Honeywell UDC 2300, UDC 3000, UDC 3300, UDC 5000, UDC 6000 User Manual

UDC 2300

UDC 3000

UDC 3300

UDC 5000

UDC 6000

UDC 6300 Universal Digital Controllers

RS422/485 ASCII Communications

Option

Product Manual

51-51-25-35G 5/99

Copyright, Notices, and Trademarks

Printed in U.S.A. – © Copyright 1999 by Honeywell Inc.

Rev G, 5/99

While this information is presented in good faith and believed to be accurate, Honeywell disclaims the implied warranties of merchantability and fitness for a particular purpose and makes no express warranties except as may be stated in its written agreement with and for its customer.

In no event is Honeywell liable to anyone for any indirect, special, or consequential damages. The information and specifications in this document are subject to change without notice.

This document was prepared using Information Mapping® methodologies and formatting principles.

UDC 2300, UDC 3000, UDC 3300, UDC 5000, UDC 6000, and UDC 6300 are U.S. trademarks of Honeywell Inc.

Information Mapping® is a registered trademark of Information Mapping, Inc.

Honeywell

Industrial Automation and Control

Automation College

100 Virginia Drive

Fort Washington, PA 19034

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About This Publication

The UDC manual for RS422/485 ASCII communications option contains the following sections:

Section 1	–	Overview
Section 2	–	Installation
Section 3	–	Establishing Communications
Section 4	– Read and Write Operations
Section 5	– Reading, Writing, and Overriding Parameters on UDC 3000
		Versa-Pro Controllers
Section 6	– Reading, Writing and Overriding Parameters on UDC 5000
		Ultra-Pro Controllers
Section 7	– Reading, Writing, and Overriding Parameters on UDC 6000
		Process Controllers
Section 8	– Reading, Writing, and Overriding Parameters on UDC 6300
		Process Controllers
Section 9	– Reading, Writing, and Overriding Parameters on UDC 3300
		Process Controllers
Section 10	– Reading, Writing, and Overriding Parameters on UDC 2300
		Process Controllers
Section 11	– Operating the Controller with Communications Option
Section 12	–	ASCII Conversion Table
Section 13	–	Cable Specifications

Communication between your computer and the UDC Controller is accomplished for one piece of information (parameter) at a time. Each parameter has an associated identifying code.

The Identifying Code and Format Code will be listed along with information pertaining to that parameter.

The identifying codes are grouped in the same order as they appear in the controller configuration prompts.

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	Contents
SECTION 1 – OVERVIEW ..................................................................................................		1
1.1	Introduction ...................................................................................................	1
1.2	Message Exchange Protocols ......................................................................	2
1.3	Field Upgrade ...............................................................................................	3
SECTION 2 – INSTALLATION ...........................................................................................		5
2.1	Introduction ...................................................................................................	5
2.2	RS232 to RS485 Converters ........................................................................	6
2.3	Using a Black Box Converter........................................................................	7
2.4	Using a Westermo Converter .......................................................................	9
2.5	Wiring Diagrams .........................................................................................	11
SECTION 3 – ESTABLISHING COMMUNICATIONS AND TESTING ............................		15
3.1	Preparing the Controller for Communications.............................................	15
3.2	Programming ..............................................................................................	19
3.3	Message Exchange ....................................................................................	20
3.4	Request Messages .....................................................................................	21
3.5	Response Messages ..................................................................................	24
3.6	Status Codes ..............................................................................................	26
3.7	Checksum Protocol (for Data Security) ......................................................	28
3.8	Shed ...........................................................................................................	34
3.9	Loopback (UDC 2300, UDC 3000, UDC 3300 Only) ..................................	35
3.10	Recovering from Communications Failures................................................	37
SECTION 4 – READ AND WRITE OPERATIONS ...........................................................		41
4.1	Read Operations.........................................................................................	41
4.2	Read Analog Parameters ...........................................................................	42
4.3	Read Digital Parameters.............................................................................	45
4.4	Write Operations.........................................................................................	47
4.5	Write Analog Parameters............................................................................	48
4.6	Write Digital Parameters.............................................................................	52
SECTION 5 – READ, WRITE AND OVERRIDE PARAMETERS – UDC3000 .................		55
5.1	UDC 3000 Overview ...................................................................................	55
5.2	UDC 3000 Reading Control Data ...............................................................	57
5.3	UDC 3000 Read Option Status...................................................................	58
5.4	UDC 3000 Miscellaneous Read Only’s.......................................................	59
5.5	UDC 3000 Setpoints ...................................................................................	61
5.6	UDC 3000 Using a Computer Setpoint.......................................................	62
5.7	UDC 3000 Overriding Input 1 .....................................................................	63
5.8	UDC 3000 Canceling the Override .............................................................	64
5.9	UDC 3000 Reading or Changing the Output ..............................................	65
5.10	UDC 3000 Local Setpoint/PID Set Selection /Setpoint Ramp Status .........	66
5.11	UDC 3000 Configuration Parameters .........................................................	68
SECTION 6 – READ, WRITE AND OVERRIDE PARAMETERS – UDC5000 .................		85
6.1	Overview.....................................................................................................	85
6.2	Reading Control Data .................................................................................	88
6.3	Option Status ..............................................................................................	89

