Specifications

Analog Input Modules
90
31007715 6/2008
For example, if you use the Advantys configuration software to calibrate an offset of
+64 at 4 mA and a max count of 31 744 at 20 mA, the system could be represented
as follows:
Here are some current representations after calibration with offset and max count:
Offset and RTP:
The offset parameter is represented as a 15-bit + sign number. To access it using
RTP, write the following values to the RTP request block:
I
ai
Uncalibrated Data Offset Value Calibrated Data
signed 4 mA 64 64 0
20 mA 31 744 31 744 32 000
unsigned 4 mA 128 128 0
20 mA 63 488 63 488 64 000
Length 2
Index (low byte) 0x00
Index (high byte) 0x24
Sub-index 1 for channel 1
2 for channel 2
3 for channel 3
4 for channel 4
Data Bytes 2 (high byte) & 1 (low byte) -767 to +767 (0xFD01 to 0x02FF)
64
32 000
32 767
4mA
12 mA
20 mA
20.38 mA
31 744
c
a
l
i
b
r
a
t
e
d
u
n
c
a
l
i
b
r
a
t
e
d
V
n
I
ai
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com