Measurement Computing WebDAQ 504 Bedienungsanleitung

WebDAQ 504 User's Guide

September 2019. Rev 4

Contents

About this User's Guide

Introducing the WebDAQ 504

Seng up the WebDAQ

Funconal Details

Speciﬁcaons

EU Declaraon of Conformity

Trademark and Copyright Informaon

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either trademarks or registered trademarks of Measurement Compung Corporaon. Refer to the Copyrights &

Trademarks secon on mccdaq.com/legal for more informaon about Measurement Compung trademarks.

Other product and company names menoned herein are trademarks or trade names of their respecve

companies.

stored in a retrieval system, or transmied, in any form by any means, electronic, mechanical, by photocopying,

recording, or otherwise without the prior wrien permission of Measurement Compung Corporaon.

Noce

Measurement Compung Corporaon does not authorize any Measurement Compung Corporaon product

for use in life support systems and/or devices without prior wrien consent from Measurement Compung

Corporaon. Life support devices/systems are devices or systems that, a) are intended for surgical implantaon

into the body, or b) support or sustain life and whose failure to perform can be reasonably expected to result in

injury. Measurement Compung Corporaon products are not designed with the components required, and are

not subject to the tesng required to ensure a level of reliability suitable for the treatment and diagnosis of

people.

About this User's Guide

This user's guide describes the Measurement Compung WebDAQ 504 data acquision device, the WebDAQ

web interface, and lists device speciﬁcaons.

Where to ﬁnd more informaon

Addional informaon about the WebDAQ Series of internet enabled data loggers is available on our website at

www.mccdaq.com/WebDAQ. You can also contact Measurement Compung Corporaon with speciﬁc

quesons.

WebDAQ web interface: Open the Help window for informaon about using WebDAQ soware.

Knowledgebase: kb.mccdaq.com

WiFi adapters approved for use with WebDAQ Series hardware: www.mccdaq.com/pdfs/manuals/wd-

wiﬁ.pdf

Tech support form: www.mccdaq.com/support/support_form.aspx

Email: [email protected]

Phone: 508-946-5100 and follow the instrucons for reaching Tech Support

For internaonal customers, contact your local distributor. Refer to the Internaonal Distributors secon on our

website at www.mccdaq.com/Internaonal.

Hazardous voltages

Take the following precauons if you connect hazardous voltages to the WebDAQ 504. A hazardous voltage is a

voltage greater than 42.4 Vpk or 60 VDC to earth ground.

Ensure that hazardous voltage wiring is performed only by qualiﬁed personnel adhering to local electrical

standards.

Do not mix hazardous voltage circuits and human-accessible circuits on the same device.

Make sure that devices and circuits connected to the WebDAQ are properly insulated from human

contact.

Hazardous locaons: The WebDAQ is not cerﬁed for use in hazardous locaons.

Contents

WebDAQ 504 User's Guide

page 2

Introducing the WebDAQ 504

The WebDAQ 504 is part of the WebDAQ Series of Internet enabled data loggers. WebDAQ 504 is a

vibraon/acousc data acquision and logging device that provides the following features:

4 simultaneously sampled analog inputs

24-bit resoluon

Data rates up to 51.2 kS/s per channel

AC/DC coupling

IEPE signal condioning

An-aliasing ﬁlters

Overvoltage protecon

Four bidireconal, isolated DIO

10/100 Ethernet interface

Support for USB WiFi adapters for wireless connecvity

Support for USB mass storage devices and SD cards for data logging or ﬁle transfer

WebDAQ Series devices are designed with an integrated operang system and web interface. You communicate

with the device over a network connecon using the web interface opened in a web browser.

Mobile support – access the WebDAQ from any device with a web browser, such as a phone or tablet

Remote monitoring and control

Run simple to complex logging operaons

Flexible task scheduling

The WebDAQ is designed with the Raspberry Pi Compute Module, featuring a quad core processor with speeds

up to 1.2 GHz, 1 GB RAM and 4 GB Flash memory.

Integrated operang system and web service

The WebDAQ is a complete data acquision system containing an embedded operang system and web server.

