Key facts
- Brand
- Honeywell
- Model
- UDC2300
- Category
- Automation control Equipment
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2026-10-03
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Honeywell UDC 2300/3000/3300/5000/6000/6300 RS422/485 ASCII Communications Option Manual
The RS422/485 ASCII Communications Option adds serial networking capability to Honeywell Universal Digital Controllers (UDC 2300, 3000, 3300, 5000, 6000, 6300). It enables one‑parameter‑at‑a‑time read and write operations using standard RS‑422/485 hardware.
The manual covers an overview of the option, installation steps, communication setup, read/write procedures, parameter override for each UDC model, operating instructions, an ASCII conversion table, and cable specifications required for reliable communication.
Honeywell UDC2300 specifications
| Input Accuracy | ±0.25% of full scale typical |
|---|---|
| Resolution | 15‑bit typical |
| Sampling Rate | Six times per second |
| Temperature Stability | ±0.025% of full scale span per °C typical |
| Output Current Range | 0 to 21 mA |
| Output Resolution | 11 bits for 0‑21 mA |
| Power Supply Voltage | 90‑264 Vac, 50/60 Hz |
| Front Panel IP Rating | IP65 |
Source: Honeywell UDC2300 Universal Digital Controller User Manual
All Honeywell UDC2300 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What communication options are available for the UDC2300?
The controller can be equipped with an optional RS‑422/485 ASCII or Modbus RTU communications interface for linking to a host computer or PLC.
From: Honeywell UDC2300 Universal Digital Controller User Manual
What is the input accuracy of the controller?
The typical input accuracy is ±0.25 % of full scale.
From: Honeywell UDC2300 Universal Digital Controller User Manual
How many devices can be connected on the communication line?
A maximum of 15 devices can be connected to the RS422/485 network.
From: Honeywell UDC 2300/3000/3300/5000/6000/6300 RS422/485 ASCII Communications Option Manual
What baud rate does the communications option use?
The option operates at a baud rate of 19.2 kbps.
From: Honeywell UDC 2300/3000/3300/5000/6000/6300 RS422/485 ASCII Communications Option Manual
What is the warranty period for the UDC2300 controller?
The controller carries a two‑year warranty.
From: Honeywell UDC2300 Universal Digital Controller Product Manual
What does the warning symbol indicate in the manual?
It warns of a risk of electric shock where voltages greater than 30 Vrms, 42.4 Vpeak, or 60 Vdc may be accessible.
From: Honeywell UDC2300 Universal Digital Controller Product Manual