W&T Web-IO Digital 4.0 User manual

Web-IO Digital 4.0
gvalid for:
#57733 Web-IO 4.0 Digital 4xIn/Out
#57736 Web-IO 4.0 Digital 16xIn/Out
Release 1.51 October 2021
Manual
Installation, Startup and Application

© 10/2021 by Wiesemann und Theis GmbH
Microsoft, MS-DOS, Windows, Winsock and Visual Basic
are registered trademarks of the Microsoft Corporation.
Subject to error and alteration:
Since it is posssible that we make mistakes, you mustn’t use any of our statements
without verication. Please, inform us of any error or misunderstanding you come
about, so we can identify and eliminate it as soon as possible.
Carry out your work on or with W&T products only to the extent that they are descri-
bed here and after you have completely read and understood the manual or guide.
We are not liable for unauthorized repairs or tampering. When in doubt, check rst
with us or with your dealer.

3
Inhalt
Content
1. Legal notices...................................................................... 5
Warning notice system ...................................................................................... 5
Qualied personnel ............................................................................................ 5
Disposal.............................................................................................................. 6
Symbols on the product ..................................................................................... 6
2. Safety notices .................................................................... 7
General notices .................................................................................................. 7
Intended use....................................................................................................... 7
Electrical safety.................................................................................................. 7
Batteries ............................................................................................................. 8
3. Quick Startup ................................................................... 11
Network connection......................................................................................... 11
Supply voltage.................................................................................................. 11
IP address assignment .................................................................................... 11
Function test .................................................................................................... 11
4. Product introduction ....................................................... 12
Hardware.......................................................................................................... 12
Network security .............................................................................................. 13
Access rights.................................................................................................... 13
Application and access possibilities................................................................ 14
Actions ............................................................................................................. 15
5. Installation and wiring...................................................... 16
Wiring #57733.................................................................................................. 17
Wiring #57736.................................................................................................. 22

4
Inhalt
Network connection......................................................................................... 24
6. Initial start-up .................................................................. 25
Assigning the IP address ................................................................................. 25
Changing the set IP parameters ...................................................................... 26
7. Basic settings................................................................... 27
Conguring Inputs and Outputs....................................................................... 27
Date / Time....................................................................................................... 28
Language / Info ................................................................................................ 28
Password ......................................................................................................... 28
Certicates....................................................................................................... 29
8. Basic applications............................................................ 30
Browser access ............................................................................................... 30
Sending email................................................................................................... 32
Box-to-Box........................................................................................................ 33
9. Integration into existing systems..................................... 34
MQTT................................................................................................................ 34
REST 36
OPC DA............................................................................................................. 40
OPC UA............................................................................................................. 41
SNMP ............................................................................................................... 43
Modbus-TCP .................................................................................................... 44
10. Actions ........................................................................... 47
Trigger .............................................................................................................. 47
Actions ............................................................................................................. 49
11. Access from own applications ...................................... 53
Access using TCP/IP sockets.......................................................................... 53
12. Appendix ........................................................................ 56
Alternatives for IP address assignment .......................................................... 56
Firmware update .............................................................................................. 57
Emergency access ........................................................................................... 58
12. Technical data................................................................ 59

5
Rechtliche Hinweise
1. Legal notices
Warning notice system
This manual contains notices that must be observed for your personal safety as
well as to prevent damage to equipment. The notices are emphasized using a war-
ning sign. Depending on the hazard level the warning notices are shown in decrea-
sing severity as follows.
1DANGER
Indicates a hazard which results in death or severe injury if no appropriate preventi-
ve actions are taken.
1WARNING
Indicates a hazard which can result in death or severe injury if no appropriate pre-
ventive actions are taken.
1CAUTION
Indicates a hazard that can result in slight injury if no appropriate preventive
actions are taken.
1NOTE
Indicates a hazard which can result in equipment damage if no appropriate preven-
tive actions are taken.
If more than one hazard level pertains, the highest level of warning is always used.
If the warning sign is used in a warning notice to warn of personal injury, the same
warning notice may have an additional warning of equipment damage appended.
Qualied personnel
The product described in this manual may be installed and placed in operation only
by personnel who are qualied for the respective task.
The documentation associated with the respective task must be followed, especial-

