Measurement Computing E-DIO24 User manual

Preliminar
y
E-DIO24
Ethernet-based Digital I/O
Document Revision 2A
April 2016
User's Guide

HM E-DIO24.docx
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Other product and company namesmentioned herein are trademarks or trade names of their respective
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©2016 MeasurementComputingCorporation. All rights reserved. No part of this publicationmay be
reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic,mechanical, by
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Notice
Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for
use in life support systems and/or devices without prior written consent from Measurement Computing
Corporation. Life support devices/systems are devices or systems that, a) are intended for surgical implantation
into the body, or b) support or sustain life and whose failure to perform can be reasonably expected to result in
injury. Measurement Computing Corporation products are not designed with the components required, and are
not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of
people.

3
Preliminar
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Table of Contents
Preface
About this User's Guide .......................................................................................................................5
What you will learn from this user's guide .........................................................................................................5
Conventions in this user's guide .........................................................................................................................5
Where to find more information.........................................................................................................................5
Chapter 1
Introducing the E-DIO24.......................................................................................................................6
Ethernet interface................................................................................................................................................6
Functional block diagram...................................................................................................................................6
Chapter 2
Installing the E-DIO24...........................................................................................................................7
Unpacking...........................................................................................................................................................7
Installing the software ........................................................................................................................................7
Connecting the external power adapter ..............................................................................................................7
Connecting the E-DIO24....................................................................................................................................7
Configuring network settings .............................................................................................................................8
Address mode ................................................................................................................................................................... 8
IP address.......................................................................................................................................................................... 8
Configuring the network router for communication across networks ................................................................9
Network alarm....................................................................................................................................................9
Restoring factory default network settings.........................................................................................................9
Updating firmware..............................................................................................................................................9
Firmware update mode ..................................................................................................................................................... 9
Chapter 3
Functional Details ...............................................................................................................................10
External components ........................................................................................................................................10
Screw terminals................................................................................................................................................................10
LED status indicators.......................................................................................................................................................11
Ethernet connector...........................................................................................................................................................11
External power connector................................................................................................................................................11
Factory reset button .........................................................................................................................................................11
Signal connections............................................................................................................................................12
Digital I/O........................................................................................................................................................................12
Counter input...................................................................................................................................................................13
Voltage output .................................................................................................................................................................13
Ground.............................................................................................................................................................................13
Mechanical drawings........................................................................................................................................14
DIN-rail compatible.........................................................................................................................................................16
Chapter 4
Specifications......................................................................................................................................17
Digital input/output...........................................................................................................................................17
Counter.............................................................................................................................................................18
Memory ............................................................................................................................................................18
Power................................................................................................................................................................18
Network............................................................................................................................................................19

E-DIO24 User's Guide
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Ethernet connection .........................................................................................................................................................19
Network interface ............................................................................................................................................................19
Network factory default settings......................................................................................................................................19
Network security..............................................................................................................................................................19
LED displays and the factory reset button........................................................................................................20
Environmental ..................................................................................................................................................20
Mechanical .......................................................................................................................................................20
Signal connector...............................................................................................................................................21
Declaration of Conformity..................................................................................................................22

5
Preliminar
y
Preface
About this User's Guide
What you will learn from this user's guide
This user's guide describes the Measurement Computing E-DIO24 data acquisition device and lists device
specifications.
Conventions in this user's guide
For more information
Text presented in a box signifies additional information and helpful hints related to the subject matter you are
reading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
damaging your hardware, or losing your data.
bold text Bold text is used for the names of objects on a screen, such as buttons, text boxes, and check boxes.
italic text Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase.
Where to find more information
Additional information about E-DIO24 hardware is available on our website at www.mccdaq.com. You can
also contact Measurement Computing Corporation by phone, fax, or email with specific questions.
Knowledgebase: kb.mccdaq.com
Tech support form: www.mccdaq.com/support/support_form.aspx
Email: [e-mail]
Phone: [phone] and follow the instructions for reaching Tech Support

