MEASUREMENT COMPUTING E-DIO24-OEM Ethernet-based Digital I-O User Guide

MEASUREMENT COMPUTING E-DIO24-OEM Ethernet-based Digital I-O

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Notice
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About this User’s Guide

What you will learn from this user’s guide

This user’s guide describes the Measurement Computing E-DIO24-OEM data acquisition device and lists device specifications.

Conventions in this user’s guide

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Where to find more information

Additional information about E-DIO24-OEM hardware is available on our website at www.mccdaq.com. You can also contact Measurement Computing Corporation with specific questions.

• Knowledgebase: kb.mccdaq.com
• Tech support form: www.mccdaq.com/support/support_form.aspx
• Email: techsupport@mccdaq.com
• Phone: 508-946-5100 and follow the instructions for reaching Tech Support

For international customers, contact your local distributor. Refer to the International Distributors section on our website at www.mccdaq.com/International.

Introducing the E-DIO24-OEM

The E-DIO24-OEM is an Ethernet based digital I/O data acquisition device that is compatible with TCP (IPv4 only) and UDP network protocols. The E-DIO24-OEM 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
• Header connectors for field wiring connections
• Functionally equivalent to USB-DIO24 Series and USB-1024 Series hardware.

The E-DIO24-OEM requires a 5 VDC external power supply (available separately).

Ethernet interface

The E-DIO24-OEM has one built-in 10/100 BASE-T auto-negotiation, high-speed communication port. You can remotely access and configure your E-DIO24-OEM from anywhere on the network. Only one computer can control the E-DIO24-OEM 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-OEM functions are illustrated in the block diagram shown here.

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.

Downloading the software

Refer to the E-DIO24-OEM product page on the on the Measurement Computing website for information about the supported software you can download.

Install the software before you install the hardware
The driver needed to run the device is installed when you install the software. Therefore, you need to install the software package you plan to use before you install the hardware.

Connecting external power

E-DIO24-OEM operation requires a 5 volt power supply. External power can be connected to either the barrel connector ( J4 ) or 2-pin terminal block ( W1 ).

Connect a 5 VDC supply to either connector J4 or W1
Do not attempt to apply power to both external power connectors simultaneously.

A 5 volt, 1 amp external power adapter (PS-5V1AEPS) is available as a separate purchase for connection to J4.

The Power LED turns on when 5 V power is supplied. 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 2 on page 10 for the location of the Power LED.

Connecting the E-DIO24-OEM

The E-DIO24-OEM requires a TCP and UDP connection to a network or computer.

Using the Ethernet cable provided, connect the E-DIO24-OEM to a 10Base-T- or 100Base-TX compatible Ethernet port, hub, or switch. When connecting the E-DIO24-OEM 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-OEM 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.

Configuring network settings

The following E-DIO24-OEM 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-OEM, 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-DIO24OEM. If the connected network does not have a DHCP server, the address stored in the default IP address is assigned.

If the E-DIO24-OEM 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-DIO24OEM 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-OEM is assigned an IP address shortly after it is powered up and attached to the network.

Link-local Only
The E-DIO24-OEM 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-OEM and the PC to which it is connected.

Static
The default IPv4 Address is manually configured on the E-DIO24-OEM.

IP address settings

The default settings of the following IP address are assigned to the E-DIO24-OEM 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.

Configuring the network router for communication across networks

To communicate with the E-DIO24-OEM 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-OEM is installed on the host LAN, and the computer is installed on the client LAN.

1. Connect the E-DIO24-OEM 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:
   o UDP:54211 (discovery)
   o TCP: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-OEM.

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-OEM. All alarm settings are selectable with software.

Restoring factory default network settings

The reset button is used to restore the factory default network settings. The location of this button is shown in Figure 2 on page 10.

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 the network settings restored to 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-OEM 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.

Functional Details

Components

The E-DIO24-OEM has the following components, as shown in Figure 2:

• Header connectors
• LED status indicators
• Ethernet connector
• External power connectors
• Factory reset button

Figure 2. E-DIO24-OEM components

1. Header connector W2
2. Pull-up/down jumper W3 (port 1)
3. Pull-up/down jumper W4 (port 2)
4. Pull-up/down jumper W5 (port 0)
5. Header connector W6
6. Factory reset button
7. Power (top) and Activity (bottom) LEDs
8. Ethernet connector
9. External power barrel connector J4
10. External power header connector W1

Header connectors

The E-DIO24-OEM header connectors are labeled W2 and W6 and provide the following connections:

• 24 digital I/O connections ( P0D0 to P2D7 )
• One counter input (access with P2D7 )
• One voltage power output ( +VO )
• Ground ( GND ) connections

W6 pinout

W2 pinout

The signal location of each pinout is shown in Figure 3.

