225
ifm
Device Manual SmartSPS AC14 with EtherNet/IP interface (AC1421, AC1422), Firmware 3.1.2
2015-11-30
Appendix
Fieldbus EtherNet/IP
>
Details of the 5-word areas
8758
Offset
Word no.
bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
n
Analogue value channel 0 of single slave x or channel 0 of slave xA
n+1
Analogue value channel 1 of single slave x or channel 1 of slave xA
n+2
Analogue value channel 2 of single slave x or channel 0 of slave xB
n+3
Analogue value channel 3 of single slave x or channel 1 of slave xB
n+4
TIB
--
TIA
--
TOB
--
TOA
--
O3
V3
O2
V2
O1
V1
O0
V0
Legend:
On
overflow bit
1 bit
0 = data is in the valid range
1 = data is in the invalid range (especially in case of input modules when
the measuring range is not reached or exceeded)
TIx
transfer to the slave
(transfer Input)
1 bit
from master profile M4 onwards:
0 = slave transmits input data as a value
(15 bits long, plus sign)
1 = slave transmits input data as a bit pattern
(16 bits long, no sign)
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)
Vn
valid bit
1 bit
0 = values in channel n are invalid
1 = values in channel n are valid
Output data must be valid (Vn = 1) to be enabled in the AS-i slave!
