Westermo FD-10 - Manual (Page 24)

24 6630-2212
CNF CoNFiguration mode (bit 12).
For testing purpose only.
This bit is set low (0) during the normal operating mode of the FD-10.This bit
is set high (1) in order to switch the FD-10 over from normal operating mode
to configuration mode via PROFIBUS DP.
RES RESet read back status, toggle bit (bit 11).
When this toggle bit change state, it will reset read back status of ACK,TO
and all data input words.
Out 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 shall be
sent. Serial transfer slave address, in range 0 to 254.
Out word 2 to 65 is the output data, with following content:
Word 2 High: Output byte 1 Low: Output byte 2
Word 3 High: Output byte 3 Low: Output byte 4
......... ........ ......
Word 65 High: Output byte 127 Low: Output byte 128.
7.2.2.2 Input data word
Data is transmitted from the FD-10 A to the PROFIBUS DP master.The first word is the
added status word and the remaining 2 to 65 words are ordinary input data received
from the output word addressed remote 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 high (1) when the received command has been accepted by the FD-10. Set
low (0) if the received command has not been accepted.
DV Data Valid (bit 13).
For testing purpose only.
Acknowledgement of the command CNF.
ACK ACKnowledgement of serial transfer (bit 11).
Set high (1) when serial transfer sent output data to a remote FD-10 has
resulted in a received frame with input data from the remote FD-10.
TO Time Out received serial transfer (bit 10).
Set high (1) when the last serial transfer of output data to a remote FD-10 has
not resulted in any received frame within 1500 ms.
In word 1 low byte (bit 7..0) is not used.
In word 2 to 65 is the input data, with following content:
Word 15 High byte 8 7 Low byte 0
1 ST – DV – ACK TO – – – – – – – – – –
2 In data word 1, high byte In data word 1, low byte
… … …
… … …
65 In data word 64, high byte In data word 64, low byte