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6.4	Miscellaneous Read Only’s ........................................................................	90
6.5	Setpoints ....................................................................................................	92
6.6	Using a Computer Setpoint ........................................................................	93
6.7	Overriding the Inputs..................................................................................	95
6.8	PV, Setpoint, or Input Override Status or Cancellation ..............................	97
6.9	Reading or Changing the Output ...............................................................	98
6.10	Local Setpoint/PID Selection/Setpoint Ramp Status..................................	99
6.11	Configuration Parameters ........................................................................	101
SECTION 7 – READ, WRITE AND OVERRIDE PARAMETERS – UDC6000...............		127
7.1	Overview ..................................................................................................	127
7.2	Reading Control Data...............................................................................	130
7.3	Read Options Status ................................................................................	131
7.4	Miscellaneous Read Only’s ......................................................................	132
7.5	Setpoints ..................................................................................................	134
7.6	Using a Computer Setpoint ......................................................................	135
7.7	PV or Setpoint Override Selections..........................................................	137
7.8	Reading or Changing the Output .............................................................	138
7.9	Local Setpoint/PID Selection/Setpoint Ramp Status................................	139
7.10	Configuration Parameters ........................................................................	142
SECTION 8 – READ, WRITE AND OVERRIDE PARAMETERS – UDC6300...............		177
8.1	Overview ..................................................................................................	177
8.2	Reading Control Data...............................................................................	180
8.3	Read Options Status ................................................................................	181
8.4	Miscellaneous Read Only’s ......................................................................	182
8.5	Setpoints ..................................................................................................	186
8.6	Using a Computer Setpoint ......................................................................	187
8.7	PV or Setpoint Override Selections..........................................................	189
8.8	Reading or Changing the Output .............................................................	190
8.9	Local Setpoint/PID Selection/Setpoint Ramp Status................................	191
8.10	Configuration Parameters ........................................................................	194
SECTION 9 – READ, WRITE AND OVERRIDE PARAMETERS – UDC3300...............		231
9.1	UDC 3300 Overview ................................................................................	231
9.2	UDC 3300 Reading Control Data.............................................................	234
9.3	UDC 3300 Read Options Status ..............................................................	235
9.4	UDC 3300 Miscellaneous Read Only’s ....................................................	236
9.5	UDC 3300 Setpoints ................................................................................	238
9.6	UDC 3300 Using a Computer Setpoint ....................................................	239
9.7	UDC 3300 PV or Setpoint Override Selections........................................	241
9.8	UDC 3300 Reading or Changing the Output............................................	242
9.9	UDC 3300 Local Setpoint/PID Selection/Setpoint Ramp Status ..............	243
9.10	UDC 3300 Configuration Parameters ......................................................	246
SECTION 10 – READ, WRITE AND OVERRIDE PARAMETERS – UDC2300.............		277
10.1	UDC 2300 Overview ................................................................................	277
10.2	UDC 2300 Reading Control Data.............................................................	280
10.3	UDC 2300 Read Options Status ..............................................................	281
10.4	UDC 2300 Miscellaneous Read Only’s ....................................................	282
10.5	UDC 2300 Setpoints ................................................................................	284
10.6	UDC 2300 Using a Computer Setpoint ....................................................	285
10.7	UDC 2300 PV or Setpoint Override Selections........................................	287
10.8	UDC 2300 Reading or Changing the Output............................................	288
10.9	UDC 2300 Local Setpoint/PID Selection/Setpoint Ramp Status ..............	289
10.10	UDC 2300 Configuration Parameters ......................................................	292

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SECTION 11 – OPERATING THE CONTROLLER WITH COMMUNICATIONS
	OPTION ....................................................................................................	311
11.1	Operation ..................................................................................................	311
SECTION 12 – ASCII CONVERSION TABLE................................................................		312
12.1	Overview...................................................................................................	312
SECTION 13 – CABLE SPECIFICATIONS....................................................................		314
13.1	Introduction ...............................................................................................	314

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	Figures
Figure 2-1	Black Box Converter Wiring Connections ....................................................	8
Figure 2-2	Recommended Switch Settings for Westermo Converter ..........................	10
Figure 2-3	Westermo Converter Wiring Connections..................................................	10
Figure 2-4	UDC3000/3300 Connections .....................................................................	11
Figure 2-5	UDC6000/6300 Connections .....................................................................	12
Figure 2-6	Connections (without Digital Input Option) .................................................	13
Figure 2-7	UDC2300 Connections ..............................................................................	14
Figure 3-1	Message Exchanges ..................................................................................	20
Figure 3-2	Request Message Fields............................................................................	21
Figure 3-3	Response Message Fields Information ......................................................	24
Figure 3-4	Request Format for Checksum Protocol ....................................................	28
Figure 3-5	Example of Checksum Calculation.............................................................	30
Figure 3-6	Using Checksum Protocol ..........................................................................	31
Figure 3-7	Success Response Message Fields ..........................................................	32
Figure 3-8	Failure Response Message Fields .............................................................	33
Figure 3-9	Lost Messages ...........................................................................................	37
Figure 3-10	Timing a Message Exchange and Checking for a Response.....................	38
Figure 4-1	Read Analog Parameter Message Exchange ............................................	44
Figure 4-2	Read Digital Parameter Message Exchange .............................................	46
Figure 4-3	Write Analog Parameter Message Exchange Example .............................	51
Figure 4-4	Write Digital Parameter Message Exchange Example...............................	54
Figure 5-1	Option Status Information ..........................................................................	58
Figure 5-2	I.D. Code 250 Indications...........................................................................	67
Figure 5-3	Digital Input Combinations .........................................................................	84
Figure 6-1	Option Status Information ..........................................................................	89
Figure 6-2	I.D. Code 250 Indications.........................................................................	100
Figure 7-1	Option Status Information ........................................................................	131
Figure 7-2	I.D. Code 250 Indications.........................................................................	140
Figure 7-3	Digital Input Combinations .......................................................................	172
Figure 8-1	Option Status Information ........................................................................	181
Figure 8-2	I.D. Code 250 Indications.........................................................................	192
Figure 8-3	Digital Input Combinations, Inputs 1 and 2...............................................	225
Figure 9-1	Option Status Information ........................................................................	235
Figure 9-2	I.D. Code 250 Indications.........................................................................	244
Figure 9-3	Digital Input Combinations, Inputs 1 and 2...............................................	272
Figure 10-1	Option Status Information ........................................................................	281
Figure 10-2 I.D. Code 250 Indications.........................................................................		290

