Teledyne 2103c Configurations, Configuration Example Direct Connection Shown

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2103 Modem Module Section 4 Modbus Protocol

4.3 Configurations

A variety of configurations can be made with Modbus, either through direct connection or through a modem.

In the example shown in Figure 4-1,you are direct-connecting a server PC to two individual 2150s through Modbus, using the COM ports on the OPC Server, which are directly connected to the remote 2150s.

Connection to the module is made through the RS-232 communi- cation port on the top of the module.

Note

For low power operation, we recommend connecting the mod- ule(s) to the computer using the straight-through cable (Isco part number 60-5314-529), which consumes less power, instead of our standard interrogation cable.

In Figure 4-1,the OPC Server PC must have two COM ports. Modbus requires one COM port each, for direct connection of each 2150.

2150

2150

COM

port 1

COM

port 2

OPCProcess

ServerControl

Figure 4-1 Configuration Example (Direct Connection Shown)

The operation sequence for the example above can be summa- rized in the following steps:

2150:

1.2150s take readings from probes.

2.2150s store readings (level, velocity, flow rate, etc.) in their specified registers.

Process Control:

3.The user requests data through Process Control.

4.Process Control asks the OPC server to gather informa- tion.

4-3

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Contents 2103/2103c Modem Module Page Foreword Page Modem Module Table of ContentsAppendix B Accessories Appendix a Replacement PartsAppendix C Material Safety Data Sheets List of FiguresIntroduction Product Description Introduction2103 Modem Module Components Top View Identifying Module Components2103 Modem Module Components Bottom View 2103 Modem Module Technical Specifications 2103 Communication Connector Pins Only 2103 Modem Cable Connector Safety Symbols and Hazard AlertsTechnical Service Modem Module Introduction Unpacking Instructions Installation and OperationSafety Modem Module Installation and Operation Installation2103 Modem is in compliance with FCC part 68 rules. However Telephone Line Connection 2103 onlyService is subject to state tariffs Modem Cable Flowlink Connect Screen Connecting to FlowlinkPushed Data Capability Modem Module Installation and Operation Antenna Options 2103c Cellular Modem ModuleOverview Modem Module 2103c Cellular Modem Module ProgrammingSetting dialout phone numbers and alarm conditions TAP Service Parameters Operation Modbus ProtocolEstablishing Configuration Example Direct Connection Shown ConfigurationsGlossary of Terms Common Acronyms Modbus Ascii Address 1 Register Definitions Modbus Ascii Address 2-N+1 Register Definitions 117 Volume 1 status code Bit integer Read Measurement Parameters by Model Number Modem Module Modbus Protocol Maintenance Kit MaintenanceMaintenance Overview Desiccant DesiccantHydrophobic Filter Rings Modem Module Maintenance Replacement Parts Appendix a Replacement Parts1 2103 Replacement Parts Modem Module Appendix a Replacement Parts Modem Module Appendix a Replacement Parts 2 2103c Replacement Parts Modem Module Appendix a Replacement Parts Modem Module Appendix a Replacement Parts Modem Module Appendix a Replacement Parts Modem Module Appendix a Replacement Parts Modem Module Appendix a Replacement Parts Modem Module Appendix a Replacement Parts Modem Module Appendix a Replacement Parts How to Order General Accessories Appendix B AccessoriesModem Module Appendix B Accessories Appendix C Material Safety Data Sheets Material Safety Data Sheet Health Hazard Data Material Safety Data Sheet First Aid Measures Exposure Controls/Personal Protection Toxicological Information Other Information Declaration of Conformity Page Control and Laboratory use Page Teledyne Isco One Year Limited Factory Service Warranty