Siemens SIMATIC FC 45 Function Manual page 116

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Programming the MOBY-ASM on PROFIBUS
B.1 Programming the MOBY-ASM on PROFIBUS DP-V1
The user must evaluate the acknowledgement state with higher priority. I.e. when the user
wants to send a telegram to the ASM but a telegram from the ASM is waiting to be fetched at
the same time, the telegram from the ASM must be fetched first.
Both the command and the acknowledgment state are coded in 2 bits each. Both states are
stored in a byte (see Section "Cyclic control word between master and MOBY-ASM").
B-4
Function manual, Release 03/2006 , J31069-D0167-U001-A2-7618
FC 45

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