Delta RTU-485 PLC Remote I/O Communication Module
The Delta RTU-485 Programmable Logic Controller (PLC) is a remote I/O communication module designed for RS-485 based expansion in PLC systems. It supports Delta PLC 485 Communication using Modbus ASCII/RTU, operates on a 24 VDC power supply, and provides 500 VDC electrical isolation for stable field connectivity. Manufactured by Delta, this unit is part of the Delta Programmable Logic Controller portfolio within the Delta DVP-S Series.
| Brand | Delta |
| Product Type | Programmable Logic Controller |
| Model Number | RTU-485 |
Delta RTU-485 Programmable Logic Controller - Technical Specifications
| Specification | Value |
|---|---|
| Power Supply Voltage | 24 VDC (-15 to 20%) |
| Storage /Operation Temperature | Storage: -25ºC ~70ºC (temperature)Operation: 0ºC ~55ºC (temperature) |
| Storage /Operation humidity | 5%~95% (humidity)5%~95% (humidity); pollution degree 2 |
| Vibration/shock immunity | Standard: IEC 61131-2、IEC 68-2-6 (TEST Fc)/IEC 61131-2 & IEC 68-2-27(TEST Ea) |
| Transmission method | RS-485 |
| Connector | 3-pin, removable |
| Serial baudrate | 1,200, 2,400, 4,800, 9,600, 19,200, 38,400, 57,600, 115,200 bps |
| Data type | Modbus ASCII/RTU |
| Electrical isolation | 500 VDC |
| Transmission cable | 2-wire twister shielded cablew8 |
| Noise immunity | ESD (IEC 61131-2, IEC 61000-4-2): 8KV Air Discharge，4KV ContactDischargeEFT (IEC 61131-2, IEC 61000-4-4): Power Line: 2KV, Digital I/O: 1KVAnalog & Communication I/O: 1KVDamped-Oscillatory Wave: Power Line: 1KV, Digital I/O: 1KVRS (IEC 61131-2, IEC 61000-4-3): 80MHz~1000MHz , 1.4GHz~2.0GHz ,10V/m |
The Delta RTU-485 PLC is a dedicated communication and expansion unit used in Delta PLC Remote I/O Modules for distributed automation systems. It enables RS-485 serial communication with Modbus ASCII and RTU protocols, supporting baud rates from 1,200 to 115,200 bps. With 500 VDC isolation and a 2-wire shielded transmission method, the module ensures reliable data exchange in industrial environments.
In practical applications, the Delta RTU-485 is used to extend digital and analog I/O over long distances in factories, utilities, and process automation setups. It allows PLC panels to communicate with remote field devices using Delta PLC 485 Communication, reducing wiring complexity and improving system scalability. The module is commonly deployed in conveyors, pumping stations, material handling systems, and distributed control panels.
The Delta RTU-485 PLC is engineered for long-term industrial use with IEC 61131-2 vibration and shock immunity, wide operating temperature tolerance, and secure terminal connectivity. As part of the Delta PLC Remote I/O Modules ecosystem, it supports consistent system integration, stable communication performance, and compatibility with DVP-S series PLC architectures used across industrial automation installations.
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