24
ifm
Device Manual Supplement: Acyclic data records and Command interface (AC14 and AC4S)
2017 / 09
Acyclic data records
3.9
DS8 – Status flags of analogue output data of the slaves 1...31
8768
Offset
Word no.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
reserved
1
Status of the analogue output data of single slave 1 or of (slave 1A and slave 1B)
2
Status of the analogue output data of single slave 2 or of (slave 2A and slave 2B)
...
...
30
Status of the analogue output data of single slave 30 or of (slave 30A and slave 30B)
31
Status of the analogue output data of single slave 31 or of (slave 31A and slave 31B)
Details of the words shown above:
Offset
Word no.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
n
--
TOB
--
TOA
--
OVB
--
OVA
reserved
Legend:
OVx
output valid
1 bit
channel-independent bit "output data valid" from the slave:
CTT1:
0 = more than 3.5 s have elapsed since the last update of the output
values
1 = slave requests new output data within the next 3 s
CTT2…CTT5:
0 = slave receives no new output data
1 = slave receives new output data
Only valid for analogue
out
put slaves.
For
in
put slaves set OVx = "0"!
TOx
transfer from the slave
(transfer output)
1 bit
from master profile M4 onwards:
0 = slave receives output data as a value
(15 bits long, plus sign)
1 = slave receives output data as a bit pattern
(16 bits long, no sign)