6
Preliminar
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Chapter 1
Introducing the E-DIO24
The E-DIO24 is an Ethernet based digital I/O data acquisition device that is compatible with TCP (IPv4 only)
and UDP network protocols. The E-DIO24 provides the following features:
24 individually-configurable digital I/O bits
±24 mA drive capability
Software-paced transfer rates up to 5 kHz (typical throughput on a local network)
One 32-bit event counter (shared with a DIO pin)
Remote network access, configuration, and alarm
Screw terminals for field wiring connections
DIN-rail mountable
Functionally equivalent to USB-DIO24 Series and USB-1024 Series hardware.
The E-DIO24 is powered by an external 5 volt power adapter included with the shipment.
Ethernet interface
The E-DIO24 has one built-in 10/100 BASE-T auto-negotiation, high-speed communication port. You can
remotely access and configure your E-DIO24 from anywhere on the network. Only one computer can control
the E-DIO24 at one time. The networking protocols are TCP and UDP.
A unique media access control (MAC) address is assigned to each device at the factory. You configure the
Ethernet connection settings through software. A network name in the format E-DIO24-xxxxxx, is assigned to
the device, where xxxxxx represents the lower six characters of the device MAC address.
Functional block diagram
E-DIO24 functions are illustrated in the block diagram shown here.
Figure 1. Functional block diagram

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Preliminar
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Chapter 2
Installing the E-DIO24
Unpacking
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the device from its packaging, ground yourself using a wrist strap or by simply
touching the computer chassis or other grounded object to eliminate any stored static charge.
Contact us immediately if any components are missing or damaged.
Installing the software
Refer to the MCC DAQ Quick Start for instructions on installing the software on the MCC DAQ CD. Refer to
the device product page on the Measurement Computing website for information about the included and
optional software supported by the E-DIO24.
Install the software before you install your device
The driver needed to run the E-DIO24 is installed with the software. Therefore, you need to install the software
package you plan to use before you install the hardware.
Connecting the external power adapter
Power to the E-DIO24 is provided with the 5 volt, 1 amp external power adapter (PS-5V1AEPS). Connect the
adapter cord to the power connector on the E-DIO24, and plug the AC adapter into an electrical outlet.
The Power LED turns on when 5 V power is supplied to the E-DIO24. If the voltage supply is less than 4.2 V
or more than 5.6 V, the POWER LED does not turn on. Refer to Figure 3 on page 11 for the location of the
Power LED.
Connecting the E-DIO24
The E-DIO24 requires a TCP and UDP connection to a network or computer.
Using the Ethernet cable provided, connect the E-DIO24 to a 10Base-T- or 100Base-TX compatible Ethernet
port, hub, or switch. When connecting the E-DIO24 for the first time, make sure that you connect to a local
network with DHCP enabled. If you are unsure whether you have access to a local network or that DHCP is
enabled on that network, you should connect directly to a Windows PC.
It may take a minute or two for the network DHCP server to detect the device and assign an address. The green
Link/activity LED on the lower left of the Ethernet connector turns on when a valid Ethernet link is established,
and blinks when network activity is detected.
Once the E-DIO24 is physically connected to the local network or PC, you can run the software (InstaCal for
example) to establish a connection. If a connection cannot be established, make sure the device is using the
default configuration by following the instructions in the Restoring factory default network settings on page 9.
Once a connection is established and you can communicate with the device, you can change the configuration
for other network scenarios.

