Control And Status Bytes - Beckhoff KL4414 Documentation

Access from the user program
7.3

Control and status bytes

Channel 1
The control and status bytes for channel 1 are shown below.
Channel 2, channel 3 and channel 4
The control and status bytes of channels 2, 3 and 4 are structured like the control and status byte of channel
1.
Process data mode
Control byte 1 in process data mode
Control byte 1 (CB1) is located in the output image [} 33], and is transmitted from the controller to the
terminal. In process data mode it has no function.
Bit CB1.7 CB1.6
Name RegAccess -
Key
Bit Name
CB1.7 RegAccess
CB1.6 - CB1.0 -
Status byte 1 in process data mode
The status byte 1 (SB1) is located in the input image [} 33] and is transmitted from terminal to the controller.
In process data mode it has no function.
Bit SB1.7 SB1.6
Name RegAccess -
Key
Bit Name
SB1.7 RegAccess
SB1.6 - SB1.0 Error
Register communication
Control byte 1 in register communication
Control byte 1 (CB1) is located in the output image [} 33], and is transmitted from the controller to the
terminal.
Bit CB1.7 CB1.6
Name RegAccess R/W
Key
Bit Name
CB1.7 RegAccess
CB1.6 R/W
CB1.5 to CB1.0 Reg. no.
36
CB1.5 CB1.4
- -
Description
0 Register communication off (process data mode)
bin
0 reserved
bin
SB1.5 SB1.4
- -
Description
0 Acknowledgment for process data mode
bin
0 reserved
bin
CB1.5 CB1.4
Reg. no.
Description
1 Register communication switched on
bin
0 Read access
bin
1 Write access
bin
Register number:
Enter the number of the register that you
• want to read with input data word DataIN1 [} 33] or
• want to write with output data word DataOUT1 [} 33].
Version: 3.0.0
CB1.3 CB1.2
- -
SB1.3 SB1.2
- -
CB1.3 CB1.2
KL4414, KL4418, KL4424, KL4428
CB1.1 CB1.0
- -
SB1.1 SB1.0
- -
CB1.1 CB1.0