Beckhoff KL6781, Документация

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Access from the user program
KL6781 23 Version: 2.0.0
Complex evaluation in Motorola format
Address Input data Output data
Conditions Word offset High byte Low byte High byte Low byte
Complete evaluation: any
Motorola format: yes
Word alignment: any 0 SW CW
1 DataIN 0 DataIN 1 DataOUT 0 DataOUT 1
2 DataIN 2 DataIN 3 DataOUT 2 DataOUT 3
3 DataIN 4 DataIN 5 DataOUT 4 DataOUT 5
4 DataIN 6 DataIN 7 DataOUT 6 DataOUT 7
5 DataIN 8 DataIN 9 DataOUT 8 DataOUT 9
6 DataIN 10 DataIN 11 DataOUT 10 DataOUT 11
7 DataIN 12 DataIN 13 DataOUT 12 DataOUT 13
8 DataIN 14 DataIN 15 DataOUT 14 DataOUT 15
9 DataIN 16 DataIN 17 DataOUT 16 DataOUT 17
10 DataIN 18 DataIN 19 DataOUT 18 DataOUT 19
11 DataIN 20 DataIN 21 DataOUT 20 DataOUT 21
4.5 Register description
The registers are used for parameterization the M-bus master terminal. They can be read or written by
means of the register communication.
R0: Number of data bytes in the send buffer
Register R0 contains the number of data in the transmit FIFO.
R1: Number of data bytes in the receive buffer
Register R1 contains the number of data in the receive FIFO.
R6: Diagnostic register
Bit R6.15 R6.14 R6.13 R6.12 R6.11 R6.10 R6.9 R6.8
Name - - - - - - - -
Bit R6.7 R6.6 R6.5 R6.4 R6.3 R6.2 R6.1 R6.0
Name - - - BufferOverflow Overrun Framing error Parity error RxBufferOverflow
Key
Bit Name Description default
R6.15…5 - - reserved -
R6.4 BufferOverflow 1
bin
Buffer is full 0
bin
R6.3 Overrun 1
bin
An overrun error has occurred 0
bin
R6.2 Framing error 1
bin
A framing error has occurred 0
bin
R6.1 Parity error 1
bin
A parity error has occurred 0
bin
R6.0 RxBufferOverflow 1
bin
The receive buffer has overflowed, incoming data is lost. 0
bin
R7: Command register
The command register of the KL6781 is not used.
R8: Terminal type
The terminal name is contained in register R8:
KL6781: 0x1A7D (6781
dec
)