WAGO 750-563 User manual

Fieldbus Independent
I/O Modules
2 AO 0/4-20mA / 6-18V DC 16 Bit
750-563
Manual
Version 1.0.0

ii • General
WAGO-I/O-SYSTEM 750
I/O Modules
Copyright ©2008 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 ................................................................................. 5
1.1 Legal Principles........................................................................................5
1.1.1 Copyright............................................................................................. 5
1.1.2 Personnel Qualification .......................................................................5
1.1.3 Intended Use ........................................................................................5
1.2 Symbols....................................................................................................6
1.3 Number Notation......................................................................................6
1.4 Safety Notes .............................................................................................7
1.5 Scope ........................................................................................................5
2I/O Modules ................................................................................................. 8
2.1 Analog Output Modules ...........................................................................8
2.1.1 750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit] ................................... 8
2.1.1.1 View................................................................................................8
2.1.1.2 General Description ........................................................................8
2.1.1.3 Connecting Elements ....................................................................10
2.1.1.4 Indicators.......................................................................................10
2.1.1.5 Operating Elements.......................................................................10
2.1.1.6 Schematic Diagram.......................................................................11
2.1.1.7 Process Image ...............................................................................11
2.1.1.7.1 Overview.................................................................................. 11
2.1.1.7.2 Control and Status Bytes..........................................................12
2.1.1.7.3 Process Values .........................................................................14
2.1.1.8 Function Description.....................................................................16
2.1.1.8.1 Step 1 – Reading Out XIN Process Data...................................16
2.1.1.8.2 Step 2 – Y1User Scaling..........................................................17
2.1.1.8.3 Step 3 – Y2Conversion of the Data Format.............................18
2.1.1.8.4 Step 4 – Y3 Limit Control.........................................................18
2.1.1.8.5 Step 5 – YDAC Calibration.........................................................19
2.1.1.9 Parameter Setting..........................................................................20
2.1.1.9.1 Register Assignment ................................................................20
2.1.1.9.2 Data Structures .........................................................................25
2.1.1.9.2.1 Configuration Concept ........................................................25
2.1.1.9.2.2 Switching the Operating Mode............................................25
2.1.1.9.2.3 Register Access and EEPROM Banks ................................25
2.1.1.9.3 Parameterization via Register Communication........................27
2.1.1.9.3.1 Register Assignment............................................................28
2.1.1.9.3.2 Control and Status Byte at Register Communication..........29
2.1.1.9.4 Parameterization via the Parameter Channel ...........................30
2.1.1.9.4.1 Assignment of Parameter Channel Addresses.....................30
2.1.1.9.4.2 Register Structure ................................................................ 31
2.1.1.9.4.3 Write/Read Process .............................................................33
2.1.1.9.4.4 Examples .............................................................................34
2.1.1.9.5 Parameterization via WAGO-I/O-CHECK..............................35
2.1.1.9.5.1 User Interface ...................................................................... 35
2.1.1.9.6 Parameterization via GSD........................................................ 44

iv • Content
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.10 Technische Daten..........................................................................45
2.1.1.11 Fieldbus-Specific Behavior...........................................................47
2.1.1.11.1 Default Mapping ......................................................................47
2.1.1.11.2 Mapping for Couplers/Controllers with Word-Alignment .....47

Important Comments •5
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
read carefully and followed.
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.

6 •Important Comments
Symbols
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
precautionary measures for handling components at risk.
Note
Routines or advice for efficient use of the device and software optimization.
Additional Information
References for additional literature, manuals, data sheets and web pages.
1.3 Number Notation
Number Code Example Note
Decimal 100 normal notation
Hexadecimal 0x64 C notation
Binary '100'
'0110.0100'
within inverted commas,
nibble separated with dots

Important Comments •7
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. Members of this group include: aerosols, silicones,
triglycerides (found in some hand creams).
If it cannot determined that these materials appear in the component
environment, then additional measures must be taken:
- install of the components in an appropriate enclosure
- handle components only with clean tools and materials.
Attention
Soiled contacts may only be cleaned with ethyl alcohol and leather cloths.
This helps ensure compliance with ESD information.
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. As
such, the system and its components must be installed in appropriate
housings, cabinets, enclosures or in electrical operation rooms. Access must
only be provided via 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 Output Module 750-563
2 AO 0/4-20mA / 6-18V DC 16 Bit 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.