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	Tables
Table 1-1	Rules and Regulations for Configuration Protocol........................................	2
Table 1-2	Upgrade PWB Part Numbers........................................................................	3
Table 2-1	Converters ....................................................................................................	6
Table 2-2	Black Box Converter Wiring Connections Procedure ...................................	7
Table 2-3	Terminal Connections for Black Box Converters ..........................................	8
Table 2-4	Westermo Converter Configuration and Wiring Procedure ..........................	9
Table 2-5	Terminal Connections for Westermo Converters........................................	10
Table 3-1	Communications Parameters .....................................................................	15
Table 3-2	Controller Procedure for Communication Parameters................................	17
Table 3-3	Programming Statements ...........................................................................	19
Table 3-4	Request Message Fields Definitions...........................................................	22
Table 3-5	Response Message Fields Definitions........................................................	25
Table 3-6	Request Message Status Codes ................................................................	26
Table 3-7	UDC Status Codes .....................................................................................	27
Table 3-8	Calculating the Checksum Procedure ........................................................	29
Table 3-9	Example of Loopback Request Message ...................................................	35
Table 3-10	Example of Loopback Response Message .............................................	36
Table 3-11	Programming Example ............................................................................	36
Table 4-1	Analog Parameter Request Format ............................................................	42
Table 4-2	Analog Parameter Response Format .........................................................	43
Table 4-3	Digital Parameter Request Format .............................................................	45
Table 4-4	Digital Parameter Response Format ..........................................................	46
Table 4-5	Write Message Exchange Steps.................................................................	47
Table 4-6	Write Request Format for Analog I.D. Codes .............................................	48
Table 4-7	Busy Response...........................................................................................	49
Table 4-8	Ready Requests .........................................................................................	49
Table 4-9	Is Ready Response ....................................................................................	50
Table 4-10	Write Request Format for Digital I.D. Codes ...........................................	52
Table 4-11	Busy Response .......................................................................................	53
Table 4-12	Ready Request........................................................................................	53
Table 4-13	Is Ready Response .................................................................................	53
Table 5-1	Control Data Parameters – UDC3000 ........................................................	57
Table 5-2	Option Status ..............................................................................................	58
Table 5-3	Miscellaneous Read Only’s.........................................................................	59
Table 5-4	Error Status Definitions...............................................................................	60
Table 5-5	Setpoint Code Selections ...........................................................................	61
Table 5-6	Setpoint Associated Parameters ................................................................	61
Table 5-7	Computer Setpoint Selection ......................................................................	62
Table 5-8	Computer Setpoint Associated Parameters................................................	62
Table 5-9	Input 1 Override Code ................................................................................	63
Table 5-10	Input Override Associated Parameters....................................................	63
Table 5-11	PV or Setpoint Override Cancellation......................................................	64
Table 5-12	Reading or Changing the Output.............................................................	65
Table 5-13	Associated Output Codes........................................................................	65
Table 5-14	LSP/PID Set Selection and Setpoint Ramp Status..................................	66
Table 5-15	Setup Group-Tuning................................................................................	69
Table 5-16	Setup Group-SP Ramp, Rate, or SP Program ........................................	71
Table 5-17	Setup Group-Adaptive Tune....................................................................	74
Table 5-18	Setup Group-Algorithm............................................................................	75
Table 5-19	Setup Group-Input 1................................................................................	76
Table 5-20	Setup Group-Input 2................................................................................	78
Table 5-21	Setup Group-Control ...............................................................................	79

