Beckhoff KL6224, Документация

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Access from the user program
KL6224 38 Version: 2.0.0
5.2 Control and status byte
Register communication
Control byte (for register communication)
The control byte (CB) is located in the output image [
}
34] , and is transmitted from the controller to the
terminal.
Bit CB.7 CB.6 CB.5 CB.4 CB.3 CB.2 CB.1 CB.0
Name RegAccess R/W Reg. no.
Key
Bit Name Description
CB.7 RegAccess 1
bin
Register communication switched on
CB.6 R/W 0
bin
Read access
1
bin
Write access
CB.5 to CB.0 Reg. no. Register number:
Enter the number of the
register [
}
39] that you want to read or write
here.
Status byte (for register communication)
The status byte (SB) is located in the input image [ } 34] , and is transmitted from terminal to the controller.
Bit SB.7 SB.6 SB.5 SB.4 SB.3 SB.2 SB.1 SB.0
Name RegAccess R/W Reg. no.
Key
Bit Name Description
SB.7 RegAccess 1
bin
Acknowledgement for register access
SB.6 R 0
bin
Read access
SB.5 to SB.0 Reg. no. Number of the register that was read or written.
Process data mode
Note
Control and status byte in process data mode
In process data mode the control and status bytes of the KL6224 currently have no addi-
tional function.
Control byte in process data mode
The control byte (CB) is located in the output image [
}
34] , and is transmitted from the controller to the
terminal.
Bit CB.7 CB.6 CB.5 CB.4 CB.3 CB.2 CB.1 CB.0
Name RegAccess - - - - - - -
Key
Bit Name Description
CB.7 RegAccess 0
bin
Register communication off (process data mode)
CB.6 to CB.0 - 0
bin
reserved