The operang system resides in internal ﬂash memory, and includes a web service and device driver. All

conﬁguraon, acquision, and data management is performed using the web interface.

Ethernet interface

The WebDAQ has a built-in 10/100 BASE-T auto-negoaon, high-speed communicaon port. You can access

and conﬁgure your WebDAQ from anywhere with access to the network to which it is connected. A unique

MAC address is assigned to each device at the factory. You conﬁgure the Ethernet connecon sengs through a

web interface. The default network device name uses the format webdaq-xxxxxx, where xxxxxx are the lower

six digits of the factory-assigned MAC address. You can change this name with the web interface.

Open-source soware

WebDAQ ﬁrmware uses open-source soware components. Refer to Licenses for the licensing informaon of

each component. Open-source code is available upon request from inf[email protected].

WebDAQ 504 User's Guide

page 3

Funconal block diagram

Device funcons are illustrated in the block diagram shown here.

Figure 1. Funconal block diagram

Saving large data ﬁles

If you expect to acquire a large amount of data to a single ﬁle when logging to external media, do not use

media formaed with the FAT32 ﬁle system. FAT32 is limited to a 4 GB maximum ﬁle size. If the log ﬁle on

FAT32 media grows beyond that size, a "File too large" error is returned and the acquision stops. Before

starng a logging session of this type, reformat the media using a diﬀerent ﬁle system such as NTFS. Refer to

the Frequently Asked Quesons help topic for more informaon about ﬁle systems.

Unpacking

As with any electronic device, you should take care while handling to avoid damage from stac

electricity. Before removing the board from its packaging, ground yourself using a wrist strap or by simply

touching the computer chassis or other grounded object to eliminate any stored stac charge.

Contents

WebDAQ 504 User's Guide

page 4

Seng up the WebDAQ

Connecng to a local area network

The WebDAQ 504 requires a TCP/IP connecon to a network or the Ethernet port of a computer. A standard

Ethernet cable is shipped with the device. The WebDAQ IP address type is set by default for DHCP/Link-Local.

When connected to a network, the device ﬁrst aempts to receive an IP address from a DHCP server. If this

fails, a link-local address is used. Use of a stac address requires conﬁguraon via the web interface. The IP

address idenﬁes the WebDAQ 504 on the network, and is used to access the web interface.

Connecng to a network with DHCP enabled

Connect one end of the Ethernet cable to the connector on the WebDAQ rear panel, and connect the other end

to a 10Base-T or 100Base-TX compable Ethernet port, hub, or switch.

Once the device is detected, DHCP assigns an address. A diﬀerent address may be assigned each me the

hardware is connected to the network.

WiFi support

Aer successfully conﬁguring a wired connecon, you can use the web interface to conﬁgure the

WebDAQ for wireless communicaon. Refer to the Conﬁguring the WebDAQ for wireless

communicaon secon for more informaon.

Connecng directly to a PC

Connect one end of the Ethernet cable to the connector on the WebDAQ rear panel, and connect the other end

directly to the Ethernet port on a PC. The WebDAQ aempts to communicate with the host PC using

169.254.100.100 – the link-local address stored on the device. The host PC may accept this address or use a

diﬀerent address. The link-local address is valid only for communicaons between the WebDAQ and the host PC

to which it is connected.

Connecng the external power adapter

Connect the network cable before connecng to external power

Connecng to the external supply before installing on a network results in the device aempng to

auto-negoate a network address before one is available.

An external power adapter is included with each shipment (PS 9V1AEPS230V).

Connect the adapter to the power connector labeled EXT PWR on the device rear panel, and plug the AC

adapter into an electrical outlet.

Press the POWER buon. The POWER LED on the rear panel turns yellow as the hardware starts up, and green

when it is ready for use.

WebDAQ 504 User's Guide

page 5

Detecng the device on a network

WebDAQ uses the "zeroconf" zero-conﬁguraon protocol to announce its presence on a local area network.

Zeroconf uses a device name which can be accessed from other computers on the network.

Zero-conﬁguraon networking is helpful to ﬁnd your WebDAQ hardware on the network

The easiest way to add zeroconf support to Windows is to install Bonjour Print Services. Bonjour

soware is Apple's implementaon of zero-conﬁguraon networking, and is readily available as a free

download – open a browser window and search for Bonjour Print Services.

