General Information, Configuration ID Tags | Honeywell UDC2500

Modbus RTU Function Codes

9 Modbus RTU Function Codes

9.1 Overview

This section describes the function codes needed to upload and download the configuration from a host computer into this instrument.

What's in this section?

The following topics are covered in this section.

	TOPIC	See Page
9.1	Overview	180

9.2	General Information	180

9.3	Function Code 20	182

9.4	Function Code 21	186

9.2 General Information

This instrument uses a subset of the standard Modbus RTU function codes to provide access to process-related information. Several MODICON function codes are implemented. It is appropriate to define instrument-specific "user-defined" function codes. Where differences occur between the two protocols it will be noted. Several standard Modbus RTU function codes are supported.

Configuration ID Tags

Function codes 20 and 21 use the RS422/485 tag IDs for accessing configuration and process-related data. These tags are fully explained in Section 10.

The tag IDs represent the register addresses used in the Request Message.

Other Modbus Codes

For Modbus codes other than for accessing configuration and process-related data for this controller, refer to the Modbus RTU Serial Communications User Manual # 51-55- 25-66.

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UDC2500 Universal Digital Controller Product Manual

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Honeywell UDC2500 manual General Information, Configuration ID Tags, Other Modbus Codes

Contents

UDC2500 Universal Digital Controller Product Manual WARRANTY/REMEDY Copyright 2007 by Honeywell Revision 5 April World Wide Web AbstractContacts Telephone Symbol Definitions Symbol Definition Contents Monitoring and Operating the Controller 136 177 151158 180 222 220221 226 Tables Introduction Introduction Figures Wiring Connections for Calibrating Current Output Page Function FeaturesOverview Easy to Read Displays Mount Anywhere UDC2500 Operator Interface all display items shown MAN Function of Displays and Keys1Function of Displays and Keys Process Instrument Explorer Software Overview CE Conformity Europe Depiction of infrared communications Introduction Introduction What’s in this section? Condensed Specifications Condensed SpecificationsPre-installation Information Alarm Outputs RTU Environmental and Operating Conditions Frequency Hz Model Number Interpretation Instructions Model Number Interpretation Alarm Relay Contact Information Control and Alarm Relay Contact InformationAlarm Relays Control Relays Physical Considerations Overall DimensionsMounting Step Action Mounting ProcedureMounting Method Wiring Permissible Wiring Bundling Bundle No Wire Functions Universal Output Functionality and Restrictions Wiring DiagramsIdentify Your Wiring Requirements INU Tpsc Wiring the Controller Composite Wiring Diagram Line Neutral Voltage L2/N Earth Ground HotAC/DC Input #1 RTD Time Simplex Input #2Volts Input Milliamps Input Solid State Relay Output 10 Open Collector Output 11 Dual Electromechanical Relay Option Output 12 Current Output Open CW 15 RS-422/485 Communications Option Connections 17 Auxiliary Output and Digital Inputs Option Connections 26 + 12 + Configuration Configuration Topics Set Up Group Function Prompts Configuration Prompt HierarchyConfiguration Prompt Hierarchy Configuration Procedure Configuration ProcedureProcedure Upper Display = SET Tuning Set Up Group Rate T Manrst MINRPM Gain I2 RPM ALL Configuration is CompleteI2 MIN Secur Automa DisableEnable RN HLD TI MIN SP Ramp Set Up GroupSP Ramp Sprate FinlspSetpoint Ramp Final Setpoint Euhrup Setpoint RAMP/SOAK Program EuhrdnSpprog Strseg Hold StateDIS Pvstrt Accutune Set Up Group Tune FuzzyFuzzy Overshoot Suppression Accutune Current Accutune Process 304 Accutune Error STATUS-When anAT ERR 401 Algorithm Set Up GroupCtralg Onof Proportional Gain-Regulates OuthysPida Derivative Rate-Regulates Pdmr PD with Manual Reset is usedManrst in the Tuning Set Up group Three Position Step Control Start TimerPeriod Incrmt ResetDisp 501 Output Set Up GroupOutalg With Control algorithm prompt Tpsc Current Duplex Range Algorithm CrangeOutrng Current Duplex Range Full English Numeric Code Current Duplex Range SPLIT-ThisFor Example Electromechanical RELAY-Cycle RLY TYP Relay Cycle Time IncrementMech MTR TI 601 Input 1 Actuation Type This Input 1 Set Up GroupIN1TYP IN1 HI XMITR1Transmitter Characterization Bias IN1 LORATIO1 FILTR1 Nofs DownDownscale Burnout will force Emiss 701 Input 2 Actuation Type This Input 2 Set Up GroupIN2TYP XMITR2 RATIO2 IN2 HIIN2 LO FILTR2 Pidset Control Set Up GroupNumber of Tuning Parameter 801 SW VAL TWO Sets PV AutomaticTWO Sets SP Automatic LSP’S SP TRK Power UP Controller ModeRspsrc PWR UP Action