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Table 5-22	Setup Group-Options ..............................................................................	81
Table 5-23	Setup Group-COMRS422.......................................................................	82
Table 5-24	Setup Group-Alarms ...............................................................................	83
Table 6-1	Control Data Parameters – UDC5000........................................................	88
Table 6-2	Option Status .............................................................................................	89
Table 6-3	Miscellaneous Read Only’s ........................................................................	90
Table 6-4	Error Status Definitions ..............................................................................	91
Table 6-5	Setpoint Code Selections ...........................................................................	92
Table 6-6	Setpoint Associated Parameters ................................................................	92
Table 6-7	Computer Setpoint Selections....................................................................	93
Table 6-8	Computer Setpoint Associated Parameters ...............................................	94
Table 6-9	Input Override Codes .................................................................................	95
Table 6-10	Input Override Associated Parameters ...................................................	96
Table 6-11	PV, Setpoint , or Input Override Cancellation .........................................	97
Table 6-12	Reading or Changing the Output ............................................................	98
Table 6-13	Associated Output Codes .......................................................................	98
Table 6-14	I.D. Code 250 Reads ..............................................................................	99
Table 6-15	I.D. Code 250 Writes.............................................................................	100
Table 6-16	Setup Group-Tuning (Loop 1)*..............................................................	102
Table 6-17	Setup Group-Tuning 2* (Loop 2)...........................................................	103
Table 6-18	Setup Group-Setpoint Ramp/Program..................................................	104
Table 6-19	Setpoint Program Ramp and Soak Identifying Codes for Each Segment106
Table 6-20	Setup Group-Autotune/Adaptive Tune..................................................	107
Table 6-21	Setup Group-Algorithm .........................................................................	109
Table 6-22	Setup Group-Output Algorithm .............................................................	112
Table 6-23	Setup Group-Input 1 (Loop 1 Address only) .........................................	113
Table 6-24	Setup Group-Input 2 (Loop 1 Address only) .........................................	115
Table 6-25	Setup Group-Input 3 (Loop 1 Address only) .........................................	118
Table 6-26	Setup Groups-Control and Control 2 ....................................................	120
Table 6-27	Setup Group-Options ............................................................................	122
Table 6-28	Setup Group-Communications..............................................................	123
Table 6-29	Setup Group-Alarms .............................................................................	124
Table 6-30	Setup Groups-Display...........................................................................	126
Table 7-1	Control Data Parameters – UDC6000......................................................	130
Table 7-2	Option Status ...........................................................................................	131
Table 7-3	Miscellaneous Read Only’s ......................................................................	132
Table 7-4	Error Status Definitions ............................................................................	133
Table 7-5	Setpoint Code Selections .........................................................................	134
Table 7-6	Setpoint Associated Parameters ..............................................................	134
Table 7-7	Computer Setpoint Selection....................................................................	135
Table 7-8	Computer Setpoint Associated Parameters .............................................	136
Table 7-9	PV or Setpoint Override Selections..........................................................	137
Table 7-10	Reading or Changing the Output ..........................................................	138
Table 7-11	Associated Output Codes .....................................................................	138
Table 7-12	I.D. Code 250 Reads ............................................................................	139
Table 7-13	I.D. Code 250 Writes.............................................................................	141
Table 7-14	Setup Group-Tuning (Loop 1)*..............................................................	143
Table 7-15	Setup Group-Tuning 2* (Loop 2)...........................................................	145
Table 7-16	Setup Group-Setpoint Ramp/Rate ........................................................	147
Table 7-17	Setup Group-Adaptive Tune .................................................................	148
Table 7-18	Setup Group-Algorithm .........................................................................	149
Table 7-19	Setup Group-Advanced Math ...............................................................	154
Table 7-20	Setup Group-Output Algorithm .............................................................	159
Table 7-21	Setup Group-Input 1 (Loop 1 Address only) .........................................	160
Table 7-22	Setup Group-Input 2 (Loop 1 Address only) .........................................	161
Table 7-23	Setup Group-Input 3 (Loop 1 Address only) .........................................	162
Table 7-24	Setup Group-Input 4 (Loop 1 Address only) .........................................	163

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Table 7-25	Setup Group-Input 5 (Loop 1 Address only)..........................................	164
Table 7-26	Setup Group-Control and Control 2.......................................................	166
Table 7-27	Setup Groups-Options...........................................................................	169
Table 7-28	Setup Group-Communications ..............................................................	173
Table 7-29	Setup Group-Alarms (Loop 1 Address only)..........................................	174
Table 7-30	Setup Group-Display .............................................................................	175
Table 8-1	Control Data Parameters – UDC6300 ......................................................	180
Table 8-2	Option Status ............................................................................................	181
Table 8-3	Miscellaneous Read Only’s.......................................................................	182
Table 8-4	Error Status Definitions.............................................................................	185
Table 8-5	Setpoint Code Selections .........................................................................	186
Table 8-6	Setpoint Associated Parameters ..............................................................	186
Table 8-7	Computer Setpoint Selection ....................................................................	187
Table 8-8	Computer Setpoint Associated Parameters..............................................	188
Table 8-9	PV or Setpoint Override Selections ..........................................................	189
Table 8-10	Reading or Changing the Output...........................................................	190
Table 8-11	Associated Output Codes......................................................................	190
Table 8-12	I.D. Code 250 Reads.............................................................................	191
Table 8-13	I.D. Code 250 Writes .............................................................................	193
Table 8-14	Setup Group-Tuning (Loop 1)* ..............................................................	195
Table 8-15	Setup Group-Tuning 2* (Loop 2) ...........................................................	197
Table 8-16	Setup Group-Setpoint Ramp/Rate ........................................................	199
Table 8-17	Setup Group-Adaptive Tune..................................................................	200
Table 8-18	Setup Group-Algorithm..........................................................................	201
Table 8-19	Setup Group-Advanced Math................................................................	207
Table 8-20	Setup Group-Output Algorithm..............................................................	212
Table 8-21	Setup Group-Input 1 (Loop 1 Address only)..........................................	213
Table 8-22	Setup Group-Input 2 (Loop 1 Address only)..........................................	214
Table 8-23	Setup Group-Input 3 (Loop 1 Address only)..........................................	215
Table 8-24	Setup Group-Input 4 (Loop 1 Address only)..........................................	216
Table 8-25	Setup Group-Input 5 (Loop 1 Address only)..........................................	217
Table 8-26	Setup Group-Control and Control 2.......................................................	219
Table 8-27	Setup Groups-Options...........................................................................	222
Table 8-28	Setup Group-Communications ..............................................................	227
Table 8-29	Setup Group-Alarms (Loop 1 Address only)..........................................	228
Table 8-30	Setup Group-Display .............................................................................	230
Table 9-1	Control Data Parameters – UDC3300 ......................................................	234
Table 9-2	Option Status ............................................................................................	235
Table 9-3	Miscellaneous Read Only’s.......................................................................	236
Table 9-4	Error Status Definitions.............................................................................	237
Table 9-5	Setpoint Code Selections .........................................................................	238
Table 9-6	Setpoint Associated Parameters ..............................................................	238
Table 9-7	Computer Setpoint Selection ....................................................................	239
Table 9-8	Computer Setpoint Associated Parameters..............................................	240
Table 9-9	PV or Setpoint Override Selections ..........................................................	241
Table 9-10	Reading or Changing the Output...........................................................	242
Table 9-11	Associated Output Codes......................................................................	242
Table 9-12	LSP/PID Set Selection and Setpoint Ramp Status................................	243
Table 9-13	I.D. Code 250 Writes .............................................................................	245
Table 9-14	Setup Group-Tuning (Loop 1)* ..............................................................	247
Table 9-15	Setup Group-Tuning 2* (Loop 2) ...........................................................	249
Table 9-16	Setup Group-Setpoint Ramp/Rate ........................................................	251
Table 9-17	Setup Group-Adaptive Tune..................................................................	254
Table 9-18	Setup Group-Algorithm..........................................................................	255
Table 9-19	Setup Group-Output Algorithm..............................................................	260
Table 9-20	Setup Group-Input 1 (Loop 1 Address only)..........................................	261
Table 9-21	Setup Group-Input 2 (Loop 1 Address only)..........................................	263
Table 9-22	Setup Group-Input 3 (Loop 1 Address only)..........................................	265

