Westermo FD-10 - Manual (Page 27)

27 6630-2212
I/O module 1–2 > I/O module 2
Identifier [hex] Show the 16 word output Identifier in hex.
Can’t be changed.
7.3.2 PROFIBUS DP I/O data
Ordinary 16 word PROFIBUS DP I/O data are used by FD-10 N, including one data word
in and one out for the serial transfer control. Additional programming of the PROFIBUS
DP master to control I/O data transfer is needed, as defined below.
7.3.2.1 Output data word
Data transmitted from PROFIBUS DP master to FD-10 N.The first word is the serial
transfer command word and the remaining 2 to 15 words are ordinary output data
sent to addressed remote Fieldbus Adapter.
Output word 1 high byte (bit 15..8) is the serial transfer command byte,
with following content:
EN ENable FD-10 (bit15).
This bit must always be set high (1) for normal operation.
When set the FD-10 indicates data set ready by the EN bit being set in the
Input status word. EN bit set to low (0) disable FD-10.
SDO Send actual Data Once, toggle bit (bit 14).
When this toggle bit change state, the data words are taken from the DP data
words and transmitted directly over the serial transfer interface of FD-10.
GTL Get TeLegram, toggle bit (bit 13).
When this toggle bit change state, the received serial transfer frame will be set
in the PROFIBUS DP input data.
CNF CoNFiguration mode (bit 12).
For testing purposes only.
This bit is set low (0) during normal operating mode of FD-10.
This bit is set high (1) in order to switch the FD-10 over from
normal operating mode to configuration mode.
RES RESet read back status, toggle bit (bit 11).
When this toggle bit change state, it will reset read back status ACK, NAK and
TO also in all data in words.
Word 15 High byte 8 7 Low byte 0
1 EN SDO GTL CNF RES – – – Transfer slave address in range 0–63
2 Out data word 1
… … …
… … …
16 Out data word 15