78
Process Image
WAGO-I/O-SYSTEM 750
750-464 2/4 AI RTD configurable
Manual
Version 1.0.1
7.3.6
Ni120 (Minco)
With the setting "Ni120 (Minco)", the I/O module converts the resistance
measured values of Ni120 sensors (Minco) and outputs them as temperature
values.
The temperature values are displayed at a resolution of 1 digit per 0.1 °C in one
word (16-bit). Temperature values below 0 °C are represented in two's
complement binary. As a result, 0 °C corresponds to the numeric value 0x0000
and 100 °C to the numeric value 0x03E8 (dec. 1000).
The possible numeric range corresponds to the defined temperature range of
-80 °C to +260 °C for Ni120 sensors (Minco).
Table 64: Process image for 750-464, Ni120 setting (Minco)
Temperature
°C
Resistance
Ω
Numeric value
1)
Status
byte
hex.
LED
error
AI 1, 2
Binary
Hex.
Dec.
---
< 9.00
'1111.1100.1110.0000'
0xFCE0
-800
0x51
on
Short circuit
2)
< -80.0
66.60
'1111.1100.1110.0000'
0xFCE0
-800
0x41
on
Underrange
3)
-80.0
66.60
'1111.1100.1110.0000'
0xFCE0
-800
0x00
off
-50.0
86.16
'1111.1110.0000.1100'
0xFE0C
-500
0x00
off
0.0
120.00
'0000.0000.0000.0000'
0x0000
0
0x00
off
50.0
157.75
'0000.0001.1111.0100'
0x01F4
500
0x00
off
100.0
200.64
'0000.0011.1110.1000'
0x03E8
1000
0x00
off
150.0
248.95
'0000.0101.1101.1100'
0x05DC
1500
0x00
off
200.0
303.45
'0000.0111.1101.0000'
0x07D0
2000
0x00
off
250.0
366.53
'0000.1001.1100.0100'
0x09C4
2500
0x00
off
260.0
380.31
'0000.1010.0010.1000'
0x0A28
2600
0x00
off
> 260.0
> 380.31
'0000.1010.0010.1000'
0x0A28
2600
0x42
on
Overrange
3)
---
> 5500.00
'0000.1010.0010.1000'
0x0A28
2600
0x62
on
Wire break
2)
1) Temperature values below 0 °C are represented in two's complement binary.
2) When short circuit and wire break monitoring is ON (see section "Behavior in the Event of an
Error")
3) When underrange / overrange limit is ON (see section "Behavior in the Event of an Error")
