WAGO 750-404 User manual

Fieldbus Independent
I/O Modules
Counter Modules
750-404, (/xxx-xxx)
Manual
Version 1.2.0

ii • General
WAGO-I/O-SYSTEM 750
I/O Modules
Copyright 2012 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 Notes ..........................................................................................5
1.1 Legal Bases...............................................................................................5
1.1.1 Copyright.............................................................................................5
1.1.2 Personnel Qualifications......................................................................5
1.1.3 Use of the 750 Series in Compliance with Underlying Provisions .....6
1.1.4 Technical Condition of Specified Devices..........................................6
1.1.5 Standards and Guidelines for Operating the 750 Series......................7
1.2 Symbols....................................................................................................8
1.3 Safety Information....................................................................................9
1.4 Font Conventions ...................................................................................10
1.5 Number Notation....................................................................................10
1.6 Scope......................................................................................................11
2I/O Modules...............................................................................................12
2.1 Specialty Modules..................................................................................12
2.1.1 Overview Counter Modules 750-404, (/xxx-xxx).............................12
2.1.2 750-404 [Up/Down Counter /100 kHz].............................................13
2.1.2.1 Variations......................................................................................13
2.1.2.2 View..............................................................................................13
2.1.2.3 Description....................................................................................13
2.1.2.4 Display Elements..........................................................................15
2.1.2.5 Schematic Diagram.......................................................................15
2.1.2.6 Technical Data..............................................................................16
2.1.2.7 Process Image ...............................................................................17
2.1.2.7.1 Control- / Status byte 750-404.................................................18
2.1.2.7.2 Control- / Status byte 750-404/000-002...................................19
2.1.2.7.3 Control- / Status byte 750-404/000-004...................................20
2.1.2.8 Examples.......................................................................................21
2.1.2.8.1 750-404 ....................................................................................21
2.1.2.8.2 750-404/000-002......................................................................23
2.1.2.8.3 750-404/000-004......................................................................24
2.1.3 750-404/000-001 [Up Counter / Enable Input] .................................25
2.1.3.1 View..............................................................................................25
2.1.3.2 Description....................................................................................25
2.1.3.3 Display Elements..........................................................................26
2.1.3.4 Schematic Diagram.......................................................................27
2.1.3.5 Technical Data..............................................................................28
2.1.3.6 Process Image ...............................................................................29
2.1.3.7 Example ........................................................................................30
2.1.4 750-404/000-003 [Frequency Counter 0.1 Hz-100 kHz] ..................32
2.1.4.1 View..............................................................................................32
2.1.4.2 Description....................................................................................32
2.1.4.3 Display Elements..........................................................................34
2.1.4.4 Schematic Diagram.......................................................................34
2.1.4.5 Technical Data..............................................................................35
2.1.4.6 Functional Description..................................................................36
2.1.4.7 Process Image ...............................................................................37

iv •Content
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.4.8 Example ........................................................................................40
2.1.5 750-404/000-005 [2 Up Counter/16 Bit/5 kHz] ................................42
2.1.5.1 View..............................................................................................42
2.1.5.2 Description....................................................................................42
2.1.5.3 Display Elements ..........................................................................44
2.1.5.4 Schematic Diagram.......................................................................44
2.1.5.5 Technical Data..............................................................................45
2.1.5.6 Process Image ...............................................................................46
2.1.5.7 Example ........................................................................................47

Important Notes •5
Legal Bases
WAGO-I/O-SYSTEM 750
I/O Modules
1 Important Notes
This section includes an overall summary of the most important safety
requirements and notes that are mentioned in each individual section. To
protect your health and prevent damage to devices as well, it is imperative to
read and carefully follow the safety guidelines.
1.1 Legal Bases
1.1.1 Copyright
This Manual, including all figures and illustrations, is copyright-protected.
Any further use of this Manual by third parties that violate pertinent copyright
provisions is prohibited. Reproduction, translation, electronic and
phototechnical filing/archiving (e.g., photocopying) as well as any
amendments require the written consent of WAGO Kontakttechnik GmbH &
Co. KG, Minden, Germany. Non-observance will involve the right to assert
damage claims.
WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any
alterations or modifications that serve to increase the efficiency of technical
progress. WAGO Kontakttechnik GmbH & Co. KG owns all rights arising
from the granting of patents or from the legal protection of utility patents.
Third-party products are always mentioned without any reference to patent
rights. Thus, the existence of such rights cannot be excluded.
1.1.2 Personnel Qualifications
The use of the product described in this Manual requires special personnel
qualifications, as shown in the following table:
Activity Electrical specialist Instructed
personnel*)
Specialists**) having
qualifications in PLC
programming
Assembly X X
Commissioning X X
Programming X
Maintenance X X
Troubleshooting X
Disassembly X X
*) Instructed persons have been trained by qualified personnel or electrical specialists.
**) A specialist is a person, who – thanks to technical training – has the qualification, know-
ledge and expertise to meet the required specifications of this work and to identify any po-
tential hazardous situation in the above listed fields of activity.