8 •750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit]
View
WAGO-I/O-SYSTEM 750
I/O Modules
2 I/O Modules
2.1 Analog Output Modules
2.1.1 750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit]
2-channel analog output module, 0/4 ... 20 mA / 6 ... 18 V DC,
16 Bit, configurable
2.1.1.1 View
A1+ A2+
MM
13 14
C
D
B
A
750-563
S1- S2-
S1+ S2+
+AO 2
+Sense AO 2
+AO 1
+Sense AO 1
-Sense AO 2-Sense AO 1
+24 V
0V
Power jumper
contacts
Data contacts
Function AO 1
Ground
Function AO 2
Error AO 1 Error AO 2
Ground
Fig. 2.1.1-1: View g056300e
2.1.1.2 General Description
The 750-563 analog output module generates output currents in the range
from 0/4 ... 20 mA or output voltages in the range from 6 ... 18 V for the field
area.
The module has two short circuit-proof output channels and enables the direct
cabling of two 2-line actuators on the connections AO 1 and ground or AO2
and ground. The output of the signals occurs via AO 1 or AO 2.
In addition, the sense lines from 4-line actuators can be connected to the
connections Sense AO1 and +Sense AO1 or Sense AO2 and +SenseAO2.
The integrated drivers of the end levels are temperature-monitored.
Both output channels have a common ground potential.
The output signal is electrically isolated from the system level and will be
output with a resolution of 16 bits.

750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit] • 9
General Description
WAGO-I/O-SYSTEM 750
I/O Modules
The readiness for operation and the disturbance-free I/O module
communication of the module is indicated with one green function LED per
channel.
An overload or a short circuit of an output is indicated by one red error LED
per channel.
The calibration data is stored individually for each operating mode and can be
scaled. For the process data output, a lower and an upper limit value can be
specified.
Furthermore, a variety of adjustment possibilities can be made, including
calibration data switching, numeric format and numeric display switching,
output behavior for I/O module timeout, (repeat) switch-on delay after
excessive temperature switch-off, etc. The individual output modules can be
arranged in any combination when configuring the fieldbus node.
An arrangement in blocks is not necessary.
Both the internal system supply and the field power supply are used for the
module's power supply.
Both the 5 V system supply (internal data bus) and the 24 V field power
supply (power jumper contacts) are monitored for undervoltage.
The output module receives the 0 V potential and the 24 V for downstream
I/O modules via an upstream I/O module or via a supply module. Power
connections are made automatically from module to module via the internal
power jumper contacts when the output modules are snapped onto the DIN
rail.
Warning
The maximum current that is permitted to flow through the power jumper
contacts is 10 A. When configuring the system, ensure that this total current is
not exceeded. If this should happen, an additional supply module has to be
used.
The output module can be operated on all couplers/controllers (with the
exception of the economy variants 750-320, -323, -324, and -327) of the
WAGO-I/O-SYSTEM 750.

10 •750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit]
Connecting Elements
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.3 Connecting Elements
Connection Name Function
1 A1+ Analog output 1
2 S1+
Positive sense connection for
analog output 1
3 S1-
Negative sense connection
for analog output 1
4 M Ground for analog outputs
5 A2+ Analog output 2
6 S2+
Positive sense connection for
analog output 2
7 S2-
Negative sense connection
for analog output 2
S1-
MM
750-563
S1+ S2+
A1+ A2+
+Sense AO 1
-Sense AO 1
M
+Sense AO 2
M
+AO 1 +AO 2
-Sense AO 2
S2-
Fig. 2.1.1-2: Connecting elements
g056303x 8 M Ground for analog outputs
2.1.1.4 Indicators
LED Channel Name Status Function
off I/O module timeout
A 1 RUN
green Internal data bus OK
off No group error
B 1 ERROR red Group error
off Internal data bus timeout
C 2 RUN
green Internal data bus OK
off No group error
13 14
C
D
B
A
D
C
B
A
Fig. 2.1.1-3: Indicators
g056002x
D 2 ERROR
red Group error
2.1.1.5 Operating Elements
The 750-563 analog output module has no operating elements.
The configuration and the parameters can be changed via the higher-level
controller or with the WAGO-I/O-CHECK configuration tool.

