11
UK
8 Measuring range
►
The measuring ranges, the states of the LEDs and their meaning are indicated
in the following tables�
8.1 Analogue module AC3218
Range
0...20 mA
Units
dec.
Units
hex.
LEDs
O1...O4
analo-
gue
Meaning
0���20 mA
0000���20000
0000���4E20
on
nominal range
20�001��� 23 mA
20001���23000 4E21���59D8
on
above nominal
range
> 23 mA
> 23000
> 59D8
flashing
overflow
8.2 Analogue module AC3219
Range
0...10 V
Units
dec.
Units
hex.
LEDs
O1...O4
analo-
gue
Meaning
0 ���10 V
0000���10000
0000���2710
on
nominal range
10�001���11�5 V
10001���11500 2711���2CEC
on
above nominal
range
> 11�5 V
> 11500
> 2CEC
flashing
overflow
8.3 Transmission time of the analogue values
The transmission time of the analogue values depends on the conversion
time of the digital signals into analogue signals in the AS-i module and on the
transmission time via the AS-Interface�
The conversion time of the digital signals is approx� 1 ms�
The transmission time of the 4 16-bit values via the AS-interface ideally 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 4 x 7 x 5 ms = 140 ms via the AS-Interface�
Thus the total transmission time for 4 analogue values ideally is approx� 1 ms
(conversion time) + 140 ms (transmission time) = approx� 141 ms�
