Siemens S7-MPI Pro

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Error handlingET/MT-3x6, ET/MT-2x8 series error messagesError Messages of Individual DriversSiemens S7-MPI Pro

 

The part supplementary data of error messages of MPI Pro driver may contain following data:

 

BCC is the received BCC byte in hexadecimal format
data_address is the start address of data accessed by the request in the 3964R address notation
data_size is the size of data accessed by the request expressed like a number of data objects (8-bit or 16-bit objects) in decimal format.
direction (from the point of view of the terminal) is:

- "rcv" for transmitting data from the slave to the master

- "snd" for transmitting data from the master to the slave

error_code is the error response code in hexadecimal format
station is the decimal station number of the accessed slave

 

The MPI Pro address notation is like this:

for D address area:  DB<data_segment>,DBB<data_object>
for E, A, M, Z, T address areas:  <address_area><data_object>

 

data_segment is an unsigned number in decimal format
data_object is an unsigned number in decimal format
address_area is one of characters: E, A, M, Z, T

 

 

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