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ICP DAS ET-2255-32 - Ethernet I/O Module with 16-ch DI, 16-ch DO (Sink)
by ICP DAS
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ET-2255-32_SUMMARY.html
- Web Server for Configuration
- Support Modbus TCP/UDP, MQTT, and SNMP V2c Protocols
- 2-port Ethernet Switch (LAN Bypass) for Daisy-Chain Wiring
- Supports Dual-watchdog
- I/O Pair Connection (Push and Pull)
- Built-in I/O
- 16-ch DI (Wet/Dry), 16-ch DO (Sink)
- LED Display to Indicate the I/O Status
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ET-2255-32_DESCRIPTION.html
ET-2255-32 is a 16-channel DI (Wet/Dry Contact) and 16-channel DO
(Sink-type) module. Each input channel can function as a 32-bit counter, while each output channel can be
configured with a power-on value and safe value, ensuring the module's safe operation in applications with
hazardous voltages. The module includes a built-in 2-port Ethernet switch, facilitating a daisy-chain topology.
This feature offers flexibility in device configuration, simplifies installation, and reduces infrastructure
costs. The module features optical-isolated 3000 Vrms transient overvoltage protection and does not support
channel-to-channel isolation. Additionally, it provides EMS (EFT/ESD/Surge) protection and 3000 VDC I/O
isolation to enhance noise protection capabilities in industrial environments.
Moreover, the module supports I/O Pair-Connection functionality, allowing the establishment of DI-to-DO pairing
connections with the remote module via Ethernet. Once configured, local DI data can be written to remote DO
channels in Push mode via Modbus TCP. Alternatively, pull remote DI to local DO.
ET-2255-32 supports the MQTT protocol, serving as a publisher and subscriber of messages. When connected to an
MQTT Broker Server, it can publish real-time statuses of I/O in the form of topics and receive messages from
subscribed topics. If a disconnection occurs between the module and the broker during communication, its
mechanism for reconnecting can automatically restore the connection. Additionally, its Keep-Alive Interval
mechanism ensures a continuous connection with the broker.
ET-2255-32 supports the SNMP V2c specification, enabling it to transmit both module and I/O information to SNMP
network management devices or software (SNMP Network Management Software). This allows administrators to monitor
module status in real-time. Additionally, if the Trap function is enabled, the module can proactively send
messages to administrators when there are changes in I/O statuses or during restarts, keeping them informed of
channel statuses at all times.
ET-2255-32.html
| Software |
| Built-in Web Server |
Yes |
| CPU Module |
| CPU |
32-bit ARM |
| Watchdog Timer |
Module, Communication (Programmable) |
| Isolation |
| 2-way Isolation |
Ethernet: 1500 VDC
I/O: 3000 VDC |
| EMS Protection |
| EFT (IEC 61000-4-4) |
±4 kV for Power Line |
| ESD (IEC 61000-4-2) |
±4 kV Contact for Each Terminal
±8 kV Air for Random Point |
| Surge (IEC 61000-4-5) |
±2 kV for Power Line |
| LED Indicators |
| Status |
Run, Ethernet, I/O |
| Digital Input/Counter |
| Channels |
16 |
| Type |
Dry Contact
Wet Contact |
| Sink/Source (NPN/PNP) |
Dry: Source
Wet: Sink/Source |
| ON Voltage Level |
Dry: Close to GND
Wet: +5 ~ +50 VDC |
| OFF Voltage Level |
Dry: Open
Wet: +1 VDC (max.) |
| Max. Counts |
4,294,967,295 (32-bit) |
| Frequency |
2.5 kHz |
| Input Impedance |
7.5 kO |
| Overvoltage Protection |
+70 VDC |
| Low Pass Filter |
1 ~ 6500 ms (0.08 Hz ~ 500 Hz) |
| Digital Output |
| Channels |
16 |
| Type |
Open Collector |
| Sink/Source (NPN/PNP) |
Sink |
| Load Voltage |
+3.5 ~ +50 VDC |
| Load Current |
500 mA/channel |
| Overvoltage Protection |
+60 VDC |
| Overload Protection |
1.4 A (with short-circuit protection) |
| Short-circuit Protection |
Yes |
| Power on Value |
Programmable |
| Safe Value |
Programmable |
| Ethernet |
| Ports |
2 x RJ-45, 10/100 Base-TX, Switch Ports |
| LAN bypass |
Yes |
| Access Control |
Password and IP Filter |
| Protocol |
Modbus TCP, Modbus UDP, MQTT, SNMP V2c |
| Power |
| Reverse Polarity Protection |
Yes |
| Consumption |
4.7 W (max.) |
| Powered from Terminal Block |
+10 ~ +48 VDC |
| Mechanical |
| Casing |
Plastic |
| Dimensions (mm) |
31 x 157 x 129 (W x L x H) |
| Installation |
DIN-Rail mounting |
| Environment |
| Operating Temperature |
-25 ~ +75 C |
| Storage Temperature |
-40 ~ +80 C |
| Humidity |
10 ~ 90% RH, Non-condensing |
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