Related Manuals for ABB C100
Summary of Contents for ABB C100
- Page 1 User Guide – Control Modbus Serial Data DIN Process Indicators Communications Option and Controllers IM/C100–MOD_5 C100, C150, C160 and V100...
- Page 2 Electrical Safety This instrument complies with the requirements of CEI/IEC 61010-1:1993 "Safety requirements for electrical equipment for measurement, control, and laboratory use". If the instrument is used in a manner NOT specified by the Company, the protection provided by the instrument may be impaired. Symbols One or more of the following symbols may appear on the instrument labelling: Warning –...
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Page 3: Table Of Contents
CONTENTS INTRODUCTION ................... 2 ELECTRICAL INSTALLATION ..............2 2.1 Host Computer Serial Communications ..........2 2.2 Two-wire and Four-wire Connection ............ 2 2.3 Pull-up and Pull-down Resistors ............5 2.4 Termination Resistor ................5 2.5 Serial Connections ................5 CONFIGURATION ..................6 3.1 Accessing the Configuration Mode ............ -
Page 4: Introduction
1 INTRODUCTION This Operating Guide describes the COMMANDER 100, 150, 160 and V100 MODBUS serial data communications option and must be used in conjunction with the standard User Guide (part no. IM/C100, IM/C150, IM/C160 or IM/V100) supplied with the instrument. Information. - Page 5 2 ELECTRICAL INSTALLATION… …2.2 Two-wire and Four-wire Connection C100/V100 C150 Host Computer 1.8kΩ Pull-up Tx– Resistor Tx+/Rx+ Rx– Tx–/Rx– 1.8kΩ Pull-down Resistor Fig. 2.1a Two-wire Operation – Panel Mounted Instruments Host Computer 11 12 13 1.8kΩ Pull-up Tx– Resistor Tx+/Rx+ Rx–...
- Page 6 …2 ELECTRICAL INSTALLATION …2.2 Two-wire and Four-wire Connection C100/V100 Host Computer C150 1.8kΩ Pull-up Resistor 1.8kΩ Pull-down Tx– Resistor 1.8kΩ Pull-up Rx– Resistor 1.8kΩ Pull-down Resistor Fig. 2.2a Four-wire Operation – Panel Mounted Instruments Host Computer 9 10 11 12 13 1.8kΩ...
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Page 7: Pull-Up And Pull-Down Resistors
2 ELECTRICAL INSTALLATION… 2.3 Pull-up and Pull-down Resistors – Fig. 2.1 and 2.2 To prevent false triggering of slaves when the master (host computer) is inactive, pull-up and pull-down resistors must be fitted to the RS422/485 interface in the host computer –... -
Page 8: Configuration
MODBUS link must be assigned a unique address in the range 1 to 99. Addr See Section 4.4 of the relevant User Guide (MODBUS Address Frame, S – Serial Communication Configuration T – Serial Communications Parity C100/V100 C150/160 C100/V100 C150/160 PrSt... -
Page 9: Modbus Protocol
4 MODBUS PROTOCOL Information. • The COMMANDER 100, 150, 160 and V100 operate as MODBUS, Remote Terminal Unit (RTU) slaves. • Parity checking – detects transmission errors in individual characters. • Cyclic redundancy checking – detects errors in the master messages and slave responses. -
Page 10: Modbus Function Codes
…4 MODBUS PROTOCOL 4.2 MODBUS Function Codes The function code instructs the addressed slave which function to perform. Table 4.1 shows the function codes, and describes the action they initiate. Function Function Description Code Title Read Read up to 16 consecutive discrete (Boolean) points Coil Status from a specific starting point. -
Page 11: Modbus Functions
5 MODBUS FUNCTIONS This section shows typical examples of MODBUS function codes 01, 03, 05, 06, 08 and 16. Not all addressable parameters used in the examples which follow are valid for all instrument types – see Sections 7.1 to 7.4. 5.1 Read Coil Status –... -
Page 12: Read Holding Register - Function Code 03
…5 MODBUS FUNCTIONS 5.2 Read Holding Register – Function Code 03 5.2.1 Read Holding Register Query The Read Holding Register Query obtains the contents of up to eight holding registers in the addressed slave. Note. The data start register must contain the offset address of the first register to be accessed, e.g. -