LED status indicators

The E-DIO24-OEM has two LED indicators that indicate the status of power and host communications. The LEDs are stacked one above the other:

• The Power LED (top) 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-OEM has an onboard voltage supervisory circuit that monitors the 5 V external power supply.
• The Activity LED (bottom) 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-OEM 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 connectors

The E-DIO24-OEM requires 5 VDC external power. The board provides two options to connect external power:

• 2-pin terminal block header connector W1 ; pin 1 is the positive input.
• Barrel connector J4
  Measurement Computing offers an optional 5 volt AC adapter (PS-5V1AEPS) for connection to J4.

Connect a 5 VDC supply to either connector W1 or J4
Do not attempt to apply power to both external power connectors simultaneously.

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 the Universal Library software help topic for details.

Signal connections

Digital I/O

The E-DIO24-OEM 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 softwarepaced 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-OEM 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-OEM.

Pull-up/down configuration

All DIO lines are pulled high by default to 5 V through 47 k resistors via jumpers W3, W4, and W5 (see Figure 5 below). Each jumper configures a digital port for pull-up or pull-down.

The pull-up/down voltage is common to all 47 k resistors. Each jumper is configured by default for pull-up. Figure 6 below shows the jumper configured for pull-up and pull-down.

Caution! The discharge of static electricity can damage some electronic components. 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.

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.

Mechanical drawings

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

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.

Counter

Table 2. Counter specifications

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

user)

Power

Table 4. Power specifications

5 V, 1 A supply recommended (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 pin| 4.40 V min to 5.25 V max; assumes recommended AC adapter is used
User output current| Available at +VO pin| 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 pin.

Network

Ethernet connection

Table 5. Ethernet connection specifications

_ 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

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

Network security

Table 8. Factory default specifications

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

LED displays and the factory reset button

Table 9. LED and button configurations

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

Mechanical

Table 11. Mechanical specifications

max

Header connector

Table 12. Header connector specifications

• DC barrel input jack labeled J4 (mates with 5.5 mm OD / 2.1 mm ID plug, center positive)
• 1×2 pin 0.1 in. pitch header labeled W1 (pin 1: positive input)

Table 13. W6 pinout

Table 14. W2 pinout

Pin| Signal name| Pin description| Pin| Signal name| Pin description
---|---|---|---|---|---
1| P1D0| Port 1 bit 0| 2| P1D1| Port 1 bit 1
3| P1D2| Port 1 bit 2| 4| P1D3| Port 1 bit 3
5| GND| Ground| 6| P1D4| Port 1 bit 4
7| P1D5| Port 1 bit 5| 8| P1D6| Port 1 bit 6
9| P1D7| Port 1 bit 7| 10| +VO| User voltage output
11| GND| Ground| 12| P2D4| Port 2 bit 4
13| P2D5| Port 2 bit 5| 14| P2D6| Port 2 bit 6
15| P2D7| Port 2 bit 7 / Counter| 16| GND| Ground

Screw terminal connector (not populated)

Table 15. Screw terminal connector specifications

J2, J3, J7, J8, J9

Table 16. Screw terminal pinout

Pin description
5| P1D0| Port 1 bit 0| 1| P0D0| Port 0 bit 0
4| P1D1| Port 1 bit 1| 2| P0D1| Port 0 bit 1
3| P1D2| Port 1 bit 2| 3| P0D2| Port 0 bit 2
2| P1D3| Port 1 bit 3| 4| P0D3| Port 0 bit 3
1| GND| Ground| 5| GND| Ground
| 6| P0D4| Port 0 bit 4
J2| J8
Pin| Signal name| Pin description| Pin| Signal name| Pin description
5| P1D4| Port 1 bit 4| 1| P0D5| Port 0 bit 5
4| P1D5| Port 1 bit 5| 2| P0D6| Port 0 bit 6
3| P1D6| Port 1 bit 6| 3| P0D7| Port 0 bit 7
2| P1D7| Port 1 bit 7| 4| GND| Ground
1| +VO| User voltage output| 5| GND| Ground
J3| J9
Pin| Signal name| Pin description| Pin| Signal name| Pin description
6| GND| Digital ground| 1| P2D0| Port 2 bit 0
5| P2D4| Port 2 bit 4| 2| P2D1| Port 2 bit 1
4| P2D5| Port 2 bit 5| 3| P2D2| Port 2 bit 2
3| P2D6| Port 2 bit 6| 4| P2D3| Port 2 bit 3
2| P2D7| Port 2 bit 7 / Counter| 5| GND| Ground
1| GND| Ground|

Measurement Computing Corporation 10 Commerce Way Norton, Massachusetts 02766
508-946-5100
Fax: 508-946-9500
E-mail: info@mccdaq.com
www.mccdaq.com

NI Hungary Kft H-4031 Debrecen, Hátar út 1/A, Hungary
Phone: +36 (52) 515400 Fax: +36 (52) 515414
http://hungary.ni.com/debrecen

References

• Test and Measurement Systems, a part of Emerson - NI
• MCC DAQ - About
• MCC DAQ - About
• Firmware Updates
• MCC DAQ - About
• Support - Digilent

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