E-DIO24 User's Guide Installing the E-DIO24
8
Configuring network settings
The following E-DIO24 network settings are software-selectable. One user at a time can connect to the device
and configure network options. The default settings are recommended for typical local networks.
Address mode
The address mode settings determine whether default IP parameters (IPv4 address, subnet mask, and gateway)
are assigned to the E-DIO24, or whether an auto-addressing method is used to assign these parameters.
DHCP or Link-Local enabled (default)
If connected to a network with a DHCP server, the service automatically assigns IP addresses to the E-DIO24.
If the connected network does not have a DHCP server, the address stored in the default IP address is assigned.
If the E-DIO24 is directly connected to a Windows PC or other host that supports link-local addressing, a link-
local address is assigned. A link-local address is valid only for communications between the E-DIO24 and the
PC to which it is connected.
DHCP Only
This setting enables configuration by a DHCP server, if one is available. The E-DIO24 is assigned an IP address
shortly after it is powered up and attached to the network.
Link-Local Only
The E-DIO24 is assigned a link-local IP address by the Windows PC or other host that supports link-local
addressing to which it is connected. A link-local address is valid only for communications between the
E-DIO24 and the PC to which it is connected.
Static
The default IPv4 Address is manually configured on the E-DIO24.
IP address
The default IP address settings are assigned when automatic addressing is either disabled or not available
(DHCP or link-local, for example):
IPv4 address – The IP address stored on the device. The default IPv4 address is 192.168.0.101.
Subnet mask – The subnet mask stored on the device. The subnet mask determines the number of bits of
the IP address that is used for the host portion of the address vs. the number of bits used for the network
portion. The default subnet mask is 255.255.255.000.
Gateway – The gateway IP address stored on the device. The gateway address of the device bridges
subnets within a network. The default gateway is 192.168.0.1.
Connection code
The connection code is number between 0 (default) and 999999999. Change this number from its default to
prevent other users from connecting to and configuring the device. When the code is set to a value other than 0,
the device remains visible to other users on the network, but connection by another user is not allowed.

E-DIO24 User's Guide Installing the E-DIO24
9
Configuring the network router for communication across networks
To communicate with the E-DIO24 from a computer connected to a different network – such as over the
Internet – you must change the network configuration of the network router.
Caution! This procedure should only be performed by a network administrator or computer professional.
Incorrect settings can significantly disrupt a network.
Complete the following steps to configure the network router for communication across networks. In this
procedure, the E-DIO24 is installed on the host LAN, and the computer is installed on the client LAN.
1. Connect the E-DIO24 to a local network and determine its IP address.
If the address was assigned by DHCP, we recommend that you change it to a static address: set the default
address to the address assigned, and set the device network configuration to a static value.
2. Configure the firewall/router to forward incoming traffic to the following ports to the IP address assigned
to the device:
oUDP:54211 (discovery)
oTCP:54211 (commands)
3. On the computer connected to the client LAN, enter the WAN address of the host router, and specify the
ports that were forwarded to connect to the remote E-DIO24.
You can select a different port if the port above is not available on your router; however make sure that the
same port is configured for both UDP and TCP.
Network alarm
You can configure a digital output bit to change state when a host is connected to or disconnected from the
E-DIO24. All alarm settings are selectable with software.
Restoring factory default network settings
The reset button is used to restore the factory default network settings. This button is located next to the LEDs
on the top edge of the enclosure; see Figure 3 on page 11.
To reset network configuration settings to factory default values, press and hold the Factory reset button for at
least four seconds until both the Power and Activity LEDs blink. When you release the button, the device starts
up with network settings restored to the factory default values. If you release the button before the two LEDs
blink, the settings are not affected and the device starts up normally. If InstaCal is open when default settings
are restored, click the Refresh Boards toolbar button to reflect the changes.
Updating firmware
The E-DIO24 firmware can be updated in the field if required. Firmware available for download is posted at
www.mccdaq.com/firmware.aspx. MCC recommends that you check this page periodically to see if an update
to your device firmware is available.
Firmware update mode
If a firmware update fails, you can force the device into firmware update mode and use InstaCal to recover from
the failure.
To put the device into firmware update mode, press and hold the device reset button and apply power. The
device LEDs will continuously blink. InstaCal will detect a device in this mode as a bootloader device. Run
InstaCal and download the firmware. After downloading the firmware, refresh the device list and add the device
to InstaCal again.

