Westermo FD-40 - Manual (Page 20)

20 6630-2242
DPN PROFIBUS DP New (bit 11)
Normally not used, but can serve as support for evaluating the age of
wanted data.
Set to high (1) when a data block of the receive buffer has been fetched
and written into PROFIBUS DP in data. Automatically reset to low (0)
after timeout, the maximum time entered PROFIBUS DP in data will be
seen as new. This timeout is set by the parameter “Timeout, new
PROFIBUS DP data, by the configuration tool FD-Tool.
IL2 In data Length bit 2 (bit 10)
Bit 2 of the PROFIBUS DP in data length.
IL1 In data Length bit 1 (bit 9)
Bit 1 of the PROFIBUS DP in data length.
IL0 In data Length bit 0 (bit 8)
Bit 0 of the PROFIBUS DP in data length.
E.g. For 6 characters PROFIBUS DP in data will IL2, IL1 be high (1)
and IL0 low (0).
BLR Block Ready, toggle bit (bit 7)
This toggle bit change state, to acknowledge when the command RNB
or RRB (and CNF and RAK if any of these are used) have been finished
successfully.
WAK Write AcKnowledge, toggle bit (bit 6)
This toggle bit change state, to acknowledge the command CTB,
SDO or SFB.
ERR ERRor (bit 5)
Set to high (1) when the last received command or it’s parameters were
illegal.
Set to low (0) when receiving a correct command.
DEX Data EXist (bit 4)
Set to high (1) as long as the receive buffer contains data received by the
serial interface.
Reset to low (0) by the command Read Next Block (RNB) when the
receive buffer is empty.
Input word 1 (bit 3...0) are not used.
Input word 2 to 4 is the input data, with following content:
Word 2 High: In data byte 1 Low: In data byte 2
Word 3 High: In data byte 3 Low: In data byte 4
Word 4 High: In data byte 5 Low: In data byte 6