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Energizer 2103, 2103c, 2103G Establishing, Communication, Module Addressing

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2103 Modem Module
Section 5	Modbus Protocol

		By accessing these registers you can obtain the current value of
		whatever parameter you desire. The reading(s) can then be dis-
		played or stored wherever you designate as a destination; for
		example, a process control computer.

		Note
		Level, flow, velocity, and temperature data is stored in metric
		units only.
		Not all registers are limited to read-only data storage. You can
		also use some registers for control purposes. For example, by
		writing a “1” value to register 24 (“Identify Module” register), you
		will tell a 2100 module to light the LED on the front of the
		module.
5.2.1	Establishing	There are several different communications protocols supported
	Communication	in the 2100 series that require auto-baud rate detection. Because
		of this, each time a modbus connection is made, the module uses
		a polling mechanism to repeatedly send a command until a

response is received. It may take up to 20 command retries before the module has identified the baud rate and a response is received.

5.2.2Module Addressing When connecting to a site via a Modbus OPC server, you use a dedicated line of communication to that module or stack from the OPC server, which can be a dedicated communications cable (direct connection) or a dedicated phone number (modem).

When you are using a direct connection, you are dedicating a specified COM port on the computer, and that COM port determines the site to which you are connecting.

When you are using a modem, the dedicated line is defined by the site's phone number.

If you connect more than one 2100 Series module at a site, the Modbus OPC server, while using the shared communication line for all of the modules within the network, must have some way to differentiate between the modules. When sending a command to a specific module, the command has an address field. This allows the server software to talk to, as well as control, the specified module, while ignoring other modules in the same stack or site.

Each module capable of Modbus Protocol communication will automatically create its own specific ASCII address within the site, using:

•The model numbers of the modules

•The user-defined module names

5-2

Contents

Installation and Operation Guide Page Foreword Page Table of Contents Section 1 Introduction Section 2 Installation and Operation Section 3 2103C Cellular Modem Module Section 4 2103G Cellular Modem Module List of Figures List of Tables Page Section 1 Introduction 1.1 Introduction 1.2 Product Description 1.3Identifying Module Components Page Table 1-32103 Modem Module Technical Specifications Table 1-4Specifications – 2191 Battery Module Table 1-52103 Communication Connector Pins (2103 only) 1.4Safety Symbols and Hazard Alerts 1.5 Technical Service Page Section 2 Installation and Operation 2.1Unpacking Instructions 2.2Safety 2.3 Installation Page Page Page Page Page Page Page Page Section 3 2103C Cellular Modem Module 3.1 Overview 3.2 Antenna Options Page Page 3.3Connecting to Flowlink Page Section 4 2103G Cellular Modem Module 4.1 Overview 4.2 SIM Card Page 4.3 Antenna Options Page Page 4.4Connecting to Flowlink 4.5Setting Up The Access Point Name Page Section 5 Modbus Protocol 5.1 Introduction Establishing Module Addressing 5.3 Configurations 5.4 Glossary of Terms 5.5 Common Acronyms Register Specifications Table 5-1Modbus ASCII Address 1 Register Definitions Table 5-2Modbus ASCII Address 2-(N+1)Register Definitions Table 5-2Modbus ASCII Address 2-(N+1)Register Definitions (Continued) Table 5-3Measurement Parameters by Model Number Page Section 6 Maintenance 6.1Maintenance Overview 6.3 Desiccant 6.4 Hydrophobic Filter 6.5 O-Rings How to Obtain Service Page Appendix A Replacement Parts A.1 Replacement Parts Page Page Page Page Page Page Page Page Page Page Page Appendix B Accessories B.1 How to Order B.2 General Accessories Page Appendix C Material Safety Data Sheets C.1 Overview Material Safety Data Sheet Section 1 - Material Identification and Information Section 2 - Physical/Chemical Characteristics Section 3 - Fire and Explosion Hazard Data Section 4 - Reactivity Hazard Data Section 5 - Health Hazard Data Section 6 - Control and Protective Measures Section 7 - Precautions for Safe Handling and Use/Leak Procedures MATERIAL SAFETY DATA SHEET Section 1 – Product and Company Information Section 2 – Composition / Information on Ingredients Section 3 – Hazard Identification Section 4 – First Aid Measures Section 5 – Fire Fighting Measures Section 6 – Accidental Release Measures Section 7 – Handling and Storage Section 8 – Exposure Controls/Personal Protection Section 9 – Physical and Chemical Properties Section 10 – Stability and Reactivity Section 11 – Toxicological Information Section 12 – Ecological Information Section 13 – Disposal Information Section 14 – Transportation Information Section 15 – Regulatory Information Section 16 – Other Information Page Page Standard Description Performance Criteria Severity Applied USA Representative Page Page Page Standard Description Severity Applied William Foster USA Representative Page Teledyne Isco One Year Limited Factory Service Warranty Return Authorization Shipping Address: Mailing address: