WAGO 750-461 User manual

Fieldbus Independent
I/O Modules
Analog Input Modules for RTD's
750-461, (/xxx-xxx)
Manual
Version 1.1.2

ii •General
WAGO-I/O-SYSTEM 750
I/O Modules
Copyright ©2006 by WAGO Kontakttechnik GmbH & Co. KG
All rights reserved.
WAGO Kontakttechnik GmbH & Co. KG
Hansastraße 27
D-32423 Minden
Phone: [phone] – 0
Fax: [phone] – 1 69
E-Mail: [email protected]
Web: http://www.wago.com
Technical Support
Phone: [phone] – 5 55
Fax: [phone] – 85 55
E-Mail: [email protected]
Every conceivable measure has been taken to ensure the correctness and com-
pleteness of this documentation. However, as errors can never be fully ex-
cluded, we would appreciate any information or ideas at any time.
E-Mail: [email protected]
We wish to point out that the software and hardware terms as well as the
trademarks of companies used and/or mentioned in the present manual are
generally trademark or patent protected.

Content •iii
WAGO-I/O-SYSTEM 750
I/O Modules
Content
1Important Comments ................................................................................. 4
1.1 Legal Principles........................................................................................4
1.1.1 Copyright.............................................................................................4
1.1.2 Personnel Qualification .......................................................................4
1.1.3 Intended Use ........................................................................................ 4
1.2 Symbols.................................................................................................... 5
1.3 Number Notation......................................................................................5
1.4 Safety Notes .............................................................................................6
1.5 Scope ........................................................................................................6
2I/O Modules ................................................................................................. 7
2.1 Analog Input Modules..............................................................................7
2.1.1 Overview Analog Input Modules for RTD's 750-461, (/xxx-xxx)...... 7
2.1.2 750-461, (/xxx-xxx) [2 AI Pt100/ RTD] .............................................8
2.1.2.1 View................................................................................................8
2.1.2.2 Variations........................................................................................8
2.1.2.3 Description......................................................................................9
2.1.2.4 Display Elements ..........................................................................10
2.1.2.5 Schematic Diagram.......................................................................11
2.1.2.6 Technical Data ..............................................................................12
2.1.2.7 Process Image ...............................................................................13
2.1.2.7.1 I/O Modules for Pt Resistance Sensors......................................... 14
2.1.2.7.1.1 Pt 100 .......................................................................................15
2.1.2.7.1.2 Pt 1000 .....................................................................................15
2.1.2.7.1.3 Pt 100 with Status Information for S5-FB250 in Data Word...16
2.1.2.7.2 I/O Modules for Ni Resistance Sensors........................................17
2.1.2.7.2.1 Ni 100.......................................................................................17
2.1.2.7.2.2 Ni 1000.....................................................................................18
2.1.2.7.3 I/O Modules for Resistance Measuring ........................................19
2.1.2.8 Adjustable 750-461/003-000 Variation ........................................20
2.1.3 750-461/020-000 [2 AI NTC 20kOhm].............................................22
2.1.3.1 View..............................................................................................22
2.1.3.2 Description....................................................................................23
2.1.3.3 Display Elements ..........................................................................24
2.1.3.4 Schematic Diagram.......................................................................24
2.1.3.5 Technical Data ..............................................................................25
2.1.3.6 Process Image ...............................................................................26

4 • Important Comments
Legal Principles
WAGO-I/O-SYSTEM 750
I/O Modules
1 Important Comments
To ensure fast installation and start-up of the units described in this manual,
we strongly recommend that the following information and explanations are
carefully read and abided by.
1.1 Legal Principles
1.1.1 Copyright
This manual is copyrighted, together with all figures and illustrations
contained therein. Any use of this manual which infringes the copyright
provisions stipulated herein, is not permitted. Reproduction, translation and
electronic and photo-technical archiving and amendments require the written
consent of WAGO Kontakttechnik GmbH & Co. KG. Non-observance will
entail the right of claims for damages.
WAGO Kontakttechnik GmbH & Co. KG reserves the right to perform
modifications allowed by technical progress. In case of grant of a patent or
legal protection of utility patents all rights are reserved by WAGO
Kontakttechnik GmbH & Co. KG. Products of other manufacturers are always
named without referring to patent rights. The existence of such rights can
therefore not be ruled out.
1.1.2 Personnel Qualification
The use of the product detailed in this manual is exclusively geared to
specialists having qualifications in PLC programming, electrical specialists or
persons instructed by electrical specialists who are also familiar with the valid
standards. WAGO Kontakttechnik GmbH & Co. KG declines all liability
resulting from improper action and damage to WAGO products and third party
products due to non-observance of the information contained in this manual.
1.1.3 Intended Use
For each individual application, the components supplied are to work with a
dedicated hardware and software configuration. Modifications are only
permitted within the framework of the possibilities documented in the
manuals. All other changes to the hardware and/or software and the non-
conforming use of the components entail the exclusion of liability on part of
WAGO Kontakttechnik GmbH & Co. KG.
Please direct any requirements pertaining to a modified and/or new hardware
or software configuration directly to WAGO Kontakttechnik GmbH & Co.
KG.

Symbols • 5
Intended Use
WAGO-I/O-SYSTEM 750
I/O Modules
1.2 Symbols
Danger
Always abide by this information to protect persons from injury.
Warning
Always abide by this information to prevent damage to the device.
Attention
Marginal conditions must always be observed to ensure smooth operation.
ESD (Electrostatic Discharge)
Warning of damage to the components by electrostatic discharge. Observe
the precautionary measure for handling components at risk.
Note
Routines or advice for efficient use of the device and software optimization.
More information
References on additional literature, manuals, data sheets and INTERNET
pages
1.3 Number Notation
Number Code Example Note
Decimal 100 normal notation
Hexadecimal 0x64 C notation
Binary '100'
'0110.0100'
Within ',
Nibble separated with dots

6 • Important Comments
Safety Notes
WAGO-I/O-SYSTEM 750
I/O Modules
1.4 Safety Notes
Warning
Switch off the system prior to working on bus modules!
In the event of deformed contacts, the module in question is to be replaced, as
its functionality can no longer be ensured on a long-term basis.
The components are not resistant against materials having seeping and
insulating properties. Belonging to this group of materials is: e.g. aerosols,
silicones, triglycerides (found in some hand creams).
If it cannot be ruled out that these materials appear in the component
environment, then additional measures are to be taken:
- installation of the components into an appropriate enclosure
- handling of the components only with clean tools and materials.
Attention
Cleaning of soiled contacts may only be done with ethyl alcohol and leather
cloths. Thereby, the ESD information is to be regarded.
Do not use any contact spray. The spray may impair the functioning of the
contact area.
The WAGO-I/O-SYSTEM 750 and its components are an open system. It
must only be assembled in housings, cabinets or in electrical operation
rooms. Access must only be given via a key or tool to authorized qualified
personnel.
The relevant valid and applicable standards and guidelines concerning the
installation of switch boxes are to be observed.
ESD (Electrostatic Discharge)
The modules are equipped with electronic components that may be destroyed
by electrostatic discharge. When handling the modules, ensure that the
environment (persons, workplace and packing) is well grounded. Avoid
touching conductive components, e.g. gold contacts.
1.5 Scope
This manual describes the Analog Input Modules 750-461, (/xxx-xxx)
Analog Input Modules for RTD's of the modular WAGO-I/O-SYSTEM 750.
Handling, assembly and start-up are described in the manual of the Fieldbus
Coupler. Therefore this documentation is valid only in the connection with the
appropriate manual.