6
Rechtliche Hinweise
ly the safety and warning notices contained therein.
Qualied personnel are dened as those who are qualied by their training and
experience to recognize risks when handling the described products and to avoid
possible hazards.
Disposal
Electronic equipment may not be disposed of with normal waste, but rather must be
brought to a proper electrical scrap processing facility.
Symbols on the product
Symbol Explanation
CE Mark
The product conforms to the requirements of
the relevant EU Directives.
WEEE Mark
The product may not be disposed of with nor-
mal waste, but rather in accordance with local
disposal regulations for electrical scrap.

7
Sicherheitshinweise
2. Safety notices
General notices
This manual is intended for the installer of the Web-IOs described in the manual and
must be read and understood before starting work. The devices are to be installed
and put in operation only by qualied personnel.
Intended use
1DANGER
The Digital Web-IOs manufactured by Wiesemann & Theis are network remote swit-
ches with integrated web server and digital in- and outputs. They are used as a re-
mote switching and monitoring unit, accessible via TCP/IP-Ethernet using various
web and network protocols in accordance with the present manual.
Non-intended use is any other use or any modication to the described devices.
Electrical safety
1WARNING
Before beginning any kind of work on the Web-IO you must completely disconnect it
from power. Be sure that the device cannot be inadvertently turned on again!
The Web-IO may be used only in enclosed and dry rooms.
The device should not be subjected to high ambient temperatures or direct sunlight,
and it should be kept away from heat sources. Please observe the limits with res-
pect to maximum ambient temperature.
Ventilation openings must be clear of any obstacles. A distance of 10-15 cm be-
tween the Web-IO and nearby heat sources must be maintained.
Input voltage and output currents must not exceed the rated values in the specica-
tion.
When installing be sure that no stray wires stick out through the ventilation slit of

8
Sicherheitshinweise
the Web-IO into the housing. Ensure that no individual wires stand off from leads,
that the lead is fully contained in the clamp and that the screws are tightly fastened.
Fully tighten screws on unused terminals.
The power supply used for the Web-IOs must absolutely ensure safe isolation of
the low-voltage side from the supply mains according to EN60950-1 and must have
“LPS“ designation.
EMC
1NOTE
Only shielded network cables may be used for connecting the Web-IOs to the net-
work.
In this case the Web-IOs meet the noise immunity limits for industrial applications
and the stricter emissions limits for households and small businesses. Therefore
there are no EMC-related limitations with respect to the usability of the devices in
such environments.
The complete Declarations of Conformity for the devices described in the manual can
be found on the corresponding Internet page at the W&T homepage: http://www.wut.
de.
Batteries
The Web-IO Digital 4.0 contains a 3V lithium-manganese dioxide button battery type
CR1632 for backing up the internal clock. This battery has an expected lifetime of
10 years and must be replaced only by a battery of the same type.
When using the Web-IO Digital 4.0 in a network environment with access to a time
server, the battery is not essential for correct function of the device and can be
removed.
1CAUTION
The battery may be removed or replaced by an electrotechnical specialist, only.
To remove the battery, open the housing as follows:

9
Sicherheitshinweise
#57733
Rasthaken
Batterie
#57736
Batterie
Rasthaken
Use a pointed object to press on the latching hooks on the side of the housing and
at the same time pull the bottom of the housing out of the top shell.
Then remove the stack of PCBs downwards from the housing.
The buffer battery for the clock module is located in a holder on the upper PCB.
After removing/replacing the battery, reassemble in reverse order.