750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit] • 11
Schematic Diagram
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.6 Schematic Diagram
750-563
1
2
3
4
5
6
7
8
A
D
0 ... 20 mA
6 ... 18 V
I
U
+AO 2
+Sense AO 2
+AO 1
+Sense AO 1
-Sense AO 2-Sense AO 1
+24 V
0V
AO
100 nF
10 nF
+24 V
0V
10 nF
Ground Ground Ground
Function Error
Logic
Fig. 2.1.1-4: Schematic circuit diagram g056301e
2.1.1.7 Process Image
2.1.1.7.1 Overview
Input data Output data
S0 Status byte 0 C0 Control byte 0
D0 Not used D0 Output data word 1 (LSB)
D1 Not used D1 Output data word 1 (MSB)
S1 Status byte 1 C1 Control byte 1
D2 Not used D2 Output data word 2 (LSB)
D3 Not used D3 Output data word 2 (MSB)

12 •750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit]
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.7.2 Control and Status Bytes
Controlbyte C0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reg_Com 0 0 0 0 0 0 0
Reg_Com 0: Process data communication
0 Reserved
Statusbyte S0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reg_Com ERR_1 ERR24V TEMP_1 LOAD_1 COM_1 OVR_1 UNR_1
Undershooting underrange limit value channel 1
Results from the limit value monitoring before the comparison of the process data in the calibrated
range. If the configured limit value is undershot, this bit is set.
0: Underrange limit value is not undershot.
UNR_1
1: Underrange limit value is undershot.
Exceeding of overrange limit value channel 1
Results from the limit value monitoring before the comparison of the process data in the calibrated
range. If the configured limit value is exceeded, this bit is set.
0: Overrange limit value is not exceeded.
OVR_1
1: Overrange limit value is exceeded.
Output driver error 1 (COM) channel 1, common mode overrange
This bit is set if the 24 V field power falls bellow 20 V.
0: No output driver error 1 (COM)
COM_1
1: Output driver error 1 (COM) present.
Output driver error 2 (LAST) channel 1, load error
This bit is set if there is a short circuit on the output.
0: No output driver error 1 (LAST).
LOAD_1
1: Output driver error 2 (LAST) present.
Output driver error 3 (TEMP) channel 1, over temperature
This bit is set if the permissible temperature of the output driver was exceeded.
0: No output driver error 3 (TEMP)
TEMP_1
1: Output driver error 3 (TEMP) present.
Error 24 V Field supply voltage
This bit indicates an invalid state of the field-side power supply. In mode 6 ... 18 V, the
undervoltage detection threshold is inherently slightly higher (at approx. 20.5 V). The module
outputs the desired voltage value when this threshold is indicated, however this value will not
exceed the value that is still technically possible. The input voltage must be approximately 2V
higher than the desired output voltage.
0: 24 V Field supply voltage OK.
ERR24V
1: 24 V Field supply voltage too small.
Group error channel 1
If one of the channel-related status bits is activated, this bit is also set to 1.
0: No group error.
ERR_1
1: Group error present.
Reg_Com 0: Process data communication

750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit] • 13
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
Controlbyte C1
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reg_Com 0 0 0 0 0 0 0
Reg_Com 0: Process data communication
0 Reserved
Statusbyte S1
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reg_Com ERR_2 ERR5V TEMP_2 LOAD_2 COM_2 OVR_2 UNR_2
Undershooting underrange limit value channel 2
0: Underrange limit value is not undershot.
UNR_2
1: Underrange limit value is undershot.
Exceeding overrange limit value channel 2
0: Overrange limit value is not exceeded.
OVR_2
1: Overrange limit value is exceeded.
Output driver error 1 (COM) channel 2, common mode overrange
This bit is set if the 24 V field power falls bellow 20 V.
0: No output driver error 1 (COM).
COM_2
1: Output driver error 1 (COM) present.
Output driver error 2 (LAST) channel 2, load error
This bit is set if there is a short circuit during voltage output or if there is an open circuit during
current output.
0: No output driver error 1 (LAST).
LOAD_2
1: Output driver error 2 (LAST) present.
Output driver error 3 (TEMP) channel 2, over temperature
This bit is set if the permissible temperature of the output driver was exceeded.
0: No output driver error 3 (TEMP)
TEMP_2
1: Output driver error 3 (TEMP) present.
Error 5 V system voltage
0: 5 V system voltage OK
ERR5V
1: 5 V system voltage smaller 4.65 V
Group error channel 2
If one of the channel-related status bits is activated, this bit is also set to 1.
0: No group error
ERR_2
1: Group error present.
Reg_Com 0: Process data communication

