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IFM Electronic AS-interface AC2518 Notice De Montage page 11

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Analogue output module 0 ... 10V - AC2519
Range
0 ... 20mA
0mA ... 20mA
20.001mA ...
23mA
> 23mA
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
< 1ms. The transmission time of the 2 16-bit values via the AS-inter-
face ideally is 7 AS-i cycles per value. For a cycle time of 5ms per AS-i
cycle this results in a transmission time of 2 x 7 x 5ms = 70ms via the
AS-Interface.
Thus the total transmission time for 2 analogue values ideally is 1ms
(conversion time) + 70ms (transmission time) = 71ms.
Example: Transmission time of 4 analogue channels
The conversion time for 4 analogue input signals into digital signals is
< 1ms. The transmission time of the 4 16-bit values via the AS-inter-
face ideally is 7 AS-i cycles per value. For a cycle time of 5ms per AS-i
cycle this results in a transmission time of 4 x 7 x 5ms = 140ms via the
AS-Interface.
Thus the total transmission time for 4 analogue values ideally is 1ms
(conversion time) + 140ms (transmission time) = 141ms.
Units
dec.
0000 ... 20000
20001 ... 23000
> 23000
Units
LED AO1...AO4
hex.
0000 ... 4E20
4E21 ... 59D8
> 59D8
analogue
on
nominal range
on
above nominal
flashes
outside range
Meaning
range
11
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Ce manuel est également adapté pour:

As-interface ac2519