BECKHOFF KL3041 - Manual (Page 17)

Register Description
KL304x and KL305x 15
Control and Status byte
Control byte for process
data exchange Gain and
offset compensation The control byte is transmitted from the controller to the terminal. It can be
used
- in register mode (REG = 1
bin
) or
- during process data exchange (REG = 0
bin
).
The control byte can be used to carry out gain and offset compensation for
the terminal (process data exchange). This requires the code word to be
entered in R31. The gain and offset of the terminal can then be
compensated.
The parameter will only be saved permanently once the code word is reset!
Control byte:
Bit 7 = 0
bin
Bit 6 = 1
bin
: Terminal compensation function is activated
Bit 4 = 1
bin
: Gain compensation
Bit 3 = 1
bin
: Offset compensation
Bit 2 = 0
bin
: Slower cycle = 1000 ms,
1
bin
: Fast cycle = 50 ms
Bit 1 = 1
bin
: up
Bit 0 = 1
bin
: down
Status byte for process
data exchange The status byte is transmitted from the terminal to the controller. The status
byte contains various status bits for the analog input channel:
Status byte:
Bit 7 = 0
bin
Bit 6 = 1
bin
: ERROR - general error bit
Bit5 | Bit4
0
bin
| 0
bin
: Limit value 2 not activated
0
bin
| 1
bin
: Process data less than limit value 2
1
bin
| 0
bin
: Process data greater than limit value 2
1
bin
| 1
bin
: Process data equal limit value 2
Bit3 | Bit2
0
bin
| 0
bin
: Limit value 1 not activated
0
bin
| 1
bin
: Process data less than limit value 1
1
bin
| 0
bin
: Process data greater than limit value 1
1
bin
| 1
bin
: Process data equal limit value 1
Bit 1 = 1
bin
: Over range
Bit 0 = 1
bin
: Under range