Honeywell UDC2500 User Manual

Introduction
vii UDC2500 Universal Digital Controller Product Manual 4/07
5.5 Input 1 Calibration Procedure.....................................................................................................144
5.6 Input 2 Set Up Wiring.................................................................................................................146
5.7 Input 2 Calibration Procedure.....................................................................................................147
5.8 Restore Input Factory Calibration...............................................................................................149
6 OUTPUT CALIBRATION...................................................................................151
6.1 Overview.....................................................................................................................................151
6.2 Current Output Calibration .........................................................................................................152
6.3 Auxiliary Output Calibration......................................................................................................154
6.4 Restore Output Factory Calibration Procedure...........................................................................156
7 TROUBLESHOOTING/SERVICE......................................................................158
7.1 Overview.....................................................................................................................................158
7.2 Troubleshooting Aids..................................................................................................................159
7.3 Power-up Tests............................................................................................................................161
7.4 Status Tests .................................................................................................................................161
7.5 Background Tests........................................................................................................................162
7.6 Controller Failure Symptoms......................................................................................................164
7.7 Troubleshooting Procedures .......................................................................................................165
7.8 Restoring Factory Configuration ................................................................................................174
7.9 Software Upgrades......................................................................................................................175
8 PARTS LIST......................................................................................................177
8.1 Exploded View............................................................................................................................177
8.2 Removing the chassis..................................................................................................................179
9 MODBUS RTU FUNCTION CODES..................................................................180
9.1 Overview.....................................................................................................................................180
9.2 General Information....................................................................................................................180
9.3 Function Code 20 (14h) - Read Configuration Reference Data..................................................182
9.3.1 Read Configuration Examples .........................................................................................184
9.4 Function Code 21 (15h) - Write Configuration Reference Data.................................................186
9.4.1 Write Configuration Examples ........................................................................................188
10 MODBUS READ, WRITE AND OVERRIDE PARAMETERS PLUS EXCEPTION
CODES........................................................................................................................189
10.1 Overview.................................................................................................................................189
10.2 Reading Control Data..............................................................................................................190
10.3 Read Software Options Status.................................................................................................191
10.4 Miscellaneous Read Onlys......................................................................................................192

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