6 •Important Notes
Legal Bases
WAGO-I/O-SYSTEM 750
I/O Modules
All responsible persons have to familiarize themselves with the underlying
legal standards to be applied. WAGO Kontakttechnik GmbH & Co. KG does
not assume any liability whatsoever resulting from improper handling and
damage incurred to both WAGO´s own and third-party products by
disregarding detailed information in this Manual.
1.1.3 Use of the 750 Series in Compliance with Underlying
Provisions
Couplers, controllers and I/O modules found in the modular WAGO-I/O-
SYSTEM 750 receive digital and analog signals from sensors and transmit
them to the actuators or higher-level control systems. Using programmable
controllers, the signals can also be (pre-)processed.
The components have been developed for use in an environment that meets
the IP20 protection class criteria. Protection against finger injury and solid
impurities up to 12.5 mm diameter is assured; protection against water damage
is not ensured. Unless otherwise specified, operation of the components in wet
and dusty environments is prohibited.
1.1.4 Technical Condition of Specified Devices
The components to be supplied Ex Works, are equipped with hardware and
software configurations, which meet the individual application requirements.
Changes in hardware, software and firmware are permitted exclusively within
the framework of the various alternatives that are documented in the specific
manuals. WAGO Kontakttechnik GmbH & Co. KG will be exempted from
any liability in case of changes in hardware or software as well as to non-
compliant usage of components.
Please send your request for modified and new hardware or software
configurations directly to WAGO Kontakttechnik GmbH & Co. KG.

Important Notes •7
Legal Bases
WAGO-I/O-SYSTEM 750
I/O Modules
1.1.5 Standards and Guidelines for Operating the 750 Series
Please adhere to the standards and guidelines required for the use of your
system:
The data and power lines shall be connected and installed in compliance
with the standards required to avoid failures on your system and to
substantially minimize any imminently hazardous situations resulting in
personal injury.
For assembly, start-up, maintenance and troubleshooting, adhere to the
specific accident prevention provisions which apply to your system (e.g.
BGV A 3, "Electrical Installations and Equipment").
Emergency stop functions and equipment shall not be made ineffective.
See relevant standards (e.g. DIN EN 418).
The equipment of your system shall be conform to EMC guidelines so that
any electromagnetic interferences will be eliminated.
Operating 750 Series components in home applications without further
measures is permitted only if they meet the emission limits (emissions of
interference) in compliance with EN 61000-6-3. You will find the detailed
information in section "WAGO-I/O-SYSTEM 750" "System
Description" "Technical Data".
Please observe the safety precautions against electrostatic discharge in
accordance with DIN EN 61340-5-1/-3. When handling the modules,
please ensure that environmental factors (persons, working place and
packaging) are well grounded.
The valid standards and guidelines applicable for the installation of switch
cabinets shall be adhered to.

8 •Important Notes
Symbols
WAGO-I/O-SYSTEM 750
I/O Modules
1.2 Symbols
Danger
Always observe this information to protect persons from injury.
Warning
Always observe this information to prevent damage to the device.
Attention
Marginal conditions that must always be observed to ensure smooth and
efficient operation.
ESD (Electrostatic Discharge)
Warning of damage to the components through electrostatic discharge.
Observe the precautionary measure for handling components at risk of
electrostatic discharge.
Note
Make important notes that are to be complied with so that a trouble-free and
efficient device operation can be guaranteed.
Additional Information
References to additional literature, manuals, data sheets and internet pages.

Important Notes •9
Safety Information
WAGO-I/O-SYSTEM 750
I/O Modules
1.3 Safety Information
When connecting the device to your installation and during operation, the
following safety notes must be observed:
Danger
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 is only permitted via a key or tool to authorized qualified personnel.
Danger
All power sources to the device must always be switched off before carrying
out any installation, repair or maintenance work.
Warning
Replace defective or damaged device/module (e.g. in the event of deformed
contacts), as the functionality of field bus station in question can no longer be
ensured on a long-term basis.
Warning
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 the
components must be installed in an enclosure that is resistant against the
above mentioned materials. Clean tools and materials are generally required
to operate the device/module.
Warning
Soiled contacts must be cleaned using oil-free compressed air or with ethyl
alcohol and leather cloths.
Warning
Do not use contact sprays, which could possibly impair the functioning of the
contact area.
Warning
Avoid reverse polarity of data and power lines, as this may damage the
devices.
ESD (Electrostatic Discharge)
The devices are equipped with electronic components that may be destroyed
by electrostatic discharge when touched.

