WAGO-I/O-SYSTEM 750
Process Image 33
750-461 2AI Pt100/RTD
Manual
Version 1.4.1
4.3
I/O Modules for Resistance Measurement
Table 24: I/O Modules for Resistance Measurement
750-461/000-002
Resistance measurement
Measuring range: 10
Ω
to 1.2 k
Ω
750-461/000-007
Resistance measurement
Measuring range: 10
Ω
to 5.0 k
Ω
2-conductor connection only!
Resistance measurement can only be performed in 2-wire connection
technology.
4.3.1
Resistance Measurement 10 Ohm to 1.2 kOhm
The 750-461/000-002 version outputs the resistance values of the sensors
directly. The resistance values are displayed at a resolution of 1 digit per 0.1
Ω
in
one word (16-bit). The possible numeric range corresponds to the defined
measurement range of 10
Ω
to 1.2 k
Ω
.
Table 25: Process Image (10
Ω
to 1.2 k
Ω
)
Resistance
Ω
Numeric value
Status
Byte
Hex.
LED
Error
AI 1, 2
Binary
Hex.
Dec.
0
'1110.1100.0000.0000'
0xEC00
−5120
00
OFF
10
'0000.0000.0110.0100'
0x0064
100
0x00
OFF
100
'0000.0011.1110.1000'
0x03E8
1000
0x00
OFF
200
'0000.0111.1101.0000'
0x07D0
2000
0x00
OFF
300
'0000.1011.1011.1000'
0x0BB8
3000
0x00
OFF
400
'0000.1111.1010.0000'
0x0FA0
4000
0x00
OFF
500
'0001.0011.1000.1000'
0x1388
5000
0x00
OFF
750
'0001.1101.0100.1100'
0x1D4C
7500
0x00
OFF
1000
'0010.0111.0001.0000'
0x2710
10000
0x00
OFF
1200
'0010.1110.1110.0000'
0x2EE0
12000
0x00
OFF
> approx. 1200
'0010.0001.0011.0100'
0x2134
8500
0x42
ON
“approx.” indicates non-calibrated data.