8-Channel Digital Input & Output Module
This is an industrial-grade input & output module with an RS485 control interface. It has 8 Digital Input (DI) and 8 Digital Output (DO) isolated channels. It supports passive/active inputs, Modbus RTU protocol with built-in protection circuits such as power isolation, magnetical isolation, resettable fuse, and TVS.
- Configurable device address (1 - 255)
- Daisy-chained connection with multiple RS485 devices
- On-board voltage regulator (supports 7 - 36 V input voltage)
- On-board power supply isolation.
- On-board magnetical isolation.
- On-board resettable fuse and TVS )Transient Voltage Suppressor).
- Over-current / overvoltage proof, lightingproof & anti-elctrostatic.
- Supports passive and active digital input, with bi-directional optocoupler isolation and built-in debouncing algorithm.
- Supports DI/DO linkage control or DO toggle control.
- The output utilizes Darlington transistors with optocoupler isolation, provides stronger driving capability with up to 500mA sinking current, and built-in flyback diode protection.
- Features flash-on and flash-off functions by passing arguments to the command.
- DIN Rail Compatible.
- Multiple LED indicators, input and output status, signal status, and transceiving status.
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-1.jpg )
Primary Function
Supports reading digital input by sending Modbus RTU Protocol commands via RS485 for digital output control.
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-2.jpg )
Industrial Grade Isolated Protection
Onboard power and signal dual isolation for RS485 communication with stable isolation voltage, features high reliability and strong anti-interference performance. Built-in TVS (transient voltage suppression tube) that can effectively suppress the surge voltage and transient peak voltage in the circuit, lightning proof & ESD protection. Built-in resettable fuse and protection diode to ensure stable current and voltage output, provides over-current and over-voltage proof, improves shock-proof performance, suitable for industrial applications with high power environment.
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-3.jpg )
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-4.jpg )
Full Isolation For Digital Input & Output
Supports passive and active digital input (PNP Type or NPN type), with bi-directional Optocoupler isolation. Adopts Darlington transistor open-drain output, up to 500mA sinking current per channel for Directly Driving Relays.
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-11.jpg )
Multiple Modes for Various Automation Scenarios
Supports multiple output control modes, and each channel supports an independent control mode setting.
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-5.jpg )
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-6.jpg )
Wide Voltage Power Supply, Isolated RS485 Interface
Built-in fuse and anti-reverse protection, with power and signal dual isolation.
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-7.jpg )
DIN Rail Compatible
Supports 35mm standard guide rail, with rail-mount buckle, and supports stacking installation. Easy to install!
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-8.jpg )
![](https://static.cytron.io/image/catalog/products/CA-8CH-EXT-IDS/ca-8ch-ext-ids-9.jpg )
Warranty Period: 12 months