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Table 9-23	Setup Group-Control and Control 2 ......................................................	266
Table 9-24	Setup Groups-Options ..........................................................................	269
Table 9-25	Setup Group-Communications..............................................................	273
Table 9-26	Setup Group-Alarms (Loop 1 Address only) .........................................	274
Table 9-27	Setup Group-Display.............................................................................	276
Table 10-1	Control Data Parameters – UDC2300 ..................................................	280
Table 10-2	Option Status ........................................................................................	281
Table 10-3	Miscellaneous Read Only’s...................................................................	282
Table 10-4	Error Status Definitions .........................................................................	283
Table 10-5	Setpoint Code Selections......................................................................	284
Table 10-6	Setpoint Associated Parameters...........................................................	284
Table 10-7	Computer Setpoint Selection ................................................................	285
Table 10-8	Computer Setpoint Associated Parameters..........................................	286
Table 10-9	PV or Setpoint Override Selections ......................................................	287
Table 10-10	Reading or Changing the Output ..........................................................	288
Table 10-11	Associated Output Codes .....................................................................	288
Table 10-12	LSP/PID Set Selection and Setpoint Ramp Status ...............................	289
Table 10-13	I.D. Code 250 Writes.............................................................................	291
Table 10-14	Setup Group-Timer ...............................................................................	293
Table 10-15	Setup Group-Tuning .............................................................................	293
Table 10-16	Setup Group-Setpoint Ramp/Rate ........................................................	295
Table 10-17	Setup Group-Adaptive Tune .................................................................	298
Table 10-18	Setup Group-Algorithm .........................................................................	299
Table 10-19	Setup Group-Input 1 .............................................................................	300
Table 10-20	Setup Group-Input 2 .............................................................................	304
Table 10-21	Setup Group-Control.............................................................................	306
Table 10-22	Setup Group-Communications..............................................................	308
Table 10-23	Setup Group-Alarms .............................................................................	309
Table 11-1	Emergency Manual Procedure .............................................................	311
Table 12-1	ASCII Character Codes ........................................................................	312
Table 12-2	Hexadecimal to Binary ..........................................................................	313
Table 13-1	Cable Specifications..............................................................................	314

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	Parameters
ADDRESS 2 ....................................................................	Communication Address (Loop 2)
ADDRESS .......................................................................	Communication Address (Loop 1)
BAUD RATE ...................................................................................	Baud Rate (bits/second)
COM STATE........................................................................................	Communication State
CSP BIAS ..................................................................................	Commun. SP Bias (Loop 1)
CSP RATIO ..............................................................................	Commun. SP Ratio (Loop 1)
CSP2 BIAS ................................................................................	Commun. SP Bias (Loop 2)
CSP2 RATIO ............................................................................	Commun. SP Ratio (Loop 2)
DUPLEX ....................................................................................................	Duplex Operation
PARITY.........................................................................................................................	Parity
SHED MODE..........................................................	Controller Shed Mode and Output Level
SHED SP.............................................................................................	Shed Setpoint Recall
SHED TIME ..........................................................................................................	Shed Time
TX DELAY .............................................................................................	Transmission Delay
UNITS..................................................................................................	Communication Units

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References

	Publication	Publication
	Title	Number
UDC 3000 Controller Product Manual		51-52-25-07
UDC 3000 Limit Controller Product Manual		51-52-25-09
UDC 5000 Controller Product Manual		51-51-25-17
UDC 6000 Controller Product Manual		51-52-25-32
UDC 6300 Controller Product Manual		51-52-25-45
UDC 6300	Indicator Product Manual	51-52-25-46
UDC 3300	Controller Product Manual	51-52-25-55
UDC 3300	Limit Controller Product Manual	51-52-25-56
UDC 2300	Controller Product Manual	51-52-25-73

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Section 1 – Overview

1.1Introduction

The communications option

Monitor or slave mode

The RS422/485 Communications Option on the UDC Controller provides a serial multi-drop link whereby up to fifteen UDC controllers connect directly to a host computer.

