I/O Modules For Ni Resistance Sensors - WAGO 750-461 Manual

2.1.2.7.2 I/O Modules for Ni Resistance Sensors

Ni resistance sensors (Measuring range: -60 °C ... +250 °C)
750-461/000-004 Evaluation of Ni 100
750-461/000-005 Evaluation of Ni 1000
To evaluate the nickel resistance sensors, the measured values of the
resistance are converted and sent as temperature values.
All temperature values are represented in a standard numeric format. The
possible numerical range matches the defined temperature range of the Ni
sensors from -60 °C to +250 °C.
2.1.2.7.2.1 Ni 100
In the Ni 100 setting 750-461/000-004, the temperature values of the sensors
are represented with a resolution of 1 digit per 0.1 °C within a word (16 bits).
Thus, 0 °C corresponds to the numeric value 0x0000 and 100 °C to 0x03E8
(dec. 1000).
Temperature values below 0 °C are represented in two's complement binary
form.
The analog input modules transmits 16-bit measured values per channel as
well as 8 optional status bits to the coupler/controller.
perature
Broken wire against R
1) )
The measured value can exceed the range from decimal –600 to 2500 until the limitation
applies.
WAGO-I/O-SYSTEM 750
I/O Modules
Resis-
Tem-
tance
°C Ω
<-60.0 < 69.16
-60.0 69.16
-50.0 74.26
0.0 100.00
50.0 129.10
100.0 161.77
150.0 198.62
200.0 240.64
250.0 289.13
>250.0 >289.13
L
Temperature values below 0 °C are represented in two's complement binary form.
750-461, (/xxx-xxx) [2 AI Pt100/ RTD] • 17
750-461/000-004 (Ni 100)
Numerical value
binary
'1000.0000.0000.0001' 0x8001
'1111.1101.1010.1000' 0xFDA8
'1111.1110.0000.1100' 0xFE0C
'0000.0000.0000.0000' 0x0000
'0000.0001.1111.0100' 0x01F4
'0000.0011.1110.1000' 0x03E8
'0000.0101.1101.1100' 0x05DC
'0000.0111.1101.0000' 0x07D0
'0000.1001.1100.0100' 0x09C4
'0010.0001.0011.0100' 0x2134
'0010.0001.0011.0100' 0x2134
Process Image
Status-
1)
byte
hex. dec. hex.
-32767 0x41
-600 0x00
-500 0x00
0 0x00
500 0x00
1000 0x00
1500 0x00
2000 0x00
2500 0x00
8500 0x42
8500 0x42
LED
Error
AI 1,2
on
off
off
off
off
off
off
off
off
on
on