10 •Important Notes
Font Conventions
WAGO-I/O-SYSTEM 750
I/O Modules
Warning
For components with ETHERNET/RJ-45 connectors:
Only for use in LAN, not for connection to telecommunication circuits.
1.4 Font Conventions
italic Names of paths and data files are marked in italic-type.
e.g.: C:\Programs\WAGO-IO-CHECK
italic Menu items are marked in italic-type, bold letters.
e.g.: Save
\ A backslash between two names characterizes the selection of a
menu point from a menu.
e.g.: File \ New
END Pushbuttons are marked as bold with small capitals
e.g.: ENTER
< > Keys are marked bold within angle brackets
e.g.: <F5>
Courier The print font for program codes is Courier.
e.g.: END_VAR
1.5 Number Notation
Number code Example Note
Decimal 100 Normal notation
Hexadecimal 0x64 C notation
Binary '100'
'0110.0100' In quotation marks, nibble separated with dots (.)

Important Notes •11
Scope
WAGO-I/O-SYSTEM 750
I/O Modules
1.6 Scope
This manual describes the Special Module 750-404, (/xxx-xxx) Counter
Modules of the modular WAGO-I/O-SYSTEM 750.
Handling, assembly and start-up are described in the manual of the Fieldbus
Coupler/Controller. Therefore this documentation is valid only in the
connection with the appropriate manual.

12 •Overview Counter Modules 750-404, (/xxx-xxx)
WAGO-I/O-SYSTEM 750
I/O Modules
2 I/O Modules
2.1 Specialty Modules
2.1.1 Overview Counter Modules 750-404, (/xxx-xxx)
I/O Module 750-404 750-404/
000-001 750-404/ 000-002 750-404/ 000-003 750-404/ 000-004 750-404/ 000-005
Function Up /
Down
Counter
Up
Counter /
Enable
Input
Peak Time
Counter Frequency Counter Up / Down Counter /
Switch
Output
2 Up
Counter
Channels 1 1 1 1 1 2
Switching rate max.
100 kHz max. 100 kHz max. 10 kHz 0,1 Hz ... 100 kHz max. 100 kHz max. 5 kHz
Counter depth 32 bit 32 bit 32 bit 32 bit 32 bit 16 bit

750-404 [Up/Down Counter /100 kHz] • 13
Variations
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2 750-404 [Up/Down Counter /100 kHz]
Up/Down Counter, DC 24 V, 100 kHz
2.1.2.1 Variations
Item-No. Designation Description
750-404 Up/Down Counter /
100 kHz Up/Down Counter, DC 24 V, 100 kHz
750-404/000-002 Peak Time Counter Peak Time Counter, DC 24 V, 10 kHz
750-404/000-004 Up / Down Counter /
Switch Output Up/Down Counter, 24 V, 100kHz, Switch Output
2.1.2.2 View
++
--
A1 A2
13 14
C
D
B
A
Power jumper contacts
Data contacts
DO 2
Status
24V
0V
DO 2
DO 1
Status
DO 1
U/D
750-404
U/D
U/D CLOCK
CLOCK
CLK
Fig. 2.1.2-1: View g040400e
2.1.2.3 Description
The Up/Down counter 750-404 and the variation 750-404/000-004 is capable
of counting binary pulses of DC 24 V at the input CLOCK and then transmits
the data to the fieldbus.
The counter module 750-404/000-002 begins processing with pulses at the
CLOCK input and counts the pulses in a special time span. The time span is
given as 10 s.
The changes from 0 V to 24 V are counted
The counter counts up, if the input U/D is set at 24 V. With an open circuit
input or 0 V the counter counts backwards.