Analog Input Modules • 7
Overview Analog Input Modules for RTD's 750-461, (/xxx-xxx)
WAGO-I/O-SYSTEM 750
I/O Modules
2 I/O Modules
2.1 Analog Input Modules
2.1.1 Overview Analog Input Modules for RTD's 750-461, (/xxx-xxx)
I/O Module 750-461 750-461/
000-002
750-461/
000-003
750-461/
000-004
750-461/
000-005
Function PT100/
RTD
Resistance
Measuring
10R-1k2
PT1000/
RTD
Ni 100/
RTD
Ni 1000/
RTD
Channels 2 2 2 2 2
Measuring
range
-200 °C ...
+850 °C
10 Ω...
1,2 kΩ
-200 °C ...
+850 °C
-60 °C ...
+250 °C
-60 °C ...
+250 °C
Counter depth 2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)
2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)
2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)
2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)
2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)
I/O Module 750-461/
000-006
750-461/
000-007
750-461/
000-200
750-461/
003-000
750-461/
020-000
Function PT100/
RTD/
high
precision
Resistance
Measuring
10R-5k0
PT100/
RTD/
with
status
informatio
ns
PT100/
RTD/
adjustable
NTC
20kOhm
Channels 2 2 2 2 2
Measuring
range
-200 °C ...
+850 °C
10 Ω...
5,0 kΩ
-200 °C ...
+850 °C,
-200 °C ...
+850 °C
-30 °C ...
+130 °C
Counter depth 2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)
2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)
2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)
2 x 16
bits Data
2 x 8 bits
Control/
Status
(option)
2 x 16 bits
Data
2 x 8 bits
Control/
Status
(option)

8 • 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]
View
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]
2-Channel Analog Input Module for RTDs
2- or 3-wire connection
2.1.2.1 View
+R1 +R2
13 14
C
D
B
A
RL1 RL2
SS
-R1 -R2
750-461
+R 2
Data contacts
Function AI 2
RL 2
Function AI 1
+R 1
Error AI 2
Error AI 1
RL 1
Shield
(screen)
Shield
(screen)
-R 2
-R 1
2-conductor 3-conductor
Fig. 2.1.2-1: 2-Channel Analog Input Module 750-461 g046100e
2.1.2.2 Variations
Item-No. Designation Description
Pt resistance sensors
750-461 2 AI PT100/RTD 2-Channel Analog Input Module, Pt 100
Measuring range: -200 °C ... +850 °C
750-461/000-003 2 AI PT1000/RTD 2-Channel Analog Input Module, Pt 1000
Measuring range: -200 °C ... +850 °C
750-461/000-006 2 AI PT100/RTD/
high precision
2-Channel Analog Input Module, Pt 100
Measuring range: -200 °C ... +850 °C
750-461/000-200 2 AI PT100/RTD/
With status information
2-Channel Analog Input Module, Pt 100
Measuring range: -200 °C ... +850 °C,
With status information for S5-FB250
Ni resistance sensors
750-461/000-004 2 AI Ni 100/RTD 2-Channel Analog Input Module, Ni 100
Measuring range: -60 °C ... +250 °C
750-461/000-005 2 AI Ni 1000/RTD 2-Channel Analog Input Module, Ni 1000
Measuring range: -60 °C ... +250 °C

750-461, (/xxx-xxx) [2 AI Pt100/ RTD] • 9
Description
WAGO-I/O-SYSTEM 750
I/O Modules
Item-No. Designation Description
Resistance measuring
750-461/000-002 2 AI Resistance
Measuring, 10R-1k2
2-Channel Analog Input Module,
Resistance measuring,
Measuring range: 10 Ω... 1,2 kΩ
750-461/000-007 2 AI Resistance
Measuring, 10R-5k0
2-Channel Analog Input Module,
Resistance measuring,
Measuring range: 10 Ω... 5,0 kΩ
Operating mode configurable with WAGO-I/O-CHECK
750-461/003-000 2 AI PT100/RTD/
Adjustable
2-Channel Analog Input Module,
Adjustable; Factory preset: Pt 100
Measuring range: -200 °C ... +850 °C
2.1.2.3 Description
The 750-461 analog input module and its 750-461/xxx-xxx variations allow
Pt or Ni Resistive Temperature Devices, RTDs, to be measured in the field.
It can also be used to measure resistances in the field.
Depending on the operating mode, the resistance value is converted to a
temperature or directly sent out by the module. A microprocessor within the
module is used for converting and linearizing the measured resistance value
into a numeric value proportional to the temperature of the selected resistance
sensor.
The operating mode of the 750-461/003-000 variation can be set by using the
WAGO-I/O-CHECK 2 start-up and diagnostic tool (Item No.: 759-302). The
default setting is Pt 100. After setting the parameters, the module behaves like
the version with the selected operating mode.
The operating mode of the 750-461 basic module described in this manual is
for a Pt 100 resistance sensor.
The analog input module is a 2- to 3-conductor device and has 2 input
channels. Two devices may be directly connected to the module.
For example, two 3-wire sensors can be connected either to +R1, RL1 and –
R1 or to +R2, RL2 and –R2.
For the connection of 2-wire sensors, putting of a bridge is necessary between
+R1 and RL1 or +R2 and RL2.
The shield (screen) is directly connected to the DIN rail. A capacitive
connection is made automatically when snapped onto the DIN rail.
An optocoupler is used for electrical isolation between the bus and the field
side.
The operational readiness and trouble-free internal data bus communication of
the channels are indicated via a green function LED. A broken wire, short-
circuit or overrange are indicated by a red error LED per channel.

