Modbus TCP Based Ethernet I/O Module with 2 Ethernet ports for daisy-chain networking, with 8-channel Analog Input and 4-channel Digital Output. Analog Input Types are +/-150 mV, +/-500 mV, +/-1V, +/-5V, +/-10V +/-20 mA, 0 ~ 20 mA, 4 ~ 20 mA (Jumper Selectable) current input voltage input. Communicable over Modbus TCP and Modbus UDP. Supports operating temperatures of -25°C ~ +75°C (-13°F ~ 167°F) and has a din rail mount.
The ET-7217 is a module with 8-channel differential analog inputs and 4-channel digital ouputs. It provides programmable input range on all analog channels (+/-150 mV, +/-500 mV, +/-1 V, +/-5 V, +/-10 V, +/-20 mA, 0 ~ 20 mA and 4 ~ 20 mA) and digital output can be set alarm output with Short-circuit protection and overload protection. Each analog channel is allowed to configure an individual range and has 240 Vrms high overvoltage protection. Each analog input can be programmed to accept voltage or current as input depending upon the position of corresponding jumper. The sampling rate of ET-7217 is changeable; there are fast mode and normal mode for your consideration. ET-7217 also has qualification for 4 kV ESD protection as well as 2500 VDC intra-module isolation.
- 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
- AI: 8 Channels with 240 Vrms Overvoltage Protection
- DO: 4 Channels
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.
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.
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.
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.
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
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.
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.
Reference & Support
|Built-In Web Server||Yes|
|I/O Pair Connection||Yes|
|Ethernet Port||2 x RJ-45, 10/100 Base-TX, Swtich Ports|
|Protocol||Modbus TCP, Modbus UDP|
|Security||ID, Password and IP Filter|
|Dual Watchdog||Yes, Module (0.8 seconds), Communication (Programmable)|
|for System Running||Yes|
|for Ethernet Link/Act||Yes|
|for DI/DO status||Yes|
|for PoE Power||-|
|2 Way Isolation|
|ESD (IEC 61000-4-2)||±4 kV Contact for Each Terminal and ±8 kV Air for Random Point|
|EFT (IEC 61000-4-4)||±2 kV for Power Line|
|Surge (IEC 61000-4-5)||±2 kV for Power Line|
|Reverse Polarity Protection||Yes|
|Powered from Terminal Block||12 ~ 48 VDC|
|Powered from PoE||-|
|Dimensions (W x L x H)||76 mm x 120 mm x 38 mm|
|Installation||DIN-Rail or Wall mounting|
|Operating Temperature||-25 ~ +75 °C|
|Storage Temperature||-30~ +80 °C|
|Humidity||10 ~ 90% RH, non-condensing|
|Type||+/-150 mV, +/-500 mV, +/-1V, +/-5V, +/-10V
+/-20 mA, 0 ~ 20 mA, 4 ~ 20 mA
|Individual Channel Configuration||Yes|
|Sampling Rate||Normal Mode||10 Samples/Second (Total)|
|Fast Mode||50 Samples/Second (Total)|
|Fast Mode||+/-0.5% or better|
|Zero Drift||+/-20 μV/°C|
|Span Drift||+/-25 ppm/°C|
|Overvoltage Protection||240 Vrms|
|Common Voltage Protection||±200 VDC|
|Overcurrent Protection||Yes, 50 mA at 110 VDC|
|Virtual Channel to Channel Isolation||Yes, 400 VDC|
|Open Wire Detection for 4 ~ 20 mA||Yes|
|Input Impedance||Voltage||2 MΩ|
|Common Mode Rejection||86 dB Min.|
|Normal Mode Rejection||100 dB|
|Open Wire Detection||Yes, for 4 ~ 20 mA only|
|Virtual Channel to Channel Isolation||+/-400 VDC|
|Type||Isolated Open Collector|
|Max. Load Current||700 mA/Channel|
|Load Voltage||5 VDC ~ 50 VDC|
|Overvoltage Protection||60 VDC|
|Overload Protection||1.4 A|
|Power-on Value||Yes, Programmable|
|Safe Value||Yes, Programmable|