The UDC controller can be placed in monitor or slave by the host computer. When monitored, the controller will send Configuration, Tuning, and Operating parameters to the host computer. When in slave, the controller will be switched through the communications interface board to "Slave" operation. This means that the computer can write configuration or tuning information into any controller on the link including overriding of PV, the setpoint, and output.

Message exchanges	The computer and the controllers talk to each other through a series of
	message exchanges. There are two RS422/485 message exchange
	protocols: Configuration or Loopback.

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1.2Message Exchange Protocols

Configuration	Table 1-1 lists the rules and regulations of configuration protocol.
protocol

Loopback

Checksum

Controller Address

Keyboard

Configuration

Table 1-1 Rules and Regulations for Configuration Protocol

Protocol

Data Type

Transactions

Read

Write

Busy

Ready

Rule

The configuration protocol permits reading or writing of data type transactions such as PV, SP, or Output, as well as configuration type transactions such as Tuning, Algorithm selections, etc.

Read transactions can be performed in either UDC state: Monitor or Slave.

Write transactions can only be performed in the Slave mode.

Following any Write message, a Busy indication is returned.

A Ready transaction is required as the next message request to determine if the information received was correct.

Transaction Limits In a Write transaction, only single items are permitted to be written, however, for Read transactions, single or multi-item parameters may be requested.

Loopback protocol is also provided for link tests. With this message exchange you can test the Communications link between your computer and the controllers on the link. The host computer sends a series of ASCII characters to the desired device, and the device returns the characters it received to the host computer.

There is an optional transaction called "Checksum" which is used to increase security on the RS422/485 link. Used with any message exchange, it enables both your computer and controller to detect messages that have been interrupted by line noise.

Each controller will have its own specific address. If you have a 2 loop controller, there will be a specific address for each loop.

Address, Baud Rate, and Parity are keyboard selectable as well as Shed Time, Shed Mode, and Output Level.

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1.3Field Upgrade

Adding the communications option

ATTENTION

RS422/485 Communications Option can be added in the field by installing the proper RS422/485 Printed Wiring Board Assembly.

Table 1-2 lists the part numbers required to add the RS422/485 Communication option Printed Wiring Board to the UDC controllers.

Table 1-2 Upgrade PWB Part Numbers

Model

UDC 2300

UDC 3000

UDC 3300

UDC 5000

UDC 6000

UDC 6300

Upgrade PWB Part Numbers

Part Number 51309831-501

Part Number 30756693-501

Part Number 30756693-501 or

Part Number 30756687-502 (Aux Out/RS-485)

Part Number 30755865-502

Part Number 30755865-501

Part Number 30755865-504

Early version UDC 5000 with 28-pin PROM cannot be upgraded to RS422/485 unless the PROM socket has 32-pin receptacles.

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	Section 2 – Installation
2.1	Introduction
General	The Installation section (Section 2) of the UDC Product Manual contains
	information and drawings required to mount and wire the controller. Refer
	to the Controller Product Manual for appropriate information regarding
	the basic installation requirements.

Electrical noise protection

What’s in this section

When installing and wiring the controller, follow the practices that conform to all local codes and ordinances. In addition, be aware of the precautions you should take to avoid electrical noise.

Electrical noise is unwanted electrical signals that provide undesirable effects. Digital equipment is especially sensitive to the effects of electrical noise. The controller has built-in circuits to reduce the effects of this noise.

For information concerning further reduction of electrical noise, refer to "How to Apply Digital Instrumentation in Severe Electrical Noise Environments" – in the UDC Controller Product Manual or Honeywell Document 51-52-05-01.

This section contains the following information:

	Topic	See Page
2.1	Introduction	5
	General	5
	Electrical Noise Protection	5
2.2	RS232 to RS485 Converters	6
2.3	Using a Black Box Converter	7
	Wiring the Black Box converter and the link	7
	Wiring connections	8
	Link devices terminal connections	8
2.4	Using a Westermo Converter	9
	Wiring the Westermo converter and the link	9
	Configuring the Westermo converter and the link	10
	Wiring connections	10
	Link devices terminal connections	10
2.5	Wiring Diagrams	11

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2.2RS232 to RS485 Converters

Overview

Converters

Up to 16 devices on an RS485 link can be connected to your computer by installing a Black Box or Westermo RS232 to RS485 converter between the RS232 port on your computer and the devices on the RS485 link. These devices include:

•UDC2300, UDC3000, UDC 5000, UDC3300, UDC6000, or UDC6300 Controllers with an RS485 Communications Option

Table 2-1 lists the specific information needed to procure either of these converters.

Table 2-1

Converters

Arrangement

Black Box

Converter

Westermo

Converter

(Europe)

Description

Using the RS232 port and a Black Box RS232 to RS485 converter installed between the RS232 port and the first device on the link.

This converter is available from . . .

Black Box Corp

Pittsburgh PA..

Model

IC109A - Stand alone RS232 to RS485/422 converter with opto-isolation

Using the RS232 port and a Westermo RS232 to RS485 converter installed between the RS232 port and the first device on the link.

The Westermo converter can be ordered from a Honeywell sales office, Part Number 46210088-001.

A 2 meter shielded cable with Female/Male DB9/DB25 connectors for use between the PC communication port and the Westermo box is also available,

Part Number 46210061-002

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2.3Using a Black Box Converter

Wiring the Black Box converter and the link

Figure 2-1 shows the wiring diagram and terminal connections for wiring the RS232 to RS485 Black Box converter.