PwroutThree Position Control Step Failsf BandHyst Three Position Step Failsafe Minrpm Failsafe ModeFsmode Auxiliary Output Selection Options GroupAuxout No Auxiliary Output Auxiliary Output LOW Scaling Deviation Process Variable0PCT No Digital Input Selections Auxiliary Output High ScalingDIGIN1 Manual Failsafe OUTPUT-Controller External SP Program ResetInhibit Integral RESET-Contact Keyboard LOCKOUT-Contact closure To Remote SETPOINT-Contact closure Initiate Limit Cycle TUNING-ContactSetpoint INITIALIZATION-Contact Output Tracks Input 2-Contact Plus RUN Setpoint DI1COMDigital Input 1 Combination DIGIN2 Communications Selection Communications GroupComsta Irenab Wsflt Shed Controller Mode and OutputTxdly Sdenab Units ShdspShed Setpoint Recall Percent Alarms Set Up Group Thermocouple Warning Note Deviation from LSP 2 NoteTC W TC F A1S1VA High AlarmLOW Alarm A1S1HL END of Segment A1S1EVBeginning of Segment A1S2TY A2S2TY A2S1HLA2S1EV A2S2VA Diagal ALARM1Block 1201 Display Set Up GroupDecmal Decimal Point LOCATION-This Lwrdsp FreqDisply Lnguag 16 P.I.E. Tool Ethernet and Email Configuration Screens Ethernet Configuration Screen Email Configuration Screen Configuration Configuration Record Sheet Option AlarmsContrl COM Monitoring and Operating the Controller Whats in this section? Operator Interface Entering a Security Code Lockout levels Lockout FeatureProcedure to Enter a Security Code Key error Individual key lockout Monitoring Your Controller 4.5.1 Annunciators Annunciators Viewing the operating parameters Lower Display Key Parameter Prompts Diagnostic Messages Diagnostic Messages Functional Overview Block Diagram of the UDC2500 Controller Single Display Functionality Access the ValuesAuto-only Mode Exceptions Single Display Parameters Lower Display Prompt Upper Display Value Comments Upper Display = PV Value Start Up Procedure for OperationProcedure for Starting Up the Controller Control Modes Mode DefinitionsControl Mode Definitions Changing Control Modes Dual Display Only What happens when you change modesSetpoints Step Operation Press Result Select Until you see 10 Procedure for Switching Between Setpoints TimerSwitching between setpoints Configuration check Viewing Times Operation Tuning indicators Accutune Tune for Duplex Heat/Cool 11 Procedure for Starting TuneTune for Simplex Outputs Configuration Check for Duplex Using Automatic Tune at start-up for Duplex Heat/CoolUsing Blended Tune at start-up for Duplex Heat/Cool Using Manual Tune at start-up for Duplex Heat/Cool 108 17 Accutune Error Codes Error Codes16 Procedure for Accessing Accutune Error Codes Aborting Accutune Fuzzy Overshoot Suppression Using Two Sets of Tuning ConstantsConfiguration Completing Accutune Upper Display = the switchover value Set up Procedure18 Set Up Procedure Upper Display = SET Lower Display = Contrl Upper Display = the PV value Lower Display = Pids X X= 1 or Alarm SetpointsUpper Display = SET Lower Display = Alarms Display Three Position Step Control AlgorithmEstimated Motor Position Upper Display = PV = motor goes to closed position Upper Display = rangeExcept 3 Position Step 100 = motor goes to open position Setpoint Rate/Ramp/Program Overview Setting Failsafe ModeSet Failsafe Mode 23 Procedure for Setting a Failsafe Mode PV Hot Start 24 Running a Setpoint Ramp 19Setpoint RampRUN/HOLD key 20Setpoint Rate Power OutagePower outages 25 Program Contents Review program data and configurationProgram Contents Setpoint Ramp/Soak Programming Contents Definition Ramp unit Ramp/soak profile example To Begin SEGRP Unit Program record sheet Soak Time Ramp Time Soak SP 26 Run/Monitor Functions Run/Monitor the programRun/Monitor functions Function Press Result Lower Display = Recxx Power outage Digital input remote switch operationLower Display = XXHH.MM 22 P.I.E. Tool Maintenance Screens Loop Data Loop Data Maintenance Screen Loop Data Alarm Details Alarm Details Maintenance Screen Loop Data Digital Input Details Digital Input Details Screen Status Data Maintenance Screen Status Data 10 Ethernet Status Maintenance Screen Ethernet Status Configuring your Ethernet Connection Configuring the Controller via Infrared Communications 12 Online Configuration Configuring the Controller via Ethernet Communications 14 Ethernet Communications Type Selection 15 Ethernet Communications Address 16 Configuration Upload in Progress Input Calibration Select the Range Values Minimum and Maximum Range ValuesCalibration Steps W5W26 low Sensor Type PV Input Range Range Values 100 %W5W26 RP20-RP40 Voltage and Milliamp Equivalents for Input 2 Range Values Disconnect the Field WiringPreliminary Information Input 1 Set Up Wiring Thermocouple Inputs Using an Ice Bath 25R Thermocouple Inputs Using a Thermocouple SourceSet Up Wiring Procedure for RTD Inputs 