14 •750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit]
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.7.3 Process Values
Data format 0 ... 65535
Manufacturer calibration, without user scaling
Numeric value
6 ... 18 V, [UA] = V
hexadecimal decimal
6,0 0000 0
9,0 3FFF 16383
12,0 7FFF 32767
15,0 BFFF 49151
18,0 FFFF 65535
Data format 0 ... 65535
Manufacturer calibration, without user scaling
Numeric value
0 ... 20 mA, [IA] = mA
hexadecimal decimal
0,0 0000 0
5,0 3FFF 16383
10,0 7FFF 32767
15,0 BFFF 49151
20,0 FFFF 65535
Data format 0 ... 65535
Manufacturer calibration, without user scaling
Numeric value
4 ... 20 mA, [IA] = mA
hexadecimal decimal
4,0 0000 0
8,0 3FFF 16383
12,0 7FFF 32767
16,0 BFFF 49151
20,0 FFFF 65535

750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit] • 15
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
Numeric formats
Display
0 mA
4 mA
6 V
20 mA
20 mA
18 V
0 ... 65535 0x0000
0 !0x7FFF 32767
0x8000
32768 !0xFFFF 65535
Twos complement 0x8000
-32768 !0xFFFF -1
0x0001
0 !0x7FFF 32767
Leading sign/amount 0xFFFF
-32767 !0x8001 -1
0x0001
!0x7FFF 32767
Setting of the upper and lower limit value depending on the numeric
format:
In the +/- numeric ranges, the limit values must be re-calculated to a positive
equivalent in the range from 0 ... 65535 (see table).
1. Example: twos complement
Lower limit: -10 -> underrange limit value (register 41): 32758
Upper limit: +10 -> overrange limit value (register 42): 32778
2. Example: leading sign/amount
Lower limit: -10 -> underrange limit value (register 41): 32758
Upper limit: +10 -> overrange limit value (register 42): 32778
Setting the upper and lower limit value depending on a scaling:
3. Example: scaling
–10000 should correspond to –10 V, +10000 should correspond to +10 V.
This way, the scaling factor is: 32767 / 10000 = 3,2767.
3,2767 * 256 (increment with scaling) = 839.
839 is the amplification factor (gain, register 34). The offset (register 33)
remains 0.
If limit values should now be determined, these must be multiplied by 3.2767
and then re-calculated as in the first example to a numeric equivalent in the
range from 0 ... 65535.

16 •750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit]
Function Description
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.8 Function Description
The conversion algorithm takes into account all calculation and evaluation
steps of the process data up to the analog output value. The individual steps
will be explained in this chapter. The figure below provides a graphic
overview of the stepwise processing of the input value.
PAOUT
DAC
Y 1
Y 2
Y 3
Y DAC
X IN
Overrange
Underrange
DATA-
Format
DAC-
Format
Casting
Step 2
Step 3
Step 4
Step 5
Step 1
Manufacturer
calibration
User
calibration
User
scaling
Fig. 2.1.1-5: Conversion algorithm g056204e
2.1.1.8.1 Step 1 – Reading Out XIN Process Data
XIN is transmitted to the module with the process data communication. The 16
bit-wide value depends on the data format. The data format is determined by
bit 3 and bit 6 in register 32.
The following data formats are possible:
Bit width Description Minimum value Maximum value
16 bits Integer without leading sign 0 65535
16 bits Integer with leading sign -32768 +32767
15 bits Integer with leading sign bit -32767
(leading sign bit = 1)
+32767
(leading sign bit = 0)

