BECKHOFF KL6071 - Manual (Page 9)

Terminal configuration
KL6071 7
3.3 Control und Status Byte
Control byte during process data exchange
The control byte is transmitted from the controller to the terminal. It can be
used
•
during process data exchange (REG = 0
bin
) or
•
in register mode (REG = 1
bin
).
Bit 7 6 5 4 3 2 1 0
Name REG=0 0 0 A4 A3 A2 A1 A0
Key
Bit Name Comment
7 REG 0 for Process data mode
6 0 reserved
5 0 reserved
4-0 A4-A0 Offset from where reading or writing is done.
The offset is calculated as follows:
(A4…A0) x 5
Status byte during process data exchange
The status byte is transferred from the terminal to the control system. It
acknowledges the bits of the control byte.
Bit 7 6 5 4 3 2 1 0
Name REG=0 0 CS_ST A4 A3 A2 A1 A0
Key
Bit Name Comment
7 REG 0 for Process data mode
6 0 reserved
5 CS_ST State of the CS Input
4-0 A4-0 Address bits 0 to 4