10
Sicherheitshinweise
Batteries and rechargeables must not be disposed of with normal waste, recycling
of used batteries and rechargeables is required by law. Used batteries may contain
harmful substances which can damage the environment or your health if not
disposed of properly.
Batteries also contain important raw materials such iron, zinc, manganese or nickel
and are recycled.

11
Schnellinbetriebnahme
3. Quick Startup
Network connection
1 2 3456 7 8
RJ45
Supply voltage
#57733 #57736
+ -
0
+ - + - + - + -
1 2 3
max. 4x500mA Out
+ -
12-48V
V
DD Out
V
DD IN
+
Inputs/Outputs
12 - 24V
Outputs: max. 4x500mA
VCC
01 2 3
12 - 24V DC
150mA +
Output Load
- - - -
-
+
Outp. =ON
Inp. =ON
+
- - + +
12 - 24 V DC
150mA
Vcc
+ - - +
6 7
+-
12 - 24V
For the rst test leave the input and outputs unwired.
IP address assignment
Install Wutility-Tool (Download: http://wut.de/wutility)
After starting Wutility your Web-IO appears in the device list. If multiple devices are
shown, please identify your device by the Mac address, that is printed on a white
sticker at the device: “EN = 00c0:3d......“ . If there is a DHCP server in your network,
you can use the assigned IP address for a rst test. Using the IP address icon in
WuTility you can assign a free static IP address instead to the Web-IO.
Function test
Open the Web page of the Web-IO in a web browser using the address http://<IP-
address of the Web-IO>.

12
Produktvorstellung
4. Product introduction
Hardware
The Web-IO devices differ in their mechanical design and hardware conguration:
#57733 - Web-IO 4.0 Digital 4xIn/Out
Network interface: RJ45 10/100BaseT / PoE
Power: Screw terminal 12 … 24V DC
Inputs/Outputs: 4 channels optionally as input or output
Input switching threshold +9.5V (+/-1V)
Output 12 ... 24V DC current driving max. 500mA
#57736 - Web-IO 4.0 Digital 16xIn/Out
Network interface: RJ45 10/100BaseT
Power: 12 .. 24V DC
Inputs/Outputs: 16 channels optionally as input or output
Input switching threshold +9.5V (+/-1V)
Output 12 ... 24V DC current driving max. 500mA
Gerätestatus, Fehlerstatus und Status der Inputs/Outputs werden über entsprechen-
de LEDs signalisiert.

13
Produktvorstellung
Network security
All available network services are congurable and must rst be enabled by the
administrator. By default only browser access, inventorying via Wutility, and the port
for initializing rmware updates are enabled. DHCP is also enabled.
You can explicitly specify for all communication paths whether the outputs may
be accessible. A list of the currently open TCP and UDP ports can be found in the
navigation tree under Port list.
Access rights
The Web-IO is congured and operated by using a web browser. There are three
authorization levels for access:
Guest
The guest has read-access to the status of inputs, counters and outputs without
logging in.
User
A user can switch the outputs after logging in with a password if it is enabled for
access via the browser.
Administrator
After logging in with a password the administrator has unrestricted conguration
and access rights.
By default no passwords are assigned for the Web-IO. Simply click on the Login
button.
After login the navigation tree on the left side can be used to open the enabled con-
guration areas. For help and information about the respective conguration possi-
bilities click the Info buttons on the right side.
Clicking the Apply button makes the settings immediately effective.
For all other descriptions affecting the conguration, access with administrator login
is required.