10
Preliminar
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Chapter 3
Functional Details
External components
The E-DIO24 has the following external components:
Screw terminals
LED status indicators
Ethernet connector
External power connector
Factory reset button
Screw terminals
The E-DIO24 device screw terminals provide the following connections:
24 digital I/O connections (P0D0 to P2D7)
One counter input (access with P2D7)
One voltage output (+VO)
Ground (GND) connections
The location of each signal is shown in Figure 2.
Figure 2. E-DIO24 pinout

E-DIO24 User's Guide Functional Details
11
The remaining components are on the top edge of the enclosure; refer to Figure 3:
1
External power connector
4
Activity LED (bottom)
2
Ethernet connector with green Link/activity LED
(left) and yellow Speed LED (right)
5
Factory reset button
3 Power LED (top)
Figure 3. E-DIO24 connectors, reset button, and status LEDs
LED status indicators
The E-DIO24 has two LED indicators that indicate the status of power and host communications:
The Power LED is on when external power between 4.2 V to 5.6 V is supplied.
This LED is off when the external power supply is not connected, or the input power is outside of the 4.2 V
to 5.6 V voltage range of the external supply, causing a power fault.
The E-DIO24 has an onboard voltage supervisory circuit that monitors the 5 V external power supply.
The Activity LED is on when a valid host connection is detected.
This LED blinks when a command is received.
Both Power and Activity LEDs blink once when factory default settings are restored. Refer to Restoring factory
default network settings on page 9 for more information.
Ethernet connector
The E-DIO24 has one 10/100 BASE-T, auto-negotiation, high-speed communication port. The port connector is
an RJ-45, eight-position type that accepts CAT-5 shielded or unshielded twisted pair cable. The maximum
communication distance without using a repeater is 100 meters (328 feet). You can send your data 100 meters at
data speeds of up to 100 Mbps using only one Ethernet cable connected to the network.
Ethernet connector LEDS
The green Link/activity LED on the left of the connector is on when a valid Ethernet link is established,
and blinks when network activity is detected.
The yellow Speed LED on the right of the connector is on when the transmission speed is 100 Mbps, and
off when the transmission speed is 10 Mbps or no Ethernet link is established.
External power connector
Connect the supplied 5 volt, 1 amp power adapter (PS-5V1AEPS) to this connector. The E-DIO24 requires
external power to operate.
Factory reset button
Use the factory reset button to restore network configuration settings to the factory default values. Refer to
Restoring factory default network settings on page 9 for instructions.
The reset button can also used to put the device into firmware update mode to recover if a firmware update fails.
Refer to Firmware update mode section on page 9 for details.

E-DIO24 User's Guide Functional Details
12
Signal connections
Digital I/O
The E-DIO24 has 24 DIO lines configured as three 8-bit ports – port 0, port 1, and port 2. Each bit is
individually configurable for input or output. The digital I/O transfer rate is 5 kHz, maximum for software-
paced operation on a local network.
You can specify a digital bit configured for output as a network alarm and change state when an Ethernet
connection with a host is established or lost. All alarm settings are selectable with software.
The digital I/O terminals can detect the state of any TTL-level input signal with CMOS output. Refer to the
schematic shown in Figure 4.
Figure 4. Schematic showing switch detection by digital channel P0D0
If you set the switch to the +5 V input, the digital bit reads TRUE (1). If you move the switch to GND, the bit
reads FALSE (0).
Hardware compatibility
The E-DIO24 is functionally equivalent to USB-DIO24 Series and USB-1024 Series hardware. Software
programs written for those hardware devices can be run with the E-DIO24.
Pull-up/down configuration
All DIO lines are pulled high by default to 5 V through 47 kΩ resistors via jumpers W3, W4, and W5 on the
circuit board (see Figure 5). Each jumper configures a digital port for pull-up or pull-down.
Figure 5. Pull-up/down jumper locations
The pull-up/down voltage is common to all 47 kΩ resistors. Each jumper is configured by default for pull-up.
Figure 6 on page 13 shows the jumper configured for pull-up and pull-down.
Caution! The discharge of static electricity can damage some electronic components. Take care when
removing the enclosure. Before touching the board, ground yourself using a wrist strap or touch
the computer chassis or other grounded object to eliminate any stored static charge.