750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit] • 17
Function Description
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.8.2 Step 2 – Y1User Scaling
The value for Y1is generated with the user scaling if this is approved through
bit 0 of the register 32. The value XIN serves as input value for the user
scaling. For switched-off user scaling, the value XIN is transferred unchanged
to Y1.
The calculation occurs taking into account the configured data format and the
quality rating of the results is determined by an amplification factor and an
offset.
Configuration of the user scaling Description
Register 33 - OffsetAS Offset
Register 34 - GainAS Amplification factor
Calculation formula:
Y
1= XIN * GainAS / 256 + OffsetAS
The user scaling serves to adjust a desired process value range to the analog
output range specified through the calibration.
Furthermore, it is possible to map the calibrated 0 ... 20 mA output range so
that the 4 mA analog value is output at a zero process data value with sign and
currents smaller than 4mA can be generated with negative process data values.
The calculation for the user scaling is carried out module-internally in the
32 bit numeric range.
With the use of the user scaling, the required precision of the resolution of the
analog adjusting range is changed, but not essentially limited. It is at the
discretion of the user whether the user scaling should be used or not. With a
GainAS = 256, the resolution remains uninfluenced in the 16-bit wide numeric
range.
The value of 1/256 permits amplifications in the range from 0.0039 to
255,9960 and thus offers the user scaling a very high variation range.

18 •750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit]
Function Description
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.8.3 Step 3 – Y2Conversion of the Data Format
In this step, the value Y1determined through the configured data format is
converted into the DAC format, leading sign-less 16 bit integer. The context
of the conversion is described below:
Integer without
leading sign
Integer with leading
sign
Integer with leading
sign bit DAC format
0 -32768 undefined 0
1 -32767 -32767 1
... ... ... ...
32768 0 0 32768
... ... ... ...
65535 +32767 [phone]
2.1.1.8.4 Step 4 – Y3 Limit Control
The limit control monitors whether the value Y2in DAC format is in the
desired value range. This value range is defined by the parameter underrange
limit value (UNR) and the overrange limit value (OVR). Via bit 7 of the
register 32, it is also possible to activate a limit of the value Y3to this range.
During the determination of the calibration values for the manufacturer or user
calibration, no limit should be placed. You can achieve this by configuring the
overrange and underrange limit values to the maximum or minimum value
(65535 or 0) or by writing a 0 to bit 7 of register 32.
Configuration of the overrun limit
Register Name Description
41 Underrange limit value
42 Overrange limit value
If you would like to set the limits to defined analog output values, then these
must be determined either like the calibration values in step 5 or calculated
from these.

750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit] • 19
Function Description
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.8.5 Step 5 – YDAC Calibration
This level serves to calibrate an analog output range to the process data value
range. AS parameter for the calibration, the module will only transmit the
basic value for the minimum value of the analog output range as offset. The
basic value for the maximum value serves to calculate a linear gain. The
degree of the gain is entered as amplification factor in register 37.
The amplification factor is calculated as follows:
Gain(A/H)K = 8192*((BasicValuemax – BasicValuemin) / 65535)
Two calibration sets are provided for the module. These are divided into the
manufacturer and user calibration. Only one calibration set is ever active. The
selection occurs via bit 1 of register 32.
Configuration of the manufacturer calibration
Register Name Description
17 OffsetHK Manufacturer calibration offset
18 GainHK Manufacturer calibration amplification factor
Configuration of the user calibration
Register Name Description
36 OffsetAK User calibration offset
37 GainAK User calibration amplification factor
Calculation formula:
Y
DAC = X3* Gain(A/H)K / 8192 + Offset(A/H)K
With the activation of the user calibration, the analog output range can be
selected freely taking into account the operating mode. In reality, the
minimum and maximum possible analog output values lie a little below or
above the named analog limits.

20 •750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit]
Parameter Setting
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.9 Parameter Setting
2.1.1.9.1 Register Assignment
The following tables display the assignments and factory settings for the
individual registers. The factory settings are the same for both channels.
Register Function Memory Access Factory setting
17 Manufacturer calibration offset RAM R/W 0xXXXX
16 bit integer value with leading sign.
The manufacturer calibration is active if bit 1 is set in register 32.
YDAC = Y3 * R18 / 8192 + R17
Register Function Memory Access Factory setting
18 Manufacturer calibration gain RAM R/W 0xXXXX
16 bit fixed point value without leading sign.
The manufacturer calibration is active if bit 1 is set in register 32.
YDAC = Y3 * R18 / 8192 + R17
Register Function Memory Access Factory setting
19 Manufacturer substitution value RAM R/W 0x0000
16 bit in XIN coordinates, depending on the numeric format.
The substitute value is placed on the output of the module after a system reset or a watchdog
timer overflow (module has received no process data for 100 ms).
The substitute value is selected via register 32, bit 9.