IFM Electronic AC2616 Montageanleitung Seite 15

Analogue input module 2I, 0 ... 10 V - AC2617
Range
0 ... 10V
< 0 V
0 ... 10 V
10.001 V ... 10001 ... 11500
11.5 V
> 11.5 V
Transmission time of the analogue values
The transmission time of the analogue values depends on the conver-
sion time of the analogue signals into digital signals in the AS-i mod-
ule and on the transmission time via the AS-Interface.
The conversion time for 2 analogue input signals into digital signals is
120 ms. If the channel 2 is disabled, the conversion time for one chan-
nel is only 20 ms.
The transmission time of the 2 16-bit values via the AS-Interface ideal-
ly is 7 AS-i cycles per value. For a cycle time of 5 ms per AS-i cycle this
results in a transmission time of 2 x 7 x 5 ms = 70 ms via the AS-Inter-
face.
If the channel 2 is disabled, the transmission via the AS-Interface for
one channel requires 7 AS-i cycles. For a cycle time of 5 ms per AS-i
cycle this results in a transmission time of 1 x 7 x 5 ms = 35 ms via the
AS-Interface.
Thus the total transmission time for 2 analogue values ideally is 120 ms
(conversion time) + 70ms (transmission time) = 190 ms. If channel 2 is
disabled, the transmission time ideally is 20 ms + 35 ms = 55 ms.
Units
dec.
0000
0000 ... 10000 0000 ... 2710
2711 ... 2CEC
32767
Units LED
hex. analog
0000
7FFF flashes
Meaning
on outside range
on nominal range
on above nominal
range
outside range
15