14 •750-404 [Up/Down Counter /100 kHz]
Description
WAGO-I/O-SYSTEM 750
I/O Modules
The counter can be set or reset with the control byte.
The digital outputs DO 1 and DO 2 of the counter module 750-404 and the
variation 750-404/000-002 are activated through bits in the control byte.
The digital outputs DO 1 and DO 2 of the counter module 750-404/000-004
are activated depending on the counter reading or through bits in the control
byte.
The outputs are short-circuit-protected.
The high states of the inputs U/D and CLOCK and the digital output channels
are each indicated by a green LED.
An optocoupler is used for electrical isolation between the bus and the field
side.
Any configuration of the counter modules is possible when designing the
fieldbus node. Grouping of module types is not necessary.
The field side supply voltage of 24 V for the counter module is derived from
adjacent I/O modules or from a supply module.The supply voltage for the
field side is made automatically through the individual I/O modules by means
of power jumper contacts.
Warning
The maximum current of the internal power jumper contacts is 10 A. When
configuring the system it is important not to exceed the maximum/sum
current. However, if such a case should occur, another supply module must
be added.
Attention
This module has no power contacts for receiving and transmitting the ground
(earth) potential. A supply module is required, if the adjacent modules need
to be connected to the ground.
Note
Use an appropriate supply module (e.g. 750-602) if an electrically isolated
voltage supply is required!
The module 750-404 and the variations 750-404/000-002 and 750-404/000-
004 can be used with all couplers/controllers of the WAGO-I/O-SYSTEM 750
(except for the economy types 750-320, 750-323, 750-324 and 750-327 and
the ModBus controllers 750-812, 750-812/025-000 and 750-814).

750-404 [Up/Down Counter /100 kHz] • 15
Display Elements
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.4 Display Elements
LED Channel Meaning State
off Input U/D: Signal voltage (0),
Backwards counting
A Status
U/D green Input U/D: Signal voltage (1),
Forward counting
off Digital Output DO 1 reset
B Status
DO 1 green Digital Output DO 1 setting
off Input CLOCK: Signal voltage (0)
C Status
CLOCK green Input CLOCK: Signal voltage (1)
Counting pulse
off Digital Output DO 2 reset
13 14
C
D
B
A
C
D
A
B
Fig. 2.1.2-2: Display
Elementsg041402x
D Status
DO 2 green Digital Output DO 2 setting
2.1.2.5 Schematic Diagram
0V
10nF
10nF
270pF
270pF
270pF
DO
5V
Logic
24V
DO
24V
0V
DO 1 DO 2
10nF
1
2
3
4
5
6
7
8
750-404
U/D
U/D
U/D
CLOCK
CLOCK
CLOCK
Fig. 2.1.2-3: Schematic Diagram g040401e

16 •750-404 [Up/Down Counter /100 kHz]
Technical Data
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.6 Technical Data
Module Specific Data
Number of outputs 2
Number of counters 1
Output current 0.5 A short-circuit-protected
Current consumption (internal) 15 mA
Voltage via power jumper contacts DC 24 V (-15 % ... + 20 %)
Signal voltage (0): DC –3 V ... +5 V
(1): DC +15 V ... +30 V
Switching rate max. 100 kHz (750-404, 750-404/000-004)
10 kHz (750-404/000-002)
Input current typ. 6 mA
Counter depth 32 bits data
Isolation 500 V (System/Supply)
Internal bit width 32 bits data
8 bits control /status
Dimensions W x H* x L
* from upper edge of 35 DIN rail 12 mm x 64 mm x 100 mm
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)
Approvals (cf. Chapter 2.2 of the Coupler/Controller Manual)
CULUS (UL508)
ABS (American Bureau of Shipping)
BV (Bureau Veritas) (applied for)
DNV (Det Norske Veritas) Cl. B
GL (Germanischer Lloyd) (applied for) Cat. A, B, C, D
KR (Korean Register of Shipping)
LR (Lloyd's Register) Env. 1, 2, 3, 4
NKK (Nippon Kaiji Kyokai)
PRS (Polski Rejestr Statków)
RINA (Registro Italiano Navale)
CULUS (ANSI/ISA 12.12.01) Class I Div2 ABCD T4

750-404 [Up/Down Counter /100 kHz] • 17
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
DEMKO / IEC 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
"AUTOMATION Tools and Docs" (Item-No.: 0888-0412)
or in the internet under: http://www.wago.com Documentation 
WAGO-I/O-SYSTEM 750 System Description
2.1.2.7 Process Image
Using the I/O module 750-404, a 5 byte input and output process image can be
transferred to the fieldbus coupler / controller via one logical channel.
The transfer of the setting counter value in binary format is made via 4 output
bytes (D0 ... D3) and the transfer of the counter reading in binary format is
made via 4 input bytes (D0 ... D3). The control byte C0 serves for setting the
counter and the outputs. The status byte S0 shows the status of the counter and
the inputs and outputs.
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.
Input data Output data
S0 Status byte 0 C0 Control byte 0
D0 Counter value byte 0 (LSB) D0 Set value byte 0 (LSB)
D1 Counter value byte 1 D1 Set value byte 1
D2 Counter value byte 2 D2 Set value byte 2
D3 Counter value byte 3 (MSB) D3 Set value byte 3 (MSB)