Page 13: Force Single Coil - Function Code 05
5 MODBUS FUNCTIONS… 5.3 Force Single Coil – Function Code 05 5.3.1 Force Single Coil Query This message forces a single coil either ON or OFF. The data value 65,280 (FF00 HEX) sets the coil ON and the value zero turns it OFF. All other values are illegal and have no effect on coil status. -
Page 14: Preset Single Register - Function Code 06
…5 MODBUS FUNCTIONS Preset Single Register – Function Code 06 5.4.1 Preset Single Register Query The Preset Single Register Query modifies the contents of a holding register. Note. Function codes 05, 06 and 16 are the only messages that are recognized as valid for broadcast. -
Page 15: Loopback Test - Function Code 08
5 MODBUS FUNCTIONS… Loopback Test – Function Code 08 5.5.1 Loopback Test Query The Loopback Test Query tests the MODBUS system and does not affect the operation of the slave. Variations in the response may indicate faults in the MODBUS system. The information field contains two bytes for the designation of the diagnostic code followed by two bytes to designate the action to be taken. -
Page 16: Write Multiple Registers - Function Code 16
…5 MODBUS FUNCTIONS Write Multiple Registers – Function Code 16 5.6.1 Write Multiple Registers Query This message is used to change the contents of up to eight holding registers at a time. When used with slave address zero (broadcast mode) all slave controllers load the selected registers with the contents specified. -
Page 17: Exception Responses
6 EXCEPTION RESPONSES The exception response codes sent by the slave are shown in Table 6.1. When a slave detects one of these errors, it sends a response message to the master consisting of slave address, function code, error code and error check fields. Exception Exception Response Exception Response... -
Page 18: Addressable Parameters
7 ADDRESSABLE PARAMETERS 7.1 COMMANDER 100/V100 – Coils Coil No. Variable Label Read/Write Limits/Values Process Variable Fail State 1 = Failed Remote Set Point Fail State 1 = Failed A/D Converter Fail State 1 = Failed Alarm State 1 1 = Active Alarm Indicator 1 1 = On Alarm State 2... -
Page 19: Control Settings
0 = Auto; 1 = Manual These registers can only be written to when the controller is in Manual Mode. Control outputs 1 and 2 are only applicable to C100 instruments. ** V100 Instruments only *** Control Mode 1 only... -
Page 20: Set Points
…7 ADDRESSABLE PARAMETERS …7.2 COMMANDER 100/V100 – Registers 7.2.3 Set Points Register Variable Label Read/Write Limits/Values Set Point High –999 to 9999 Set Point Low –999 to 9999 Local Set Point –999 to 9999 Remote Set Point Input –999 to 9999 Fixed Set Point 1 –999 to 9999 Fixed Set Point 2... -
Page 21: Commander 150/160 - Coils
7 ADDRESSABLE PARAMETERS… COMMANDER 150/160 – Coils Coil No. Variable Label Read/Write Limits/Values Process Variable Fail State 1 = Failed A/D Converter Fail State 1 = Failed Alarm State 1 1 = Active Alarm Indicator 1 1 = On Alarm State 2 1 = Active Alarm Indicator 2 1 = On... -
Page 22: Totalizer Settings
…7 ADDRESSABLE PARAMETERS …7.4 COMMANDER 150/160 – Registers 7.4.3 Totalizer Settings Register Variable Label Read/Write Limits/Values 75 + 76 Predetermined Value 0 to 999999 77 +78 Preset Value 0 to 999999 79 + 80 Batch Total 0 to 999999 81 + 82 Secure Total 0 to 999999 Total Go State... - Page 23 We provide a comprehensive after sales service via a Worldwide Service Organization. Contact one of the following offices for details on your nearest Service and Repair Centre. United Kingdom ABB Limited Tel: +44 (0)1480 475 321 Fax: +44 (0)1480 217 948 United States of America ABB Inc.
- Page 24 Acknowledgements Modbus is a registered trademark of Modicon IBM is a trademark of International Business Machines Corp. ABB has Sales & Customer Support expertise The Company’s policy is one of continuous product in over 100 countries worldwide improvement and the right is reserved to modify the information contained herein without notice.