10 • 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]
Display Elements
WAGO-I/O-SYSTEM 750
I/O Modules
After the error has been corrected, the module needs up to 4 seconds to output
a correct measured value, the module 750-461/000-006 needs up to 12
seconds.
Any configuration of the input modules is possible when designing the
fieldbus node. Grouping of module types is not necessary.
Attention
This module has no power contacts. For field supply to downstream I/O
modules, a supply module will be needed.
The analog input module 750-461 and its variations can be used with all
couplers/controllers of the WAGO-I/O-SYSTEM 750 (except for the economy
types 750-320, -323, -324 and -327).
2.1.2.4 Display Elements
LED Channel State Function
off No operational readiness or the internal data bus
communication is interrupted
A
green on Operational readiness and trouble-free internal data
bus communication
off Normal operation
750-461,
750-461/000-003,
-004, -005, -006
Overrange/underflow of the
admissible measuring range,
broken wire
750-461/000-200 Overrange of the admissible
measuring range, broken wire
750-461/000-002 Overrange/underflow of the
admissible measuring range
B
red
1
on
750-461/000-007 Overrange of the admissible
measuring range
off No operational readiness or the internal data bus
communication is interrupted
C
green on Operational readiness and trouble-free internal data
bus communication
off Normal operation
750-461,
750-461/000-003,
-004, -005, -006
Overrange/underflow of the
admissible measuring range,
broken wire
750-461/000-200 Overrange of the admissible
measuring range, broken wire
750-461/000-002 Overrange/underflow of the
admissible measuring range
13 14
C
D
B
A
D
B
C
A
Fig. 2.1.2-2:
Display Elements
g045202x
D
red
2
on
750-461/000-007 Overrange of the admissible
measuring range

750-461, (/xxx-xxx) [2 AI Pt100/ RTD] • 11
Schematic Diagram
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.5 Schematic Diagram
Shield
(screen)
+R1 +R2
RL1
-R1
+R
270pF
RL2
-R2
RL
10nF
270pF
-R
MUX A
DLogic
Function
Error
Shield
(screen)
1
2
3
4
5
6
7
8
750-461
Fig. 2.1.2-3: 2-Channel Analog Input Module 750-461 g046101e