18 •750-404 [Up/Down Counter /100 kHz]
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.7.1 Control- / Status byte 750-404
The control byte C0 serves for setting and locking the counter and for setting
the outputs. The status byte S0 shows the status of the counter and the inputs
and outputs.
Control byte
B7 B6 B5 B4 B3 B2 B1 B0
0 0 Set
counter Lock counter Set output
DO 2
Set
output
DO 1
0 0
0 This constant must be set to zero.
Status byte
B7 B6 B5 B4 B3 B2 B1 B0
X X Counter
is set Counter is
blocked
actual
signal at
output
DO 2
actual
signal at
output
DO 1
actual
signal at
input
U/D
actual
signal at
input
CLOCK
X This value is not evaluated.
With the control and status byte the following tasks are possible:
Set Counter:
Put Bit 5 into the control byte. The counter with the 32 bit value is loaded into
output bytes 0-3. As long as the bits are set, the counter can stop and
information is stored. The ensuing data of the counter will be conveyed to the
status byte.
Lock Counter:
Bit 4 is set into the control byte, then the count process is suppressed. Bit 4 in
the status byte communicates the suppression of the counter.
Set/ Reset Outputs:
Bits 2 and 3 set the additional two outputs of the counter module.

750-404 [Up/Down Counter /100 kHz] • 19
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.7.2 Control- / Status byte 750-404/000-002
The control byte C0 serves for starting the periodic counter pulse
measurement and for setting the outputs. The status byte S0 shows the status
of the counter and the inputs and outputs.
Control byte
B7 B6 B5 B4 B3 B2 B1 B0
0 0 Start of
the
periodic
counting
0 Set
output
DO 2
Set
output
DO 1
0 0
0 This constant must be set to zero.
Status byte
B7 B6 B5 B4 B3 B2 B1 B0
X X Counting
starting X actual signal at
output
DO 2
actual
signal at
output
DO 1
actual
signal at
input
U/D
Toggelbit
for end of
the
record
X This value is not evaluated.
The counter begins processing with pulses at the CLOCK input and counts the
pulses in a special time span. The time span is given as 10 s.
The state of the counter is stored in the process image until the next period.
After the recording the counting starts again at 0.
The activation of the counting and the synchronization with the SPS is made
by a handshake in the control and status byte.
The end of the counting period and thus the new process data is signaled by a
toggle bit in the status byte.

20 •750-404 [Up/Down Counter /100 kHz]
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.2.7.3 Control- / Status byte 750-404/000-004
The control byte C0 serves for setting and locking the counter and for setting
the outputs dependent or independently on the counter reading. The status byte
S0 shows the status of the counter and the inputs and outputs.
Control byte
B7 B6 B5 B4 B3 B2 B1 B0
0 0 Set
counter Lock Counter Set output
DO 2
Set
output
DO 1
Output
O2
activated
dependin
g of the
counter
value
Output
O1
activated
dependin
g of the
counter
value
0 This constant must be set to zero.
Status byte
B7 B6 B5 B4 B3 B2 B1 B0
X X Counter
is set Counter is
blocked
actual
signal at
output
DO 2
actual
signal at
output
DO 1
actual
signal at
input
U/D
actual
signal at
input
CLOCK
X This value is not evaluated.
With the control and status byte the following tasks are possible:
Set Counter:
Put Bit 5 into the control byte. The counter with the 32 bit value is loaded into
output bytes 0-3. As long as the bits are set, the counter can stop and
information is stored. The ensuing data of the counter will be conveyed to the
status byte.
Lock Counter:
Bit 4 is set into the control byte, then the count process is suppressed. Bit 4 in
the status byte communicates the suppression of the counter.
Switching the outputs dependent of the counter:
The bits 0 and 1 activate the function: output dependent setting of binary
outputs. If the counter reading 0x80000000 is exceeded, output DO 1 is
activated. For the output DO 2 only the bottom 16 bits of the counter reading
are taken into account, which means that output DO 2 is activated as soon as
the counter reading 0x8000 is exceeded. Having reached 0 again, the outputs
are reset.