28
6630-2212
Output word 1 low byte (bit 7..0) is the serial transfer address, with following content:
Transfer slave address of the Fieldbus Adapter to which this frame will be sent.
Serial transfer slave address, is in the range 0 to 64.
Output word 2 to 16 is the output data, with following content:
Word 2 Output data word 1
Word 3
Output data word 2
.........
........
Word 16 Output data word 15.
7.3.2.2 Input data word
Data is transmitted from the FD-10 N to the PROFIBUS DP master.The first word is the
added status word and the remaining 2 to 15 words are ordinary input data received
from the input word transfer slave addressed Fieldbus Adapter.
Input word 1 high byte (bit 15..8) is the serial transfer status byte, with following content:
ST
STatus of serial transfer command FD-10 (bit15).
Set to high (1) when the received command has been accepted by the FD-10.
Set to low (0) if the received command has not been accepted.
DEX
Data EXist (bit 14).
Set to high (1) when correct data is located in PROFIBUS DP
input data.
DV
Data Valid toggle bit (bit 13).
This toggle bit change state, when the received serial transfer
frame data has been set in the PROFIBUS DP input data.
NAK
No AcKnowledge (bit 12).
Set to high (1) when last transmitted serial transfer frame to a remote
FD-10 resulted in a received no acknowledge (NAK).
ACK
ACKnowledge of serial transfer (bit 11).
Set to high (1) when last transmitted serial transfer frame to a remote
FD-10 resulted in a received acknowledge (ACK).
TO
Time Out of serial transfer (bit 10).
Set to high (1) when last transmitted serial transfer frame to a remote
FD-10 has not resulted in any received ACK or NAK
within “Max time to acknowledge frame”.
Input word 1 low byte is the serial transfer address, with following content:
Transfer slave address of the Fieldbus Adapter from which this received
frame has been transmitted, only valid when DEX is
high (1). Serial transfer slave address, in the range 0 to 64.
Word
15
High
byte
8
7
Low byte
0
1
ST
DEX
DV
NAK ACK
TO
–
–
Transfer slave address in range 0–63
2
In word 1
…
…
…
…
16
In word 15
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