Zeroconf is built into popular applicaons such as Apple ITunes® and instant messaging soware, so

your computer may already support it.

Many Linux systems will have the avahi version of zeroconf installed by default, so it’s likely zeroconf is

available if you’re running Linux.

Accessing the WebDAQ web interface

To access the WebDAQ web interface, open a browser window and enter hp://webdaq-xxxxxx.local, where

xxxxxx is the last 6 digits of the MAC address. The MAC address is on a label at the boom of the WebDAQ

enclosure.

If your network is conﬁgured for the zeroconf protocol, the WebDAQ web interface opens.

If the web interface does not open or an error is returned, install a device discovery tool such as Bonjour

Print Services. Refer to the note above about zero-conﬁguraon networking.

The WebDAQ web interface is shown here. Note that this ﬁgure shows a WebDAQ schedule that includes two

jobs.

Figure 2. WebDAQ web interface

Use the WebDAQ web interface to conﬁgure hardware and acquision opons, schedule and run jobs, and to

view and manage data. The Help window provides details about all components on the web interface.

Once a connecon is established and you can communicate to the device, you can change the conﬁguraon for

other network scenarios.

* The latest version of Chrome, Firefox, Safari, UC Browser, or Opera recommended. Compable with IE v11

with the latest Windows Updates installed. Not recommended for use with other IE versions or the Edge

browser.

WebDAQ 504 User's Guide

page 6

Conﬁguring the WebDAQ for wireless communicaon

Once communicaon is established on a wired network, you can connect a WiFi adapter to the USB port and

use the web interface to conﬁgure the WebDAQ for communicaon over a wireless network. With the WebDAQ

connected through the wired connecon, perform the following procedure.

1. Connect an approved WiFi adapter to the USB port on the WebDAQ rear panel.

A list of WiFi adapters approved for use with WebDAQ Series hardware is available on our website at

www.mccdaq.com/pdfs/manuals/wd-wiﬁ.pdf.

2. Open the WebDAQ web interface in a browser window and go to the Device window, Network tab.

3. Select WiFi. Once the list of available networks updates, select the wireless network that you want to

connect to, and enter the password, if any.

If the connecon is successful, the selected wireless network will show above this list with a checkmark

next to it.

You can click on the selected network to open a WiFi Network Sengs dialog box where you can forget the

current network or conﬁgure the IP address type (DHCP/Link-Local or Stac).

4. Disconnect the Ethernet cable from the LAN connecon.

Changing to a wireless network may require a reboot

If a connecon can't be established aer changing the network, you may need to reboot the operang

system and restart the WebDAQ using the Power buon.

Conﬁguring the network router for communicaon across networks

To communicate with the WebDAQ over the internet from a computer connected to a diﬀerent network, you

must change the network conﬁguraon of the network router.

Cauon! This procedure should only be performed by a network administrator or computer

professional. Incorrect sengs can signiﬁcantly disrupt a network.

In the following procedure, the WebDAQ is installed on the host LAN, the computer is installed on the client

LAN, and it is assumed that you have successfully connected the device to a local network.

1. Determine the IP address of the WebDAQ – open the Device window from the web interface, and note the

IP Address value on the Network Sengs tab.

2. Conﬁgure your router so that the address determined above is a stac address. The procedure for

accomplishing this varies between routers; refer to your router documentaon for instrucons.

3. Conﬁgure the ﬁrewall/router to forward an unused port to port 80 on the WebDAQ at the IP address

conﬁgured for the device. Note the stac IP address assigned to the router – this is referred to as the WAN

address.

4. To access your WebDAQ from a remote locaon, enter the WAN address followed by the port selected

above preceded by a colon in the web browser. The format of the address entered in the browser is:

00.000.00.00:00000 (WAN address of router:port selected for the WebDAQ).

WebDAQ 504 User's Guide

page 7

Security

Use the web interface to set the level of access to the website and to change the administrator password.

High: access to the web page requires a password.

Medium: access to the web page is permied for any user, and data can be read by any user, but changes

to the device conﬁguraon or ﬁles require a password.

