ET-2224CI is a 4-channel analog output module with channel-to-channel isolation. All analog output channels can be individually configured with output ranges, including 0 ~ 5 V, 0 ~ 10 V, 4 ~ 20 mA, and 0 ~ 20 mA. The module can be set as voltage or current outputs via the software. It offers configurable AO power-on value and safe value settings, as well as open wire detection for each 4 ~ 20 mA output channel. The module complies with the RF (Radiated, radio-frequency) immunity of IEC 61000-4-3 standard and provides EMS (EFT/ESD/Surge) protection, 3000 VDC I/O isolation, and channel-to-channel isolation to enhance noise protection capabilities in industrial environments.
Moreover, the module supports I/O Pair-Connection functionality, allowing the establishment of AI-to-AO pairing connections with the remote module via Ethernet. Once configured, remote AI data can be written to local AO channels in Pull mode via Modbus TCP.
ET-2224CI 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.
Factory Automation, Machine Automation, Building Automation, Remote Diagnosis & Maintenance, Testing Equipment
| 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, AO, O/C (Note) |
| Analog Output |
| Channels |
4 Differential |
| Type |
Voltage, Current |
| Range |
Voltage: 0 ~ +5 VDC, 0 ~ +10 VDC
Current: 0 ~ 20 mA, 4 ~ 20 mA |
| Resolution |
12-bit |
| Accuracy |
±0.1% of FSR |
| Short Circuit Protection |
Yes |
| DA Output Response Time |
10 ms per channel |
| Programmable Output Slope |
Voltage: 0.0625 ~ 512 V/Second
Current: 0.125 ~ 1024 mA/Second |
| Open Wire Detection |
For 4 ~ 20 mA only |
| Voltage Output Capability |
10 V @ 10 mA |
| Current Load Resistance |
500 Ω |
| Individual Channel Configuration |
Yes |
| Channel-to-Channel Isolation |
3000 VDC |
| 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 |
5.4 W (max.) |
| Powered from Terminal Block |
+10 ~ +48 VDC |
| Mechanical |
| Casing |
Metal |
| Dimensions (mm) |
33 x 184 x 129 (W x L x H) |
| Installation |
DIN-Rail mounting / Wall mounting (Optional ASO-0015) |
| Environment |
| Operating Temperature |
-25 ~ +75 °C |
| Storage Temperature |
-40 ~ +80 °C |
| Humidity |
10 ~ 90% RH, Non-condensing |
Note: 8 “O/C” LEDs on the front panel serve as Open Wire Detection indicators for current outputs.