14
Produktvorstellung
Application and access possibilities
Browser access
Using password protected access, the status of inputs, counters and outputs can
be monitored by browser access. You can also switch the outputs with the required
access rights.
It is also possible to upload a web page created entirely according to your own
needs to the device.
Email sending
The Web-IO offers the option of sending email messages depending on IO states or
at xed intervals. The Web-IO also supports authentication procedures prescribed
by public providers.
Box-to-Box
Two Web-IOs can be congured so that the outputs of the rst Web-IO follow the
inputs of the second. This works in both directions when congured accordingly.
Integration into existing systems
The Web-IO allows communication using several protocols for integration into
existing systems:
MQTT
In the context of Industry 4.0 and the “Internet of Things”, MQTT is an innovative
communication channel. The Web-IO can determine the status of the IOs via MQTT
Publish to an MQTT broker and even accept the request to perform a switching
action via MQTT Subscribe.
REST
REST (Representational State Transfer) is another web-based protocol that can be
used to integrate the Web-IO into the environment of Industry 4.0 and the Internet of
Things.

15
Produktvorstellung
Web-API - HTTP requests / AJAX
The status of inputs, counters and outputs can be queried using HTTP requests. In
addition the outputs can be directly controlled using HTTP requests.
OPC DA / OPC UA
Together with the W&T OPC Server the Web-IO can be accessed from any OPC client
applications.
SNMP
The status of inputs, counters and outputs as well as the conguration and error
status can be obtained via SNMP. For easy integration into SNMP systems, a private
MIB is available which can be downloaded directly from the device.
Modbus-TCP
With Modbus TCP, the Web IO supports one of the most common industrial proto-
cols. Any Modbus-TCP master can access the IOs by reading and writing the corres-
ponding registers.
Individual applications
The Web-IO offers TCP and UDP socket access from your own applications.
In both cases the Web-IO supports addressing using command strings, but also
by exchanging binary structures. With the support of HTTP requests your own web
applications (e.g. with PHP or JavaScript) can also access the Web-IO.
Actions
Depending on congurable events at the IOs, the Web-IO can initiate actions such
as sending an email message. Other actions include sending syslog messages or
SNMP traps, writing to a le via FTP, sending data via TCP or UDP, or switching its
own outputs.

16
Montage und Verdrahtung
5. Installation and wiring
The described Web-IOs may be installed and wired by qualied personnel only. The
generally applicable state of the art and corresponding prevailing regulations and
standards must be observed.
Montage #57733
The Web-IO 4.0 Digital 4xIn/Out is intended for installation in the control cabinet
or sub-distribution. For mechanical xation, the Web-IO should be snapped onto
a 35mm top-hat rail according to DIN EN 50022. In doing so, the Web IO takes up
45mm in width.
Montage #57736
The Web-IO 4.0 Digital 4xIn/Out is intended for installation in the control cabinet
or sub-distribution. For mechanical xation, the Web-IO should be snapped onto
a 35mm top-hat rail according to DIN EN 50022. In doing so, the Web IO takes up
107mm in width.

17
Montage und Verdrahtung
Terminal assignment 57733
Terminal Description / Function
1+ Vcc - Device supply 12-24V 150mA@24V
2+ Vcc - Device supply 12-24V 150mA@24V
3GND / Device supply
4Input 0 Switching threshold +8V / Output 0 24V max. 500mA
5GND - Output 0
6Input 1 Switching threshold +8V / Output 1 24V max. 500mA
7GND - Output 1
8Input 2 Switching threshold +8V / Output 2 24V max. 500mA
9GND - Output 2
10 Input 3 Switching threshold +8V / Output 3 24V max. 500mA
11 GND - Output 3
Wiring #57733
Connection of the supply voltage VDD
Connection of the supply voltageThe Web IO is supplied with a DC voltage between
12 and 24V.
1 8
Web-IO 4.0 #57733
Digital, 4xIn/Out
Power
Status
Error
Reset
Outputs: max. 4x500mA
Vcc
01 2 3
12 - 24V DC
150mA +
Output Load
Input/Output Mode Check
and LED Test shown on Reset
- - - -
-
+
Outp. = ON
Inp. = ON
+
URL: ______________
+-
12 - 24V
GND