12 • 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]
Technical Data
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.6 Technical Data
Module Specific Data
Number of inputs 2
Voltage supply via system voltage DC /DC
Current consumption max. (internal) 80 mA
Sensor types
(the free configurable variation supports all
listed sensor types)
Pt 100 (factory preset), optionally orderable
variants for Pt 200, Pt 500, Pt 1000,
Ni 100, Ni 120, Ni 1000, resistance measuring.
Sensor connection 3-wire (factory preset) or 2-wire
Temperature range -200 °C ... +850 °C (Pt)
-60 °C ... +250 °C (Ni)
Resolution 0,1 °C
Conversion time 320 ms (per channel)
960 ms (per channel for 750-461/000-006)
Response delaymax.
(time from starting or connecting the sensor to
the first proper measured value)
4 s
12 s (for 750-461/000-006)
Measuring error 25°C <±0.2 % of full scale value
Temperature coefficient <±0.01 % /K of full scale value
<±0,001 % /K of full scale value (for
750-460/000-006)
Isolation 500 V (System/Supply)
Measured current typ. 0.5 mA
Bit width 2 x 16 bits data
2 x 8 bits control/status (option)
Dimensions (mm) W x H x L 12 x 64* x 100
* from upper edge of 35 DIN rail
Weight ca. 55 g
Standards and Regulations (cf. Chapter 2.2 of the Coupler/Controller Manual)
EMC-Immunity to interference (CE) acc. to EN 50082-2 (96)
EMC-Emission of interference (CE) acc. to EN 50081-1 (93)
EMC-Immunity to interference
(Ship building)
acc. to Germanischer Lloyd (01)
EMC-Emission of interference
(Ship building)
acc. to Germanischer Lloyd (01)

750-461, (/xxx-xxx) [2 AI Pt100/ RTD] • 13
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
Approvals (cf. Chapter 2.2 of the Coupler/Controller Manual)
CULUS (UL508)
ABS (American Bureau of Shipping)
BV (Bureau Veritas)
DNV (Det Norske Veritas) Cl. B
GL (Germanischer Lloyd) Cat. A, B, C, D
KR (Korean Register of Shipping)
LR (Lloyd's Register) Env. 1, 2, 3, 4
NKK (Nippon Kaiji Kyokai)
RINA (Registro Italiano Navale)
CULUS (UL1604) Class I Div2 ABCD T4A
KEMA II 3 G EEx nA II T4
Conformity Marking
More Information
Detailed references to the approvals are listed in the document "Overview
Approvals WAGO-I/O-SYSTEM 750", which you can find on the CD ROM
ELECTRONICC Tools and Docs (Item-No.: 0888-0412)
or in the internet under:
www.wago.com !Documentation !WAGO-I/O-SYSTEM 750 !
System Description
2.1.2.7 Process Image
Some fieldbus systems can process input channel status information by means
of a status byte.
This status byte can be displayed via the WAGO-I/O-CHECK 2 start-up and
diagnostic tool. However, processing via the coupler / controller is optional,
which means that accessing or parsing the status information depends on the
fieldbus system.

14 • 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
Attention
The representation of the process data of some I/O modules or their variations
in the process image depends on the fieldbus coupler/-controller used. Please
take this information as well as the particular design of the respective
control/status bytes from the section "Fieldbus Specific Design of the Process
Data" included in the description concerning the process image of the
corresponding coupler/controller.
2.1.2.7.1 I/O Modules for Pt Resistance Sensors
Pt resistance sensors (Measuring range: -200 °C ... +850 °C)
750-461 Evaluation of Pt 100
750-461/000-003 Evaluation of Pt 1000
750-461/000-006 Evaluation of Pt 100, high precision
(0.001%/K) (Conversion time 960ms)
750-461/000-200 Evaluation of Pt 100, with status information
for S5-FB250
To evaluate the platinum resistance sensors (750-461, 750-461/000-003 and
750-461/000-006) 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 Pt
sensors from -200 °C to +850 °C.
In the Pt 100 or Pt 1000 setting, 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 measured values of the resistance are directly sent by the 750-461/000-
200 (Pt 100) module.

