Beckhoff KL6021-0023, Documentation

Page: 26 / 34

Access from the user program
KL6021-0023 and KL6023 26 Version: 2.0.0
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.
Process data during the register communication
The process data that is displayed is set to zero during the register communication!
Process data mode
Control byte in process data mode
The control byte (CB) is located in the output image [
}
25] , 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 - - - - - - NextTelegramReq
Key
Bit Name Description
CB.7 RegAccess 0
bin
Register communication off (process data mode)
CB.6 to
CB.1 - 0
bin
reserved
CB.0 NextTelegramReq 0/1
bin
By inverting this bit, the next EnOcean telegram in the input memory of
the KL6021-0023 is copied into the process data.
Status byte in process data mode
The status byte (SB) is located in the input image [
}
25] , 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 Error - - BufferFull NewTelegram SameTelegram NextTelegramAck
Key
Bit Name Description
SB.7 RegAccess 0
bin
Acknowledgment for process data mode
SB.6 Error 1
bin
The EnOcean telegram presently displayed in the process data of the
KL6021-0023 has an incorrect checksum.
SB.5 - 0
bin
reserved
SB.4 - 0
bin
reserved
SB.3 BufferFull 1
bin
The receive memory of the KL6021-0023 is full.
SB.2 NewTelegram 1
bin
There is at least one new EnOcean telegram in the receive memory of the
KL6021-0023.
SB.1 SameTelegram 1
bin
The data currently displayed belongs to the same EnOcean telegram as the
data previously displayed, because the telegram contains more than 4 data
bytes.
SB.0 NextTelegramAck 0/1
bin
Acknowledgement of having copied the EnOcean telegram into the process
data. The bit adopts the value of the control bit
CB.0 [
}
26] when the
telegram has been copied into the process data.