18
Montage und Verdrahtung
With a voltage supply of 24V, which is typical in industry, the Web IO draws approx.
100mA current.
IO channels that are congured as outputs are also supplied via VDD. The loads to
be switched must also be taken into account in the current consumption.
Input wiring
Each of the four IO channels has a plus and a minus terminal.
The signal input for IO channels that are operated as inputs is on the respective plus
terminal. When using potential-free contacts, we recommend switching the auxiliary
voltage VDD-Out via the contact on the plus terminal. In this case, the minus termi-
nals do not have to be connected. Here is an example of the wiring of input 1.
Web-IO 4.0 #57733
Digital, 4xIn/Out
Power
Status
Error
Reset
Outputs: max. 4x500mA
VCC
01 2 3
12 - 24V DC
150mA +
Output Load
Input/Output Mode Check
and LED Test shown on Reset
- - - -
-
+
Outp. = ON
Inp. = ON
+
URL: ______________
+
-
12 - 24V
GND
1 8
Alternatively, an external voltage of max. +24V DC can be applied to the plus termi-
nal, whereby voltages greater than 8V (+/-1V) are recognised as ON signal. In this
case, the reference ground must be applied to the respective minus terminal.

19
Montage und Verdrahtung
Output wiring
IO channels that are congured as outputs operate as current drivers and can be
loaded with max. 500mA each. The positive voltage applied to VDD .is switched to
the positive terminal of the IO channel, whereby the negative terminal is used as re-
ference ground.
Here is an example of the wiring of output 1.
+-
12 - 24V
GND
Last
Load
+ -
Web-IO 4.0 #57733
Digital, 4xIn/Out
Power
Status
Error
Reset
Outputs: max. 4x500mA
VCC
01 2 3
12 - 24V DC
150mA +
Output Load
Input/Output Mode Check
and LED Test shown on Reset
- - - -
-
+
Outp. = ON
Inp. = ON
+
URL: ______________
1 8

20
Montage und Verdrahtung
Terminal assignment #57736
Wiesemann &Theis GmbH
Porschestraße 12
42279 Wuppertal
URL: _______________________
#57736
Digital 16xIn/Out
Web-IO 4.0
W&T
www. Wu T.de
Power
Status
Warning
Error
Reset
GND
-
Out = ON
In = ON max. 16mA
+
max. Output Load 16 x 500mA In/Out Mode Check on Reset
- - + +
12 - 24 V DC
150mA
+ Output Load
Vcc
++ + + + + +- - - - - - - - +
0 1 2 3 4 5 6 7
8 9 10 11 12 13 14 15
+ + + + + + + +- - - - - - -
Klemme 1
112 Klemme 2 112
Klemme 3
112 Klemme 4 111
1 4
Vcc
Terminal Vcc Description / Function
1GND / Device supply
2GND / Device supply
3+ Vcc - Device supply 12-24V max. 2150mA@24V
4+ Vcc - Device supply 12-24V max. 2150mA@24V
Terminal 1 Bezeichnung / Funktion
1+ Vdd - Auxiliary voltage 24V 2mA@24V for Input activation
2Input 0 Switching threshold +8V / Output 0 24V max. 500mA
3GND / Reference GND for Output
4GND / Reference GND for Output
5Input 1 Switching threshold +8V / Output 1 24V max. 500mA
6+ Vdd - Auxiliary voltage 24V 2mA@24V for Input activation
7+ Vdd - Auxiliary voltage 24V 2mA@24V for Input activation
8Input 2 Switching threshold +8V / Output 2 24V max. 500mA
9GND / Reference GND for Output
10 GND / Reference GND for Output
11 Input 3 Switching threshold +8V / Output 3 24V max. 500mA
12 + Vdd - Auxiliary voltage 24V 2mA@24V for Input activation
Terminal 2 Description / Function
1+ Vdd - Auxiliary voltage 24V 2mA@24V for Input activation
2Input 4 Switching threshold +8V / Output 4 24V max. 500mA