750-461, (/xxx-xxx) [2 AI Pt100/ RTD] • 15
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.7.1.1Pt 100
The analog input modules 750-461 and 750-461/000-006 transmit 16-bit
measured values per channel as well as 8 optional status bits to the
coupler/controller.
However, accessing the status byte depends on the fieldbus system being used.
750-461, /000-006 (Pt 100)
Numerical value 1)
Status-
byte
LED
Error
Tem-
perature
°C
Resis-
tance
!binary hex. dec. Hex. AI 1, 2
<-200.0 10.00 '1000.0000.0000.0001' 0x8001 -32767 0x41 on
-200.0 18.49 '1111.1000.0011.0000' 0xF830 -2000 0x00 off
-100.0 60.25 '1111.1100.0001.1000' 0xFC18 -1000 0x00 off
0.0 100.00 '0000.0000.0000.0000' 0x0000 0 0x00 off
100.0 138.50 '0000.0011.1110.1000' 0x03E8 1000 0x00 off
200.0 175.84 '0000.0111.1101.0000' 0x07D0 2000 0x00 off
500.0 280.90 '0001.0011.1000.1000' 0x1388 5000 0x00 off
750.0 360.47 '0001.1101.0100.1100' 0x1D4C 7500 0x00 off
800.0 375.51 '0001.1111.0100.0000' 0x1F40 8000 0x00 off
850.0 390.26 '0010.0001.0011.0100' 0x2134 8500 0x00 off
>850.0 >390.26 '0010.0001.0011.0100' 0x2134 8500 0x42 on
Broken wire against RL'0010.0001.0011.0100' 0x2134 8500 0x42 on
1) Temperature values below 0 °C are represented in two’s complement binary form.
The measured value can exceed the range from decimal –2000 to 8500 until the limitation
applies.
2.1.2.7.1.2Pt 1000
The analog input modules 750-461/000-003 transmit 16-bit measured values
per channel as well as 8 optional status bits to the coupler/controller.
However, accessing the status byte depends on the fieldbus system being used.
750-461/000-003 (Pt 1000)
Numerical value 1)
Status-
byte
LED
Error
Tem-
perature
°C
Resis-
tance
!binary hex. dec. Hex. AI 1, 2
<-200.0 100.00 '1000.0000.0000.0001' 0x8001 -32767 0x41 on
-200.0 184.93 '1111.1000.0011.0000' 0xF830 -2000 0x00 off
-100.0 602.54 '1111.1100.0001.1000' 0xFC18 -1000 0x00 off
0.0 1000.00 '0000.0000.0000.0000' 0x0000 0 0x00 off
100.0 1385.00 '0000.0011.1110.1000' 0x03E8 1000 0x00 off
200.0 1758.40 '0000.0111.1101.0000' 0x07D0 2000 0x00 off
500.0 2808.96 '0001.0011.1000.1000' 0x1388 5000 0x00 off
750.0 3604.65 '0001.1101.0100.1100' 0x1D4C 7500 0x00 off
800.0 3755.09 '0001.1111.0100.0000' 0x1F40 8000 0x00 off
850.0 3902.62 '0010.0001.0011.0100' 0x2134 8500 0x00 off
>850.0 >3902.62 '0010.0001.0011.0100' 0x2134 8500 0x42 on
Broken wire against RL'0010.0001.0011.0100' 0x2134 8500 0x42 on
1) Temperature values below 0 °C are represented in two’s complement binary form.
The measured value can exceed the range from decimal –2000 to 8500 until the limitation
applies.

16 • 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.7.1.3Pt 100 with Status Information for S5-FB250 in Data Word
The analog input module 750-461/000-200 transmits 16-bit measured values
per channel as well as 8 optional status bits to the coupler/controller.
When a S5 is used as higher-level control system, this data can be directly
processed using the FB 250 function block.
However, accessing the status byte depends on the fieldbus system being used.
The status information is mapped to bits 0 to 2 and the digitized measured
value to bits 3 to 14.
750-461/000-200
Tem-
perature
Resis-
tance
Numerical value 2)
with status information 1)
Status-
byte
LED
Error
°C !binary XFÜ
1)
hex. dec. hex. AI 1,2
10 '0000.0011.0011.0 000' 0x0330 819 0x00 off
-200.0 20 '0000.0110.0110.0 000' 0x0660 1638 0x00 off
-185.0 25 '0000.1000.0000.0 000' 0x0800 2048 0x00 off
-125.0 50 '0001.0000.0000.0 000' 0x1000 4096 0x00 off
0.0 100 '0010.0000.0000.0 000' 0x2000 8192 0x00 off
266.0 200 '0100.0000.0000.0 000' 0x4000 16384 0x00 off
560.0 300 '0110.0000.0000.0 000' 0x6000 24576 0x00 off
850.0 390 '0111.1100.1100.1 000' 0x7CC8 32949 0x00 off
800 '1111.1111.1111.1 000' 0xFFF8 65535 0x00 off
>800 undefined 0x00 off
>ca.1200 '0001.0000.0001.0 001' 0x1011 4113 0x42 on
1Status information: X: not used, F: short-circuit, broken wire, Ü: overrange
2) Temperature values below 0 °C are represented in two’s complement binary form.
Values marked with "ca." are not calibrated.

