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Teledyne 7500 User Manual

Teledyne 7500
42 pages
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TELEDYNE ANALYTICAL INSTRUMENTS
Instruction Manual
INFRARED GAS
ANALYZER
COMMUNICATION
FUNCTIONS (MODBUS)
TYPE: 7500 / 7600
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Teledyne 7500 Specifications

General IconGeneral
BrandTeledyne
Model7500
CategoryAnalytical Instruments
LanguageEnglish

Summary

1. Communication Functions

2. Specifications

3. Connection

3.1 Terminal Allocation

Pinout and signal names for the CN2 communication connector.

3.2 Connection Procedure

Instructions for connecting the instrument using an RS-232 reverse cable.

4. Communication Settings

4.1 Parameter Setup Items

Lists parameters like transmission speed, data length, stop bits, and station number.

4.2 Setting Operation Guide

Guides setting the station number via the analyzer's maintenance mode.

5. Modbus Protocol

5.2 Message Structure

Details Modbus message components: Station No., Function Code, Data, CRC.

5.4 Slave Station Response

Describes slave station responses to commands and error code definitions.

5.5 Function Code Mapping

Details Modbus function codes and their correspondence to register addresses.

5.6 CRC-16 Calculation Method

Step-by-step guide for calculating the CRC-16 error check code.

5.7 Transmission Timing

Outlines timing requirements for master and slave communication.

6. Message Data Details

7. Address Map & Data Format

7.1.1 Decimal Point & Unit Handling

How to calculate exact values using decimal point and unit data.

7.2 Register Address Map

Register address map for user settings like calibration parameters.

7.2.1 User Settings: Calibration & Alarms

Lists user settings for auto calibration, alarm settings, and range switches.

9. Troubleshooting Communication

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