Rhosonics GWY-800-B Manual Download Page 5

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9D1-031-D34-A HART to MODBUS RTU Manual (2)

Revision A

HART TO MODBUS RTU MANUAL

2.3

Communication Port Details

2.3.1

HART connection

Configuration with 4-20mA connected to PLC/DCS

Configuration with 4-20mA directly connected to Gateway

2.3.2

Connection to PLC/DCS (digital)

RS-422/485 wiring: Modbus RTU Slave MJ2 to User System

RS-422/485 Connection

PLC1/COM1 GATEWAY

Signal Direction

USER CONNECTOR

Pin No.

Name

Pin No.

Name

TX+

RX+

TX-

RX-

RX+

TX+

RX-

TX-

GND*

User can convert RS485 4 wire + Signal Ground system to a 2 Wire + Signal Ground system by shorting
following signals in the communication cable:

Summary of Contents for GWY-800-B

Page 1: ...HART TO MODBUS RTU MANUAL APPLICABLE TO GWY 800 B GATEWAY...

Page 2: ...e of this document 3 2 Connection and specifications HART to Modbus RTU gateway 3 2 1 Specifications HART to Modbus RTU gateway 3 2 2 Dimensional Details and Mounting Instructions 4 2 3 Communication...

Page 3: ...DCS because the 4 20mA HART signal is less sensitive to noise 2 1 Specifications HART to Modbus RTU gateway Power 24V DC 10 100mA max COM1 PLC1 RS232 RS422 RS485 CMOS HART Out 4 20 mA to Rhosonics an...

Page 4: ...B9 connectors on the Gateway unit DIN rail plate also has the provision to screw the unit to the back panel Following drawing shows how to attach the DIN rail plate to the unit Follow instructions giv...

Page 5: ...ctly connected to Gateway 2 3 2 Connection to PLC DCS digital RS 422 485 wiring Modbus RTU Slave MJ2 to User System RS 422 485 Connection PLC1 COM1 GATEWAY Signal Direction USER CONNECTOR Pin No Name...

Page 6: ...MJ2 to User System CMOS Connection PLC1 COM1 GATEWAY Signal Direction USER CONNECTOR Pin No Name Pin No Name 7 TXD pn RX 3 RXD pn TX 5 GND pn GND Note If user has attached shield to Earth on Device e...

Page 7: ...RTU Slave on MJ2 2 6 MODBUS readable data tables 2 6 1 Float Data 2 Words MODBUS Address Dynamic Variable Value 400001 Primary Variable 400003 Secondary Variable 400005 Ternary Variable 400007 Quatern...

Page 8: ...as occurred 0x10 More Status Available More status information is available HART 0x08 Loop current Fixed The Loop current is being held at a fixed value and is not responding to process variations 0x0...