E-DIO24 User's Guide Functional Details
13
Figure 6. Pull-up/down jumper configurations, typical
For more information about digital signal connections
For general information about digital signal connections and digital I/O techniques, refer to the Guide to DAQ
Signal Connections (available on our web site at www.mccdaq.com/pdfs/DAQ-Signal-Connections.pdf).
Counter input
The 32-bit event counter is accessed with digital port 2 bit 7 (P2D7). This pin accepts a frequency input up to
10 MHz The internal counter increments when the TTL levels transition from low to high.
Voltage output
The +VO terminal can output up to 10 mA maximum. You can use this terminal to supply power to external
devices or circuitry.
Caution! The +VO terminal is an output. Do not connect to an external power supply or you may damage
the device and possibly the computer.
Ground
The ground (GND) terminals provide a common ground for the digital I/O, counter input, and power output
terminal.

E-DIO24 User's Guide Functional Details
14
Mechanical drawings
Figure 7. E-DIO24 device circuit board dimensions

E-DIO24 User's Guide Functional Details
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Figure 8. E-DIO24 bottom enclosure dimensions

E-DIO24 User's Guide Functional Details
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Figure 9. E-DIO24 top enclosure dimensions
DIN-rail compatible
The E-DIO24can be mounted on a DIN rail using the ACC-205 DIN-rail accessory kit. Refer to our website for
more information.

17
Chapter 4
Specifications
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Digital input/output
Table 1. Digital input/output specifications
Parameter Specification
Digital type 5 V TTL input / CMOS output
Number of I/O
24, configured as 3 ports of 8 bits each (Port 0, Port 1, Port 2)
Configuration
Each bit can be independently configured for input or output
Pull-up configuration
Each port has 47 kΩ resistors configurable as pull-up (default) or pull-down via
internal jumpers W3 (port 1), W4 (port 2), and W5 (port 0).
Digital I/O transfer rate
(system-paced) 100 to 5000 reads/writes per second, typical, on a local network (Note 1)
Alarm functionality
Any combination of DIO bits may be configured to become outputs and go to defined
values when an Ethernet connection with a host is established or lost.
Power on and reset state
All bits are input unless the alarm functionality is enabled for them.
Input high voltage threshold
2.0 V min (Note 2)
Input high voltage limit
5.5 V absolute max
Input low voltage threshold
0.8 V max (Note 2)
Input low voltage limit
–0.5 V absolute min
0 V recommended min
Output high voltage
4.4 V min (IOH = –50 µA)
3.76 V min (IOH = –24 mA)
Output low voltage
0.1 V max (IOL = 50 µA)
0.44 V max (IOL = 24 mA)
Note 1: This is the typical throughput when the device and host are both connected by Ethernet to the same local
network. Throughput can vary significantly, and typical throughput is not guaranteed, if a wireless connection is
involved or data is sent over the internet.
Note 2: The digital input thresholds (P2D7 only) and counter input thresholds are different due to different buffer types.