Follow the procedure in Table 2-2 to wire the Black Box converter.

Table 2-3 shows the terminal designation for the devices on the link.

Table 2-2 Black Box Converter Wiring Connections Procedure

Step

1

2

3

4

5

6

Action

Install an appropriate Serial Communication Connector between the Computer serial port and the RS232 input connector of the Black Box converter. See the Black Box data sheet for the required interfacing signals.

Connect one wire to terminal 2 (–).

Connect other wire to terminal 1 (+).

Connect a 120 ohm resistor across 1 and 2.

Set the jumpers on the Black Box converter Printed Circuit Board as follows:

JUMPER	SETTING
XW1A	DCE
W8	B-C (2-wire)
W15	B-C (Data Enabled)
W5	A-B (RTS/CTS delay - normal)
W9	C (0 msec)
W17	C (2 msec)
W16	B (0.1 msec)
S1	OUT (Normal)
S2	ON (RS485 Receiver Terminated)
S3	ON (Line Bias On)

Create a chain of up to 16 devices by connecting them with shielded twisted pair wiring (Belden 9271 Twinax or equivalent) to a maximum total length of 4000 feet(1250 meters).

(See Section 12—Cable Specifications.)

REFER TO TABLE 2-3 FOR TERMINAL DESIGNATIONS OF THE DEVICES ON THE LINK

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2.3 Using a Black Box Converter, Continued

Black Box wiring connections

Figure 2-1 shows the wiring for the Black Box converter and the devices on the link.

Figure 2-1	Black Box Converter Wiring Connections
				Shield
					+
					–	1ST Device
						on Link
Computer	Black Box		1
RS232
	Converter		2	120 Ohm
output
			3	Resistor
			4
					To other devices on link
					Maximum 16 addresses
					120 ohm resistor between A and B
					on last device on link
						22937A
Link devices terminal		Table 2-3 lists the terminal connections between the Black Box converter and the
connections		devices on the communication link.
		Table 2-3		Terminal Connections for Black Box Converters
BLACK BOX		UDC3000		UDC6000	UDC5000	UDC2300
		UDC3300		UDC6300
2			15	23	11	14
1			14	22	12	13

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2.4Using a Westermo Converter

Wiring the Westermo converter and the link

Figure 2-2 shows the recommended switch setting for the WESTERMO converter.

Figure 2-3 shows the wiring diagram and terminal connections for wiring the RS485 Westermo converter.

Follow the procedure in Table 2-4 to configure and wire the Westermo converter.

Table 2-5 shows the terminal designation for the devices on the link.

Table 2-4 Westermo Converter Configuration and Wiring Procedure

Step	Action

1Install an appropriate Serial Communication Connector between the Computer serial port and the RS232 input connector of the Westermo converter. See the Westermo data sheet for the required interfacing signals.

2Configure the switch settings on the Westermo converter as shown in Figure 2-6.

3Connect the shield to terminal 5. See Figure 2-3.

4Connect one wire to terminal 3 (–).

5Connect other wire to terminal 4 (+).

6Connect a 120 ohm resistor across terminals 3 and 4.

7Create a chain of up to 16 Devices by connecting them with shielded twisted pair wiring (Belden 9271 Twinax or equivalent) to a maximum total length of 4000 feet(1250 meters).

(See Section 13—Cable Specifications.)

REFER TO TABLE 2-5 FOR TERMINAL DESIGNATIONS OF THE DEVICES ON THE LINK

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2.4 Using a Westermo Converter, Continued

Configuring the

WESTERMO

Converter

Figure 2-2 shows the recommended switch settings for the WESTERMO converter.

Figure 2-2 Recommended Switch Settings for Westermo Converter

S1				S3			S2
	ON		2		5 6	ON	1	5
230
	OFF		1	3	4	OFF	2 3 4	6
	1	2	3	4	5
Power	Line Connection					V 24/RS-232-C
Supply						CONNECTION
								22933

Westermo wiring connections

Figure 2-3 shows the wiring for the Westermo converter and the devices on the link.

Figure 2-3 Westermo Converter Wiring Connections

Computer

RS232

Westermo

output

Converter

+
–	1ST Device
	on Link

	5
	4
	3	120 Ohm
	2
	1	Resistor
		Shield	To other devices on link
			Maximum 16 addresses
	Twisted pair shield – connect shield		120 ohm resistor between A and B
			on last device on link
	wire with supplied crimp connector

22937

Link devices terminal connections

Table 2-5 shows the terminal connections between the Westermo converter and the devices on the communication link.

Table 2-5 Terminal Connections for Westermo Converters;

Westermo		UDC 3000	UDC 5000	UDC 6000	UDC 2300
Line Connections		UDC 3300		UDC 6300
3		15	11	23	14
4	14		12	22	13

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2.5Wiring Diagrams

Communications option Figure 2-4: UDC3000 and UDC3300

connections

Figure 2-5: UDC6000 and UDC6300

Figure 2-6: UDC5000

Figure 2-7: UDC 2300

Figure 2-4 UDC3000/3300 Connections

		RS422/485
		HALF DUPLEX		Master
	12
		SHD		SHD
	13		1
				TX+/RX+
	14	TX+/RX+
		TX–/RX–		120 Ohm
	15			TX–/RX– Resistor

CAUTION

Do not mix half and full duplex wiring.

