Beckhoff KL4414, Documentation

Page: 36 / 45

Access from the user program
KL4414, KL4418, KL4424, KL4428 36 Version: 3.0.0
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 CB1.5 CB1.4 CB1.3 CB1.2 CB1.1 CB1.0
Name RegAccess - - - - - - -
Key
Bit Name Description
CB1.7 RegAccess 0
bin
Register communication off (process data mode)
CB1.6 - CB1.0 - 0
bin
reserved
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 SB1.5 SB1.4 SB1.3 SB1.2 SB1.1 SB1.0
Name RegAccess - - - - - - -
Key
Bit Name Description
SB1.7 RegAccess 0
bin
Acknowledgment for process data mode
SB1.6 - SB1.0 Error 0
bin
reserved
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 CB1.5 CB1.4 CB1.3 CB1.2 CB1.1 CB1.0
Name RegAccess R/W Reg. no.
Key
Bit Name Description
CB1.7 RegAccess 1
bin
Register communication switched on
CB1.6 R/W 0
bin
Read access
1
bin
Write access
CB1.5 to CB1.0 Reg. no. 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] .