Emerson Manual: ABB Totalflow XRC 6490 Integration Guide Using Serial Modbus Manuals & Guides

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Connecting an Emerson® Wireless Gateway to
the ABB Totalflow XRC 6490

Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1

Emerson WirelessHART® Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1

Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4

1.1 Purpose

This document describes how to connect an Emerson Smart Wireless Gateway to a ABB Totalflow

XRC6490using serial Modbus

®

.

1.2 Emerson WirelessHART® Gateway

 ABB Totalflow XRC6490 with PCCU configuration software

 Emerson Smart Wireless Gateway1420/1410

 A computer setup to connect to the Gateway

1.3 Assumptions

1. The user of this document has a fundamental understanding of the ABB Totalflow PCCU
software.

2. A comm port has been added in the Totalflow configuration for Modbus communications.

3. The user of this document has a fundamental understanding of the Gateway.

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1.4 Wiring

1. Wire the modbus terminals.

Note

The Smart Wireless Gateway 1420 wiring diagram is shown below.

Figure 1-1. Standard Terminal Block

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2. Connect the modbus “A” wire to pin 6 and “B” wire to pin 8. In this case we are

Figure 1-2. Connecting to Comm Port 2

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connecting to Comm Port 2.

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1.5 Configuration

1. Configure the 1420 for serial modbus communication. This can be done using the web
browser. In this case we are using the following communication settings, Baud Rate =
9600, Start Bit = 1, Data Bit = 8, Parity = None, Stop Bit = 1.

Figure 1-3. 1420 Settings for serial Modbus communications

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Figure 1-4. 1420 Settings for serial Modbus Register Map

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2. Configure the Totalflow by starting the PCCU software. Click the Entry button to

Figure 1-5. Starting the PCCU software

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connect to the Totalflow XRC 6490 hardware.

3. In this case we have renamed Comm Port 2 to RSMT Modbus. Select the Comm Port
configured for modbus communications.

4. In the “Setup” tab, set the Baud Rate and the Register Format values. The Baud Rate
must match with the Gateway modbus parameter settings.

Note

The value entered in “Register Format” will depend on what modbus registers you are reading in
the Gateway.

5. Based on what you chose in the Gateway Modbus communication web page for “Use
swapped Floating Point format”, enter in correct Register Format value.

a. For Gateways not using swapped floating point format, select the “16 BIT Modicon”.
b. If using the swapped format, then choose “16 Bit Word Swapped” in the Totalflow.

Figure 1-6. Select the Comm Port configured for Modbus communications

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