Key facts
- Brand
- Delta
- Model
- RTU-485
- Industry
- Industrial
- Documents
- 3
- Languages
- ZH
- Last added
- 2011-12-18
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Delta RTU-485 Modbus Remote I/O Communication Module Application Manual
This manual describes the Delta RTU-485 Modbus remote I/O communication module, its features, and how to install and operate it safely. It includes safety warnings, wiring, address setting, and configuration of communication parameters.
Key sections cover hardware dimensions, LED indicator meanings, error codes, supported Modbus function codes, and example applications with DVP‑28SV PLCs. Technical specifications such as power supply, communication interface, I/O capacity, and environmental limits are also listed. This manual is written in Chinese.
Delta RTU-485 specifications
| Power Supply | 24 VDC (-15% ~ +20%) |
|---|---|
| Communication Speed Options | 1,200 – 115,200 bps (various baud rates) |
| Address Setting Range | H’01~H’F0 (decimal 1‑240) |
| Operating Temperature | 0 °C ~ 55 °C |
| Maximum Digital I/O Points | 128 inputs, 128 outputs |
| Maximum Special I/O Modules | 8 modules |
Source: Delta RTU-485 Modbus Remote I/O Communication Module User Manual
All Delta RTU-485 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
How do I set the communication address on the RTU-485?
Use the address‑setting switch; valid addresses are H'01 to H'F0 (decimal 1‑240).
From: Delta RTU-485 Modbus Remote I/O Communication Module Application Manual
How do I set the communication address of the RTU-485?
Use the address setting switches; the valid range is H’01 to H’F0 (decimal 1‑240). The address must be set with power off and cannot be changed while the unit is running.
From: Delta RTU-485 Modbus Remote I/O Communication Module User Manual
Which serial communication speeds are supported?
The RTU‑485 supports baud rates of 1,200, 2,400, 4,800, 9,600, 19,200, 38,400, 57,600 and 115,200 bps.
From: Delta RTU-485 Modbus Remote I/O Communication Module User Manual
Which baud rates are supported by the RTU-485?
The module supports baud rates from 1,200 bps up to 115,200 bps.
From: Delta RTU-485 Modbus Communication Module Operating Manual
How many digital I/O points does the RTU-485 provide?
It provides 128 digital inputs and 128 digital outputs.
From: Delta RTU-485 Modbus Communication Module Operating Manual