to a DP/DP coupler (configured according to manual).

The problem is that, no matter what I do, when the function is called, the CPU turns into STOP mode with the following message:

Safety program: Internal Cpu error
Internal error information: 201:0000
Instance DB no. of the causing F system block: 888

"888" is the instance DB I used for F_SENDDP. I tried changing parameters passed to the FB (even tried a call passing only DP_DP_ID, LADDR and TIMEOUT) but without success.
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On a CPU416F I am using calls to F_SENDDP and I have no problems (even if the DP/DP coupler is disconnected the cpu does NOT turn into stop mode).

ANY IDEA?

Thanks in advance

• try to delete and recreate the IDB of the F_SEND-block
• delete all system-created safety-blocks and generate the program again
• check, if you have accesses from the safety-program to your safety-program ('edit safety program' -> 'check for accesses from the standard user program' at the 'v' right beside the 'compile'-button)

Hope this helps!

Best regards,
yy1