To Other	Do not run these
Communication	lines in the same
Instruments	conduit as AC power
(maximum 15)	120 Ohm Resistor
	on Last Leg

	RS422/485
	FULL DUPLEX			Master
12
		1	SHD
13	SHD
			TX+
14	RX+			120 Ohm
			TX–
15	RX–			Resistor
	TX+		RX+
16				120 Ohm
	TX–		RX–
17				Resistor

1Use shielded twisted pair cables (Belden 9271 Twinax or equivalent)

	Do not run these
To Other
	lines in the same
Communication	conduit as AC power
Instruments	120 Ohm Resistor
(maximum 15)
	on Last Leg	24169A

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2.5Wiring Diagrams, Continued

Figure 2-5 UDC6000/6300 Connections

COMMUNICATION MASTER

	(A)	(RTN)	(B)
	D+	SHLD	D–
21			2
22	D+
23
	D–

120 OHMS

			1
		1 Connect shield wires together with Honeywell
TO OTHER
COMMUNICATION			supplied crimp part number 30755381-001
		2 Do not run these lines in the same conduit as AC power.
CONTROLLERS

D– D+

120 OHMS ON LAST LEG

21758A.ppt

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2.5Wiring Diagrams, Continued

Figure 2-6 UDC5000 Connections (without Digital Input Option)

Communication

Master

D+ SHLD D-

1

2

11

12

13

Optional Communication

To Other

Communication

Controllers

4

1Do not run these lines in the same conduit as AC power

2Required for CE Mark Compliance - Kit supplied Part Number

51197612-508 contains 8 Ferrite filters

22330A.ppt

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2.5Wiring Diagrams, Continued

Figure 2-7 UDC2300 Connections

COMMUNICATION MASTER

(A)	(RTN)	(B)
D+	SHLD	D–
		2

D+

13

14

D–

120 OHMS

			1
		1 Connect shield wires together with Honeywell
TO OTHER
COMMUNICATION			supplied crimp part number 30755381-001
		2 Do not run these lines in the same conduit as AC power.
CONTROLLERS

D– D+

120 OHMS ON LAST LEG	21758B.ppt

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Section 3 – Establishing Communications and Testing

3.1Preparing the Controller for Communications

Introduction

Synchronization

Configurable parameters

Each controller on the RS422/485 Communications link must be configured at the controller level for certain parameters before communications between the Host and the Controller can be accomplished.

Before you attempt to exchange messages between your computer and the controllers on the RS422/485 link, you must set up the controller for the same form of data transmission that the host computer’s RS422/485 interface uses. This is called Synchronization.

You must match the controller Baud Rate and Parity with that of your computer.

Table 3-1 is a list of parameters that should be configured, their definitions, range of settings or selections, the procedure for entering the information into the controller is found in Table 3-2.

Table 3-1 Communications Parameters

Parameter

Communications

State

Communications

Address

Shed

Shed Time

Duplex

TX Delay

Definition

Enables or disables the Communication function in the controller.

This is a number that is assigned to a controller (limited to 15 controllers) that will be used during communications. This number will be its address on the link (address 0-99).

If your controller has two loops, each loop must have its own individual address (i.e. Loop 1, #6; Loop 2, #7).

Term used to describe a point in time when the controller, which had been working as a slave, reverts to an independent, stand alone controller using its own inputs, configuration data and control mode. Shed will happen when a controller is in slave, the shed is not zero, and the communication stops.

The number selected will represent how many sample periods will elapse before the controller sheds from computer control. Each period equals 1/3 second. 0 = No shed.

Selection made for transmission type. Two-wire transmission is half duplex. Four-wire transmission is full duplex.

Configurable response delay timer allows you to force the UDC to delay its response for a time period of from 1 to 500 milliseconds. Compatible with the host system hardware/software.

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3.1Preparing the Controller for Communications, Continued

Parameters, continued

Table 3-1 Communications Parameters, Continued

Parameter

Shed Controller

Mode and Output

Level

Shed Setpoint

Recall

Parity

Baud Rate

Communication

Units

Communications

Setpoint Ratio

Communications

Setpoint Bias

Definition

This selection determines the mode of local control whenever the controller is SHED from the slave mode.

•Last Mode and Output – The controller will return to the same mode (Manual or Automatic) and Output level that it was in before shed.

•Manual Mode, Last Output – The controller will return to manual mode and the last output level it was in before shed.

•Manual Mode, Failsafe Output – The controller will return to manual mode at the output level selected at ID code 40 – Failsafe Output Value.

•Shed to Automatic Mode – The controller will return to automatic mode.

This selection determines what setpoint will be used if the controller is shed from the communications link.

•TO LSP – The controller will use the last local setpoint stored.

•TO CSP – The controller will store the last computer setpoint and use it at the Local Setpoint (LSP1, LSP2, or LSP3, whichever is in use).

Transmitting each ASCII character requires 8 bits:

•7 bits for the character code

•1 bit (the eighth) for Parity, which may represent either ODD or EVEN parity.

Thus, the controller can accommodate your computer's choice of parity (odd or even) and perform parity checks on your computer's data transmission. The controller will return STATUS CODE 04 if it detects incorrect parity.

This is the transmission speed in bits per second. In order to communicate properly, the controller must be set to the same Baud Rate as your computer. The Baud Rate selections are: 300, 600, 1200, 2400, 4800, 9600, or 19,200.

This selection determines how the controller values are expressed during communications:

Percent of span or Engineering units.

Ratio value for computer setpoint. The range is from -20.00 to +20.00.

Bias value for computer setpoint. The range is from -999 to 9999.

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