Oﬀ: full access is permied for all users; no password is required.

By default, security access is set to "Oﬀ", and the administrator password is set to "admin". To change the

security level or password, open the web interface and go to the Device window, Security tab. Use the device

Reset buon to restore security sengs to factory default values.

Restoring factory default sengs

To restore network conﬁguraon and security sengs to the factory default values, use a paper clip to press

the CONFIG RESET buon. When pressed, the default network and security sengs are wrien to the device

and the WebDAQ is rebooted.

Factory default sengs

Parameter Speciﬁcaon

IP address 192.168.0.101

subnet mask 255.255.255.0

Gateway 192.168.0.1

DHCP seng DHCP + link-local enabled

Security level Oﬀ

Password for the admin

account

admin (case-sensive)

Password for the share

account

share (case-sensive)

Device name webdaq-xxxxxx, where xxxxxx is the last 6 digits of the MAC address

(printed on the label on the underside of the device).

The network sengs, security level, user account passwords and device name can be changed with the

WebDAQ web interface.

When factory defaults are restored, any shared folders or mapped drives are reset.

Contents

WebDAQ 504 User's Guide

page 8

Funconal Details

Front panel components

Figure 3. Front panel

1 Screw terminal 2 BNC connectors

Screw terminal

Connect up to four digital I/O lines (DIO0 to DI03) to the detachable screw terminal.

Figure 4. Screw terminal pinout

The digital ground (GND) terminals provide a common ground for the digital bits.

Digital connecons

The digital I/O lines are electrically isolated from the analog circuits. Each bit is individually conﬁgurable for

input or output, and features Schmi trigger inputs and open drain outputs. All DIO channels are pulled high to

5 V.

Any digital bit can be conﬁgured with the web interface as a trigger to start or stop an acquision. Any digital

bit can also be conﬁgured to trigger an alarm, and be driven high or low when an alarm occurs.

BNC connectors

Connect up to four analog inputs to the BNC connectors (AI0+/AI0– to AI3+/AI3–). All analog inputs are

simultaneously sampled at rates of up to 51.2 kS/s per channel.

Figure 5. BNC connector pinout

The center pin of the connector (AI+) provides the DC excitaon (when enabled) and posive input signal

connecon. The shell of the connector (AI–) provides the excitaon return path and AC ground reference

Use the web interface to individually conﬁgure each input for voltage or Integrated Electronic Piezoelectric

(IEPE) sensor measurements. IEPE sensor types include acceleraon, sound pressure, velocity, and force.

Voltage channels can be conﬁgured for AC or DC coupling. IEPE channels are automacally conﬁgured for AC

coupling. An internal excitaon source current is automacally enabled for IEPE sensor types.

WebDAQ 504 User's Guide

page 9

Analog signal connecons

You can connect ground-referenced or ﬂoang signal sources to the WebDAQ 504. Use a ﬂoang connecon to

minimize ground noise. If you make a ground-referenced connecon between the signal source and the

WebDAQ 504, make sure the voltage on the AI– shell is in the common-mode range to ensure proper

operaon. The AI- shell is protected against accidental contact with overvoltages within the overvoltage

protecon range. Refer to the Speciﬁcaons chapter for more informaon about operang voltages and

overvoltage protecon. Figure 6 shows a diagram for connecng a grounded signal source to the WebDAQ 504.

Figure 6. Connecng a grounded IEPE sensor

Figure 7 shows a diagram for connecng a ﬂoang signal source to the WebDAQ 504.

Figure 7. Connecng a ﬂoang IEPE sensor

Rear panel components

Figure 8. Rear panel

1 External power

connector

4 LED indicators (4) 7 Ethernet connector

2 Power buon 5 SD card slot 8 Ground connector

3 Funcon buon 6 Factory reset buon

(recessed)

9 USB connectors (2)

External power connector

Connect the external AC adapter that shipped with the device to the connector labeled EXT PWR on the rear

panel. Click here to jump to the power speciﬁcaons.

If using a diﬀerent power supply than what was shipped with the hardware, ensure that the supply has a

posive center pin.

WebDAQ 504 User's Guide

page 10

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