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Modbus TCP Based Ethernet I/O Module with 2 Ethernet ports for daisy-chain networking, with 16 Digital Outputs and can be configured as Sink type. Communicable over Modbus TCP and Modbus UDP protocol, Supports operating temperatures of -25°C ~ +75°C (-13°F ~ 167°F) and has a din rail mount.

ET-7242

Modbus TCP Based Ethernet I/O Module with 2 Ethernet ports for daisy-chain networking, with 16 Digital Outputs and can be configured as Sink type. Communicable over Modbus TCP and Modbus UDP protocol, Supports operating temperatures of -25°C ~ +75°C (-13°F ~ 167°F) and has a din rail mount.

  Price:  $369.00  

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Features

The ET-7242 provides 16 sink-type digital output channels. It features optical isolation for 3750 VDC of transient overvoltage protection and doesn’t have channel-to-channel isolation. The power-on value and safe value of digital output channel are programmable. In some industrial applications, the user can connect the output channel of ET-7242 to the RM series relay module to switch inductive loads.

  • Built-in Web Server
  • Web HMI
  • Support for both Modbus TCP and Modbus UDP Protocols
  • Communication Security
  • 2-port Ethernet Switch for Daisy-Chain Topology
  • Dual Watchdog
  • Wide Operating Temperature Range: -25 ~ +75°C
  • I/O Pair Connection
  • Built-in I/O
    • DO: 16 Channels

Applications

Building Automation, Factory Automation, Machine Automation, Remote Maintenance, Remote Diagnosis, Testing Equipment.

Daisy-Chain Ethernet Cabling

The ET-7200/PET-7200 Series has a built-in two-port Ethernet switch to implement daisy-chain topology. The cabling is much easier and total costs of cable and switch are significantly reduced.

application2

LAN Bypass

LAN Bypass feature guarantees the Ethernet communication. It will automatically active to continue the network traffic when the ET-7200/PET-7200 looses its power.

application3

Communication Security

Account and password are needed when logging into the web server. An IP address filter is also included, which can be used to allow or deny connections with specific IP addresses.

Support for both Modbus TCP and Modbus UDP Protocols

The Modbus TCP, Modbus UDP slave function on the Ethernet port can be used to provide data to remote SCADA software.

Built-in I/O

Various I/O components are mixed with multiple channels in a single I/O module, which provides the most cost effective I/O usage and enhances performance of the I/O operations.

Dual Watchdog

The Dual Watchdog is consists of a Module Watchdog and a Communication Watchdog. The action of AO,DO are also associated to the Dual Watchdog.
Module Watchdog is a built-in hardware circuit to monitor the operation of the module and will reset the CPU if a failure occurs in the hardware or the software. Then the Power-on Value of AO,DO will be loaded.
Communication Watchdog is a software function to monitor the communication between the host and the I/O module. The timeout of the communication Watchdog is proprgrammable, when the I/O doesn't receive commands from the host for a while, the watchdog forces the AO,DO to pre-programmed Safe Value to prevent unpredicatable damage of the connected devices.

Highly Reliable Under Harsh Environment

  • Wide Operating Temperature Range: -25 ~ +75°C
  • torage Temperature: -30 ~ +80°C
  • Humidity 10 ~ 90% RH (Non-condensing)

I/O Pair Connection

This function is used to create a AI/DI to AO/DO pair through the Ethernet. Once the configuration is completed, the I/O module can poll the status of remote AI/DI devices and then use the Modbus TCP protocol to continuously write to a local AO/DO channels in the background.

application4 application5

Power-on Value and Safe Value

Besides setting by the set AO,DO commands, the AO,DO can be set under two other conditions.
Power-on Value: The Power-on Value is loaded into the AO,DO under 3 conditions: Power-on, reset by Module Watchdog, reset by reset command.
Safe Value: When the Communication Watchdog is enabled and a Communication Watchdog timeout occurs, the “safe value” is loaded into the AO,DO.

application6

Specifications

Software
Built-In Web Server Yes
Web HMI Yes
I/O Pair Connection Yes
Communication
Ethernet Port 2 x RJ-45, 10/100 Base-TX, Swtich Ports
PoE -
Protocol Modbus/TCP, Modbus/UDP
Security ID, Password and IP Filter
Dual Watchdog Yes, Module (0.8 second), Communication (Programmable)
LED Indicators
for System Running Yes
for Ethernet Link/Act Yes
for DI/DO status Yes
for PoE Power -
2-Way Isolation
Ethernet 1500 VDC
I/O 3750 VDC
EMS Protection
ESD (IEC 61000-4-2) ±4 kV Contact for Each Terminal and ±8 kV Air for Random Point
EFT (IEC 61000-4-4) ±4 kV for Power Line
SURGE ±2 kV for Power Line
Power Requirements
Reverse Polarity Protection Yes
Powered from Terminal Block 12 ~ 48 VDC
Powered from PoE -
Consumption 3.2 W
Mechanical
Dimensions (W x L x H) 76 mm x 120 mm x 38 mm
Installation DIN-Rail or Wall mounting
Environmental
Operating Temperature -25 ~ +75°C
Storage Temperature -30 ~ +80°C
Humidity 10 ~ 90% RH, Non-condensing

I/O Specifications

Digital Output
Channels 16
Type Isolated Open Collector
Sink/Source (NPN/PNP) Sink
Max. Load Current 650 mA/channel at 25°C
Direct Drive Power Relay Module
Load Voltage + 3.5 VDC ~ + 50 VDC
Overvoltage Protection 60 VDC
Overload Protection 1.3 A
Short-circuit Protection Yes
Power-on Value Yes, Programmable
Safe Value Yes, Programmable

References and Support

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