E-DIO24 User's Guide Specifications
18
Counter
Table 2. Counter specifications
Parameter Specification
Pin name
P2D7 (shared with digital I/O)
Counter type
Event counter
Number of channels
1
Input type
Schmitt trigger; uses port 2 digital I/O pull-up/down selection.
Resolution
32 bits
Schmitt trigger hysteresis 1.01 V typ
0.6 V min
1.5 V max
Input high voltage threshold
2.43 V typ (Note 3)
1.9 V min
3.1 V max
Input high voltage limit
5.5 V absolute max
Input low voltage threshold
1.42 V typ (Note 3)
1.0 V min
2.0 V max
Input low voltage limit
–0.5 V absolute min
0 V recommended min
Input frequency
10 MHz max
High pulse width
50 ns min
Low pulse width
50 ns min
Note 3: The digital input thresholds (P2D7 only) and counter thresholds are different due to different buffer types.
Memory
Table 3. Memory specifications
Parameter Specification
Non-volatile memory
4,096 bytes (272 bytes for settings, 3,824 bytes for user)
Power
Table 4. Power specifications
Parameter Condition Specification
External power supply
5 V ±5% required
5 V, 1 A supply provided (PS-5V1AEPS)
Supply current
Quiescent current
160 mA typical (Note 4)
840 mA max, including all external loading
User output voltage range
Available at +VO terminal
4.40 V min to 5.25 V max; assumes supplied
AC adapter is used
User output current
Available at +VO terminal
10 mA max
Note 4: This is the total quiescent current requirement for the device that includes the LEDs. This value does not
include any potential loading of the digital I/O bits or +VO terminal.

E-DIO24 User's Guide Specifications
19
Network
Ethernet connection
Table 5. Ethernet connection specifications
Parameter Specification
Ethernet type
100 Base-TX
10 Base-T
Communication rates
10/100 Mbps, auto-negotiated
Connector
RJ-45, 8 position
Cable length
100 meters (328 feet) max
Additional parameters
HP Auto-MDIX support
Network interface
Table 6. Factory default specifications
Parameter Specification
Protocols used
TCP (IPv4 only) and UDP
Network ports used
UDP: 54211 (discovery)
UDP: 6234 (bootloader only)
TCP: 54211 (commands)
Network IP configuration
DHCP + link-local, DHCP, static, link-local
Network name E-DIO24-xxxxxx, where xxxxxx are the lower 6 digits of the device MAC
address
Network name publication
By NBNS; responds to b-node broadcasts, therefore only available on the local subnet
Network factory default settings
Table 7. Factory default specifications
Parameter Specification
Factory default IP address
192.168.0.101
Factory default subnet mask
255.255.255.0
Factory default Gateway
192.168.0.1
Factory default DHCP setting
DHCP + link-local enabled
Network security
Table 8. Factory default specifications
Parameter Specification
Security implementation
TCP sockets are not opened unless application sends the correct PIN connection
code; stored in non-volatile memory; may be changed by user; default value is 0000
Number of concurrent sessions
1
Vulnerabilities
TCP Sequence Number Approximation Vulnerability

E-DIO24 User's Guide Specifications
20
LED displays and the factory reset button
Table 9. LED and button configurations
Parameter Specification
Power LED (top)
4.2 V < V
ext
< 5.6 V: On
Vext < 4.2 V, Vext > 5.6 V: Off (power fault)
Both LEDs blinking continuously: In firmware update mode
Activity LED (bottom)
On when there is a valid host connection.
Blinks when a command is received.
Both LEDs blinking continuously: In firmware update mode.
Ethernet connector LEDS

Left (green) – Link/activity indicator: on when there is a valid Ethernet link, and
blinks when network activity is detected.

Right (yellow) – Speed indicator: on for 100 Mbps, off for 10 Mbps or no link.
Factory reset button
Resets network and alarm configuration settings to factory default values.
Press and hold for 4 seconds. The Power and Activity LEDs will both blink twice
and turn off to indicate that network settings have been restored to default values.
Release the button to allow the device to reset and use the default settings.
If the reset button is released before the two LEDs blink, settings are not affected.
Holding the reset button at power on forces the device into firmware update mode
in case of a failed firmware update. In this mode, both LEDs blink together
constantly. The device may be returned to normal operation by cycling the power.
Environmental
Table 10. Environmental specifications
Parameter Specification
Operating temperature range 0 °C to 55 °C max
Storage temperature range
–40 °C to 85 °C max
Humidity
0% to 90% non-condensing max
Mechanical
Table 11. Mechanical specifications
Parameter Specification
Dimensions (L × W × H)
117.9 × 82.8 × 29.0 mm (4.64 × 3.26 × 1.14 in.)