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Johnson Controls EasyIO FW Series User Manual
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Johnson Controls EasyIO FW Series User Manual

Johnson Controls EasyIO FW Series User Manual

Modbus subordinate
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EasyIO FW Series
Modbus Subordinate User Guide
LIT-12013785

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Summary of Contents for Johnson Controls EasyIO FW Series

  • Page 1 EasyIO FW Series Modbus Subordinate User Guide LIT-12013785...
  • Page 2 While every effort has been made to assure the accuracy of this document, Johnson Controls (S) Pte Ltd is not responsible for damages of any kind, including without limitation consequential damages, arising from the application of the information contained herein.
  • Page 3 United States Compliance Statement (Part 15.19) This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation.

  • Page 4: Table Of Contents

    Table of Contents Introduction ................................... 5 Prerequisites .................................. 5 Device software configuration limitations ........................6 Configuring the Modbus serial network ........................6 Configuring the Modbus TCP subordinate network ...................... 9 Technical support................................. 12...

  • Page 5: Introduction

    Introduction The EasyIO® FW series supports use of a Modbus subordinate through the Modbus subordinate driver. The series facilitates the following Modbus subordinate protocols: • Modbus RTU subordinate • Modbus TCP Subordinate The minimum firmware requirement for best performance of the BACnet protocol is v1.0b17a or later for the V1 series and v2.0b17a or later for the V2 series.

  • Page 6: Device Software Configuration Limitations

    Device software configuration limitations There are the following limitations for the Modbus RTU subordinate/Modbus TCP subordinate: Max network allowed 1 (of both drivers) Max discrete points allowed 200 register addresses (total) Max coil output allowed 200 register addresses (total) Max input register allowed 200 register addresses, depending on data type.
  • Page 7 3. Select easyioFWMbSlave from the Sedona palette and drag ModbusSlaveSerialNetwork to your app. You can drag the object to the EasyIO folder or create a new folder for the serial network object. In the following example, the object is in a new folder with a Modbus label. 4.
  • Page 8 Input/ Precision Remarks Holding Registers Data Type Word 16 bit 16 bit Signed Integer Standard Long 32 bit 32 Bit Signed Integer Standard Float 32 bit 32 Bit Float Standard There are a maximum of 200 input registers and holding registers. The FW series Modbus serial subordinate network supports three data types including the Integer, Float, and Long data types.

  • Page 9: Configuring The Modbus Tcp Subordinate Network

    Name Register Type -------------------- -------------- Set Point (Float type) floating point (2 registers) Duration (Long type) 32-bit data (2 registers) Count (Integer) 16-bit data (1 register) Delay (Signed Integer) 16-bit data (1 register) The Modbus register does not export any value. You must manually link a valid value to the Modbus register. For example, in the following figure, you can export a temp value as a Modbus register.
  • Page 10 4. Double-click the object to view the property sheet and enable the network. 5. Drag the Modbus register type object to the Network object. The register object must be a child of the Network object. Modbus registers support register addresses in a decimal format. By default, all registers are set to the disabled mode.
  • Page 11 Input/ Precision Remarks Holding Registers Data Type Word 16 bit 16 bit Signed Integer Standard Long 32 bit 32 Bit Signed Integer Standard Float 32 bit 32 Bit Float Standard...

  • Page 12: Technical Support

    JOHNSON CONTROLS C/O CONTROLS PRODUCT MANAGEMENT WESTENDHOF 3 507 E MICHIGAN ST NO. 32 CHANGJIJANG RD NEW DISTRICT 45143 ESSEN MILWAUKEE WI 53202 WUXI JIANGSU PROVINCE 214028 GERMANY CHINA Contact information Contact your local branch office: www.johnsoncontrols.com/locations Contact Johnson Controls: www.johnsoncontrols.com/contact-us...