Sierra SmartTrak 100 Series Instruction Manual
Modbus, mass flow meters & controllers
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Summary of Contents for Sierra SmartTrak 100 Series
- Page 1 SmartTrak ® Modbus Instruction Manual Modbus Device Specification for SmartTrak ® Models: 100, 101, and 140 Mass Flow Meters & Controllers Part Number: IM-100ModbusRev.V1 May 2013...
- Page 2 IMPORTANT CUSTOMER NOTICE: OXYGEN SERVICE Sierra Instruments, Inc. is not liable for any damage or personal injury, whatsoever, resulting from the use of Sierra Instruments standard mass flow meters or controllers for oxygen gas. You are responsible for determining if this mass flow meter or controller is appropriate for your oxygen application.
- Page 3 Warnings and Cautions Note and Safety Information We use caution and warning statements throughout this book to draw your attention to important information. Warning! Caution! / Note! This statement appears with information that This statement appears with information that is is important to protect people and equipment important for protecting your equipment and from damage.
- Page 4 If the problem persists after following the troubleshooting procedures outlined in the SmartTrak 100 Series manual, contact Sierra Instruments by fax or by E-mail (see inside front cover). For urgent phone support you may call (800) 866-0200 or (831) 373-0200 between 8:00 a.m.
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Page 5: Table Of Contents
Table of Contents Table of Contents ............................5 Chapter 1: Introduction ..........................7 Chapter 2: Electrical Connections ........................ 8 RS-485 Connection ........................... 10 General 2-Wire Topology RS-485 Network ....................10 Daisy Chain Units ........................... 10 Cable................................. 10 Terminator ..............................10 Line Polarization ............................ - Page 6 Quit ................................24 Trouble Shooting ............................24...
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Page 7: Chapter 1: Introduction
Chapter 1: Introduction The SmartTrak 100 Modbus™ add-on module for Sierra Instruments’ SmartTrak Series 100, 101, and 140 gas flow measurement and control instruments. A variety of features enable the integration of the SmartTrak into a Modbus network environment. Among these features: ... -
Page 8: Chapter 2: Electrical Connections
Chapter 2: Electrical Connections All electrical connections are made on the left side of the SmartTrak 100 Modbus. The 15 Pin “P1” connector is used for instrument power and analog signals. See SmartTrak 100 Manual. The D9 “COM” connector is used for the Modbus-RTU RS-485, and hard wired addressing. Warning! Never connect a remote pilot module to the instrument when a SmartTrak 100 ... - Page 9 Chassis (Earth) Ground Note! The pin out for P1 can be found in the SmartTrak 100 Series instruction manual. Pins 1, 3, and 10 are connected together inside the instrument. Do not tie these grounds together outside the instrument. Must have one connection per analog ground.
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Page 10: Rs-485 Connection
RS-485 Connection Caution! The SmartTrak 100 Modbus is equipped with an optical isolated RS-485 interface. Don’t connect the RS-485 shield to the ground of the power supply unless the isolated barrier isn’t required. General 2-Wire Topology RS-485 Network Figure 2 General 2-Wire Topology RS-485 Network The “RS-485 –... -
Page 11: Line Polarization
Line Polarization In noise environments it may be necessary to polarize the lines to ensure that the receivers stay in a constant state when no signal is present. The polarization must be implemented at one location for the whole bus. The value for the pull up and pull down resistors is between 450 and 650 ohms * (a higher value permits more devices to be connected to the bus). -
Page 12: Chapter 3: Communicating
Chapter 3: Communicating Once the SmartTrak 100 Modbus is wired to the network and powered up it is time to communicate with it. The default settings for the Modbus interface are as following: ID code = 1-247 (or 1 – 15 depending on the COM 1 ID pin settings) ... -
Page 13: Modbus Registers Overview
Modbus Registers Overview Register Description Read/Write Data type No. registers Address Dynamic Data 40001 Actual flow - low 32 bits real word 40002 Actual flow - high word 40003 Set point - low word 32 bits real 40004 Set point - high word 40005 Totalizer3,4 R/W (Reset) -
Page 14: Special-Modbus Set Up
Gas 1 – char 1,2 40052 16 bits ASCII Gas 1 – char 15,16 40059 Gas 2 – char 1,2 40060 16 bits ASCII Gas 2 – char 15,16 40067 Gas 3 – char 1,2 40068 16 bits ASCII Gas 3 – char 15,16 40075 Gas 4 –... -
Page 15: Registers Explained
register and write it back. This will reset the unit Registers Explained The registers are divided into four groups. The first group (40001 – 40014) represents the dynamic data. This group changes the most. The second group (40015 – 40039) contains the settings from the instrument and SmartTrak 100 Modbus specific settings. -
Page 16: Gas Index
40034: Gas index Value shows which gas is selected on the instrument. Value can range between 1 and 10. This specific index can be customizing when ordering. The default list is: Value Argon (Ar) Carbon Dioxide Carbon Monoxide (CO) Methane (CH Helium (He) Hydrogen (H Oxygen (O... -
Page 17: Password
Kg/m Kg/h Lb/s Lb/m Lb/h 40037: Password Current password in the instrument. This password doesn’t affect the SmartTrak 100 Modbus™. 40038: Input Set Point Index Value indicates the source for the set point. The table shows the available values: Value Source Digital (Modbus in this case) 0 –... -
Page 18: Gas Name 1
40052 – 40059: Gas Name 1 40060 – 40067: Gas Name 2 40068 – 40075: Gas Name 3 40076 – 40083: Gas Name 4 40084 – 40091: Gas Name 5 40092 – 40099: Gas Name 6 40100 – 40107: Gas Name 7 40108 –... -
Page 19: Parity
44102: Parity Value Parity None Even 44103: TX delay The value in this register will tell the SmartTrak 100 Modbus to wait a number of milliseconds before starting to transmit the reply to the master. Delay time = value x 1ms 44104: Reset unit Writing back the value read from this register will trigger two events: 1. -
Page 20: Chapter 4: Bootloader
Chapter 4: Bootloader Introduction This chapter describes how the boot loader is used. The boot loader makes it possible to set up applications and download firmware using a simple terminal program and a serial connection. Getting Started In order to use the Bootloader, a PC is needed which is equipped with an RS-485 interface or an external converter connected to the RS-232 port. -
Page 21: Load Firmware (Not Typically Required)
The version of the boot loader is shown and three options. By pressing the “1”, “2” or “3” key an option is selected. Load Firmware (not typically required) Press “1” to download new firmware to the unit. The following screen will be presented: A question is presented asking to continue. - Page 22 A new screen will be presented asking for the file to be transferred: Use the “Browse” button to select the file to download. Only files with the “.hex” extension can be downloaded to the unit. Also make sure that the “Xmodem” protocol is selected. When the file is selected, press the “Send”...
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Page 23: Setup Firmware
Setup Firmware This option is used to set up the firmware in the unit. When pressing the “2” key the following screen will be presented: The version of the firmware will be shown followed by the first option which can be set. It will show the current selected value as well which values can be entered. - Page 24 Quit This option will quit the boot loader and will start the application. Trouble Shooting Problem Solution During the firmware transfer the download Reset the unit and try again. Make sure that has halted and nothing is happening anymore only .hex files intended for the unit are (or an error message appears) selected When trying the enter data the length is...
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