Leviton ModHopper Installation And Operation Manual
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Leviton ModHopper Installation And Operation Manual

Wireless modbus/pulse transceiver
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ModHopper
- Wireless Modbus/Pulse Transceiver
®
Cat. No. R9120
Installation and Operation Manual
DI-007-R9120-00A

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Summary of Contents for Leviton ModHopper

  • Page 1 ModHopper - Wireless Modbus/Pulse Transceiver ® Cat. No. R9120 Installation and Operation Manual DI-007-R9120-00A...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1 Product Application Limitation ................4 2 Features and Specifications ................5 3 Overview and Installation Checklist ..............6 3.1 Overview ......................6 3.2 Installation Checklist ..................6 3.3 Model Information ....................6 4 Hardware Installation ....................7 5 Configuration ......................8 6 Modbus Registers ....................13 6.1 Supported Modbus Functions ................13 6.2 Modbus Register List ..................13 7 Mechanical Drawings ..................16...

  • Page 4: Product Application Limitation

    1 PRODUCT APPLICATION LIMITATION • Leviton products are not intended for use in critical applications such as nuclear facilities, human implantable devices or life support. Leviton is not liable, in whole or in part, for any claims or damages arising from such uses.

  • Page 5: Features And Specifications

    2 FEATURES AND SPECIFICATIONS The ModHopper wireless Modbus/pulse transceiver is designed to allow systems integrators the ability to communicate with remote locations while avoiding the costs associated with running low voltage wiring to multiple locations in a single or between multiple buildings. To meet these requirements, the ModHopper provides the installer with all the tools necessary to install and configure the hardware and software with a minimum of time and investment.

  • Page 6: Overview And Installation Checklist

    3 OVERVIEW AND INSTALLATION CHECKLIST 3.1 Installation Checklist A ModHopper system installation has the following components: Required hardware • Two or more ModHopper R9120 transceivers. External Hardware • RS485 Modbus master system such as an A8812 EMH™ or a Modbus compatible PLC.

  • Page 7: Hardware Installation

    RS485 RX: The RX led should blink whenever a modbus query is sent on the RS485 loop. (regardless of the target address of the query). If the ModHopper is attached to an EMH, the RX led should blink about once per second.

  • Page 8: Configuration

    485 Termination Enable: Set the “485 Term En” to ON to enable a 120 ohm termination resistor on the RS485 network. This should be used when the ModHopper is on the end of a 485 wiring run. Set this switch to OFF when the ModHopper is in the middle of an RS485 wiring run.
  • Page 9 When configuring a Modbus Master such as a PLC, TCP Gateway, or computer software, you must increase the timeout on the RS485 port of your system. The ModHopper adds about 500mS of delay per hop. In a complex system with multiple ModHoppers, a 1 to 2 second round trip time is not uncommon.
  • Page 10 5 CONFIGURATION 5.6 EMH Data Display Page When using the ModHopper with the EMH data acquisition server, the EMH will read the pulse input data from the ModHopper and provide configuration menus for all of the ModHopper options. The EMH will display will report all the data values present on the ModHopper. In addition, the instantaneous min/max rate values will be cleared after each logging interval.
  • Page 11 Serial port timeout, and protocol configuration. When a request comes in over the wireless mesh network and is sent out on the ModHopper RS485 serial port, the ModHopper must wait for the attached Modbus device to reply to the query. The timeout option controls how long the ModHopper will wait before giving up on the attached Modbus device and discarding the query.
  • Page 12 The graph will draw a blue box for each ModHopper that is attached to the system. The blue number inside the box icon is the Modbus address of the ModHopper. To the side of each icon, three lines of information will be shown.

  • Page 13: Modbus Registers

    In addition the device will respond to with Modbus exceptions for invalid function, value, and register if out of bound requests are made. Modbus function 0x11 Slave ID function will respond with ID=49 and one of the following ID text values: “Leviton, ModHopper, R9120-5” 6.2 Modbus Register List All modbus registers are read-only unless otherwise noted.
  • Page 14 6 MODBUS REGISTERS...
  • Page 15 6 MODBUS REGISTERS 6.3 Register Functions Pulse Count: The pulse count is stored as an unsigned 32bit integer. This allows for 2^32 pulses (4.2 billion) to be counted before rollover. On Modbus systems that do not allow you to read 32 bit values, you can calculate the pulse count as follows: count = (MSW * 65536) + LSW count = (MSW <<...

  • Page 16: Mechanical Drawings

    7 MECHANICAL DRAWINGS 7.1 The R9120 must be wall mounted, or mounted inside an appropriate enclosure rated for the weather, location, and electrical components located inside it. The R9120 mounting holes are detailed below.

  • Page 17: Warranty And Contact Information

    LIMITED 5 YEAR WARRANTY AND EXCLUSIONS Leviton warrants to the original consumer purchaser and not for the benefit of anyone else that this product at the time of its sale by Leviton is free of defects in materials and workmanship under normal and proper use for five years from the purchase date. Leviton’s only obligation is to correct such defects by repair or replacement, at its option.
  • Page 18 DI-007-R9120-00A...

This manual is also suitable for:

R9120

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