750-461, (/xxx-xxx) [2 AI Pt100/ RTD] • 17
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
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.
2.1.2.7.2.1Ni 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.
750-461/000-004 (Ni 100)
Numerical value 1)
Status-
byte
LED
Error
Tem-
perature
°C
Resis-
tance
!binary hex. dec. hex. AI 1,2
<-60.0 < 69.16 '1000.0000.0000.0001' 0x8001 -32767 0x41 on
-60.0 69.16 '1111.1101.1010.1000' 0xFDA8 -600 0x00 off
-50.0 74.26 '1111.1110.0000.1100' 0xFE0C -500 0x00 off
0.0 100.00 '0000.0000.0000.0000' 0x0000 0 0x00 off
50.0 129.10 '0000.0001.1111.0100' 0x01F4 500 0x00 off
100.0 161.77 '0000.0011.1110.1000' 0x03E8 1000 0x00 off
150.0 198.62 '0000.0101.1101.1100' 0x05DC 1500 0x00 off
200.0 240.64 '0000.0111.1101.0000' 0x07D0 2000 0x00 off
250.0 289.13 '0000.1001.1100.0100' 0x09C4 2500 0x00 off
>250.0 >289.13 '0010.0001.0011.0100' 0x2134 8500 0x42 on
Broken wire against RL'0010.0001.0011.0100' 0x2134 8500 0x42 on
1) )Temperature values below 0 °C are represented in two’s complement binary form.
The measured value can exceed the range from decimal –600 to 2500 until the limitation
applies.

18 • 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.7.2.2Ni 1000
In the Ni 1000 setting 750-461/000-005, 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.
750-461/000-005 (Ni 1000)
Numerical value 1)
Status-
byte
LED
Error
Tem-
perature
°C
Resis-
tance
!binary hex. dec. hex. AI 1,2
<-60.0 < 691.60 '1000.0000.0000.0001' 0x8001 -32767 0x41 on
-60.0 691.60 '1111.1101.1010.1000' 0xFDA8 -600 0x00 off
-50.0 742.60 '1111.1110.0000.1100' 0xFE0C -500 0x00 off
0.0 1000.00 '0000.0000.0000.0000' 0x0000 0 0x00 off
50.0 1291.00 '0000.0001.1111.0100' 0x01F4 500 0x00 off
100.0 1617.96 '0000.0011.1110.1000' 0x03E8 1000 0x00 off
150.0 1986.20 '0000.0101.1101.1100' 0x05DC 1500 0x00 off
200.0 2406.40 '0000.0111.1101.0000' 0x07D0 2000 0x00 off
250.0 2891.31 '0000.1001.1100.0100' 0x09C4 2500 0x00 off
>250.0 >2891.31 '0010.0001.0011.0100' 0x2134 8500 0x42 on
Broken wire against RL'0010.0001.0011.0100' 0x2134 8500 0x42 on
1) )Temperature values below 0 °C are represented in two’s complement binary form.
The measured value can exceed the range from decimal –600 to 2500 until the limitation
applies.

