WAGO-I/O-SYSTEM 750
Commissioning
57
750-464 2/4 AI RTD configurable
Manual
Version 1.0.1
Table 48: "Channel" parameters
Selection box
Possible settings
Sensory type
(750-464)
Pt100 (IEC 751)*, Ni100 (DIN 43760), Pt1000 (IEC
751), Pt500 (IEC 751), Pt200 (IEC 751), Ni1000 (DIN
43760), Ni120 (Minco), Ni1000 (TK 5000),
Potentiometer,
Resistance measurement 10 Ω … 5000 Ω, Resistance
measurement 10 Ω … 1200 Ω
Sensor type
(750-464/000-020)
NTC 10 k
Ω*, NTC 20 kΩ,
NTC-Thermokon 10 k
Ω
Connection type
2-wire
2-wire connection technology
3-wire
3-wire connection technology
(not for 750-464 in operating mode "4-
channel"
not for 750-464/000-020)
Watchdog Timer
Off
The Watchdog timer is not active. The
green LEDs illuminate continuously.
On*
The Watchdog timer is active. If no
process data is exchange with the bus
coupler for 100 ms, the green LEDs go
out.
Mean value filter
Off
The mean value filter is switched off.
On
The mean value filter is switched on. To
reduce the digital noise, the I/O module
uses a software-based mean value filter
(median filter). A resistance value is
assumed to be constant if the voltage
drop considered for the measurement
differs by less than the specific (very
small) value by the resistance applied in
the circuit. It is recommended to always
leave the mean value filter on for each
channel.
Process Data
Representation
2nd
complement
Two's complement representation
Amount/
leading sign
Representation as an amount with leading
sign
