Beckhoff KL6581, Документация, Страница: 31 / 41

Programming
KL6581 and KL6583 31 Version: 2.0.0
Bit Name Description
SB.4 AddrConflict 1
bin
Address of a KL6583 doubly assigned
SB.3 Communication
Error
0
bin
Communication OK
1
bin
The KL6581 has not found a KL6583 that is ready for operation. Check the
cabling and the addresses.
SB.2 Buffer Full 1
bin
The internal data buffer has overflowed,
SB.1 RxS 1
bin
Toggle for the reception of data; if RxS <> RxC, then new data is present;
toggling the bit signals to the terminal that the data have been fetched.
SB.0 TxS 1
bin
Toggle for sending data; if TxC <> TxS, then data are transmitted from the
KL6851 to the KL6853.
Register communication
Control byte for register communication
The control byte (CB) is located in the output image [ } 28] , 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 that you
- want to read with input data word
DataIN1 [
}
28] or
- want to write with output data word DataOUT1 [
}
28] .
Status byte for register communication
The status byte (SB) is located in the input image [ } 28] , and is transmitted from the 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
Acknowledgment 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.