750-461, (/xxx-xxx) [2 AI Pt100/ RTD] • 19
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.7.3 I/O Modules for Resistance Measuring
Resistance measuring
750-461/000-002 Resistance measuring,
Measuring range: 10 Ω... 1.2 kΩ
750-461/000-007 Resistance measuring,
Measuring range: 10 Ω... 5.0 kΩ
The measured values are sent out directly when measuring the resistance.
Using the 750-461/000-002 module with measuring range from 10 Ωto
1.2 kΩ, the resolution is 1 digit per 0.1 Ω.
Using the 750-461/000-007 module with measuring range from 10 Ωto
5.0 kΩ, the resolution is 1 digit per 0.5 Ω.
Resistance measurement is only possible in 2-wire connection technology.
The analog input module transmits 16-bit measured values per channel as well
as 8 optional status bits to the coupler/controller.
750-461/000-002 (10 "... 1,2 k")
Resistance Numerical value
Status-
byte
LED
Error
"binary hex. dec. hex. AI 1,2
0 '1110.1100.0000.0000' 0xEC00 -5120 0x00 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
>ca.1200 '0010.0001.0011.0100' 0x2134 8500 0x42 on
Values marked with "ca." are not calibrated.
750-461/000-007 (10 "... 5 k")
Resistance Numerical value
Status-
byte
LED
Error
"binary 1) hex. dec. hex. AI 1,2
0 '1110.1100.0000.0000' 0xEC00 -5120 0x00 off
10 '0000.0000.0001.0100' 0x0014 20 0x00 off
100 '0000.0000.1100.1000' 0x00C8 200 0x00 off
200 '0000.0001.1001.0000' 0x0190 400 0x00 off
300 '0000.0010.0101.1000' 0x0258 600 0x00 off
1000 '0000.0111.1101.0000' 0x07D0 2000 0x00 off
2000 '0000.1111.1010.0000' 0x0FA0 4000 0x00 off
3000 '0001.0111.0111.0000' 0x1770 6000 0x00 off
4000 '0001.1111.0100.0000' 0x1F40 8000 0x00 off
5000 '0010.0111.0001.0000' 0x2710 10000 0x00 off
>ca.5000 '0010.0111.0001.0000' 0x2710 10000 0x42 on
Values marked with "ca." are not calibrated.

20 • 750-461, (/xxx-xxx) [2 AI Pt100/ RTD]
Adjustable 750-461/003-000 Variation
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.8 Adjustable 750-461/003-000 Variation
The operating mode of the 750-461/003-000 variation can be parameterized
using the WAGO-I/O-CHECK 2 start-up and diagnostic tool (Item No.: 759-
302).
The default setting is Pt 100. In this operating mode, the module has the same
behavior and process values as the 750-461 basic module.
The parameter dialog box of WAGO-I/O-CHECK 2 contains select boxes
that are used to set this module.
Select box Available settings
RTD Type Pt100 (-200 °C – 850 °C)* / Ni100 (-60 °C – 250 °C) /
Pt1000 (-200 °C – 850 °C) / Pt500 (-200 °C – 850 °C) /
Pt200 (-200 °C – 850 °C) / Ni1000 (-80 °C – 320 °C) /
Ni120 (-80 °C – 320 °C) / Ohm ( 10.0 Ω– 5000.0 Ω) /
Ohm (10.0 Ω– 1200.0 Ω)
2-wire Two-wire connectionConnection
3-wire* Three-wire connection
OFF* State bits are not mappedState-Bits
ON State bits are mapped to the lower three bits of
the output value:
Bit 0:overrun. Bit is set if measuring value runs
out of range.
Bit 1:error. Bit is set if the module detects an
error in internal functions or a shortcut at the
input.
Bit 2: 0
OFF Watchdog timer not activeWatchdog
Timer ON* Watchdog timer active.
If no data are exchanged with the buscoupler for
100 ms, the green LEDs will turn off.
OFF* Two´s complement indicationAmount Sign
ON Amount/Sign indication
Filter
Constants
12.5 Hz – 500 ms / 25 Hz – 250 ms* / 50 Hz – 125 ms /
60 Hz – 110 ms / 100 Hz – 65 ms
OFF The output value is not limitedOverrange
Protection ON* If the temperature exceeds 850°C, the status bits
are set and the output value is limited to 850°C
OFF* User scaling not activeUser Scaling
ON User scaling active
OFF WAGO scaling not activeWAGO
Scaling ON* WAGO scaling active
* default settings