Honeywell UDC2500 User Manual

Modbus RTU Function Codes
4/07 UDC2500 Universal Digital Controller Product Manual 181
Register Address Structure
Table 9-1 Integer Parameter Type
Register
Numbers
(Dec)
Name Access Notes
1 Type = 1 NOT SUPPORTED 16-bit Unsigned Integer
2 Attribute NOT SUPPORTED 1 = Read Only,
2 = Read/Write
3 Value (16 bit integer) Read / Write
4 Not Used NOT SUPPORTED
5 Low Range (16 bit integer) NOT SUPPORTED
6 Not Used NOT SUPPORTED
7 High Range (16 bit Integer) NOT SUPPORTED
8 Not Used NOT SUPPORTED
9 to 13 Description Text (ASCII string) NOT SUPPORTED
Table 9-2 Floating Point Parameter Type
Register
Numbers
(Dec)
Name Access Notes
1 Type = 2 NOT SUPPORTED IEEE Floating Point
2 Attribute NOT SUPPORTED 1 = Read Only,
2 = Read/Write
3 Value (float high word) Read / Write
4 Value (float low word) NOT SUPPORTED
5 Low Range (float high word) NOT SUPPORTED
6 Low Range (float low word) NOT SUPPORTED
7 High Range (float high word) NOT SUPPORTED
8 High Range (float low word) NOT SUPPORTED
9 to 13 Description Text (ASCII string) NOT SUPPORTED
Register Count
The register count depends on the data format of the registers being read or written.
Integer data is represented in sixteen bits and is transferred high byte first.
Floating point data is transferred in IEEE 32-bit format.
The register count definitions are:
0001 = Integer Data
0002 = Floating Point Data

Honeywell UDC2500 Specifications

General

Type	Universal Digital Controller
Alarm Relays	Up to 2 alarm relays
Communication	RS485 Modbus RTU
Mounting	Panel Mount
Display	Dual 4-digit LED
Input Types	Thermocouple, RTD, mA, V
Control Modes	On/Off, PID
Output Types	Relay, mA, V
Power Supply	100-240 VAC, 24V DC
Dimensions	96x96x132 mm