26+ Millivolt or Volt Source 26+ To 10 Volts Set Up Wiring Procedure for 0 to 10 VoltsSet Up Wiring Procedure for Milliampere Inputs Volt Source 100K pair 26+ Preliminary Steps Input 1 Calibration Procedure10 Input 1 Calibration Procedure Numeric Code Lower Display = Cjtemp Upper Display = Aply Lower Display = IN1SPNIf … Then … 25+ Input 2 Set Up WiringTo 20 mA or 4 to 20 mA Inputs Input No connection No connection 26 + Input 2 Calibration ProcedureTo 2 Volts, 0 to 5 Volts, or 1 to 5 Volt Inputs Input 13 Input 2 Calibration Procedure Numeric Code Restore Input Factory Calibration 14 Restore Factory Calibration 150 Output Calibration Calibrator Connections Set Up Wiring Procedure for Current OutputCurrent Output Calibration 19+ Calibrate 100 % Current Output Calibration Procedure Numeric CodeCalibrate 0 % Auxiliary Output Calibration Set Up Wiring Procedure for Auxiliary OutputSet Lock in the Tuning Set Up group to None Lower Display = Auxout Auxiliary Output Calibration Procedure Numeric CodeCalibration Mode Upper Display = a Value Upper Display = SET Lower Display = Tuning Restore Output Factory Calibration ProcedureRestore Factory Calibration Procedure Output Calibration Step Operation Press Result Troubleshooting/Service Troubleshooting Aids Determining the software version Procedure for Identifying the Software VersionCustomer support 32xx Power-up Tests Status Tests Background Tests Lower Reason for Failure How to Correct the Problem DisplayBackground Tests Fail Segerr CnferrPV LIM OUT1FL Other symptoms Controller Failure SymptomsSymptoms Display Output Cause Shooting Procedure Troubleshooting Procedures Procedure #2 Procedure #1Troubleshooting Power Failure Symptoms Troubleshooting Current Output Failure Refer to Installation for details Procedure #3Troubleshooting Three Position Step Control Output Failure Refer to Section Procedure #4 Troubleshooting Time Proportional Output Failure Procedure #5 Refer to Output Calibration for details Refer to Configuration for Procedure #610 Troubleshooting Alarm Relay Output Failure Refer to Installation for relay contact information Procedure #7 11 Troubleshooting a Keyboard Failure Procedure #8 12 Troubleshooting a RS-485 Communications Failure Procedure #10 Procedure #913 Troubleshooting an Ethernet Communications Failure 14 Troubleshooting Auxiliary Output Failure Step What to do Restoring Factory Configuration15 Restoring Factory Configuration Software Upgrades 16 Software Upgrades 176 Exploded View UDC2500 Exploded View Parts Not Shown Software Upgrades see SectionParts Identification Key Part Number Description Removing the chassis Other Modbus Codes Configuration ID TagsGeneral Information Floating Point Parameter Type Register Name Access Numbers DecRegister Address Structure Integer Parameter Type Register Count Request and Response Formats Function Code 20 14h Read Configuration Reference DataDescription Byte Count Register Address Reference Type DefinitionsFile Number Register Address Format for Function Code Read Configuration Examples Example #1 Example #2 Function Code 21 15h Write Configuration Reference Data Write Restrictions Register Format Addresses Dec Hex Unrestricted RegistersRestrictions on Parameter Numbers in One Message Write Configuration Examples General Information Non-volatile Memory Retention Reading Control Data Register Addresses Read Read Software Options StatusControl Data Parameters Option Status Miscellaneous Read Onlys Miscellaneous Read Onlys Register Addresses for Read OnlysSetPoint Program Read Only Information SetPoint Program Read Only Information Setpoint Associated Parameters Setpoint Code SelectionsAssociated Parameters Computer Setpoint Selection Using a Computer Setpoint Overriding Controller Setpoint1 Shed Timer Reset Shed Computer Setpoint Associated Parameters Set-up Group Tuning Configuration ParametersTuning Reading or Writing Lockout 0084 132 SP Ramp/Rate/Program 10 Set-up Group Setpoint Ramp/Rate Controller Status 00B4 180 200 11 Set-up Group Accutune Algorithm 12 Set-up Group Algorithm Output Algorithms 13 Set-up Group Output Input 14 Set-up Group Input = NNM H Burnout Open 00A4 164 15 Set-up Group Input Input 00AB 171 Control 16 Set-up Group Control = RPM Options 17 Set-up Group Options SP=PV Communications 18 Set-up Group Communications Alarms 19 Set-up Group Alarms Alarm 1 Setpoint 008E 142 INT Display 20 Set-up Group Display Modbus RTU Exception Codes Function Code Field 21 Modbus RTU Data Layer Status Exception Codes QueryResponse Exception Definition Description Code Ethernet TCP/IP Further information Index UDC2500 Universal Digital Controller Product Manual 223 224 UDC2500 Universal Digital Controller Product Manual 225 Sales and Service UDC2500 Universal Digital Controller Product Manual 227 228