BECKHOFF KL5121 - Manual (Page 15)

Data transfer, function
KL5121 15
Bit No. Meaning
Bit 0-5 000000-
111111 Address bits A0 to A5 of the output table
Bit 6 0/1 0: read
1: write
Bit 7 0/1 Table bit
This bit must be set for table accesses.
If the controller sees a falling edge in the terminal
here, evaluation of the output table is started, so
that, if sorting or other tasks are necessary, they will
be performed.
Status byte 1 Status byte 1 is transmitted from the terminal to the controller.
Bit No. Meaning
Bit 0-5 000000-
111111 Address bits A0 to A5 of the output table
Bit 6 0/1 Don't care
Bit 1 Acknowledge for table access
Output data word 1 Output data word AW1 returns the addressed table entry for a table
access.
Bit No. Meaning
Bit 0-15 Content of the addressed table entry
Input data word 1 Input data word EW1 is written into the table by a controller write access.
Bit No. Meaning
Bit 0-15 Entry in the output table
Output table The appropriate values for the corresponding function must be entered into
the output table (max. 60 switching values).
Index Entry
0 Number, N, of entries for the first output
1 Number, M, of entries for the second output
2 Number, O, of entries for the third output
3 Number, P, of entries for the fourth output
4 Switch value 1 channel 1
...
N+4 Switch value N channel 1
N+5 Switch value 1 channel 2
...
N+M+4 Switch value M channel 2
N+M+5 Switch value 1 channel 3
...
N+M+O+4 Switch value O channel 3
N+M+O+5 Switch value 1 channel 4
N+M+O+P+4 Switch value P channel 4