Divigraph Industrial Wireless Gateway : User's Guide : Page 19

17 September 2021

NG Series Industrial Wireless Gateway User Guide

DIVIGRAPH

Doc No. 20DD1980

Revision 4

15

Set Time

The Set Time function allows the NG Series Industrial Wireless Gateway time to be set manually or to the

host time and date.

By setting the time to the host time and date, the time is adjusted to the host time without the UTC offset.

For example, if the host indicates a time of 14:30 (UTC+8), the gateway time will be set to 06:30 (UTC).

The time must be manually adjusted to include the UTC offset for the gateway to reflect the host time.

We recommend using UTC time. When setting the time to include the UTC offset, care must be taken to

ensure that all related system times are adjusted to reflect the same UTC offset.

Software Upgrading

Software Upgrading allows the selection of a software file to upgrade the gateway. On selection, a dialog

box will appear to allow selection of the software file. On submit the file will be checked and a

confirmation dialog box will appear.

Modbus Settings

The Modbus tab allows process values to be published using the MODBUS protocol on port 502.

To use the Modbus TCP protocol to output sensor static data:

1. Modify the NG Series Industrial Wireless Gateway Modbus settings:

a. Create a new Modbus configuration file to upload to the gateway using a text editor.

b. Save the file to be uploaded as “modbus_gw.ini”.

c. Edit the file:

[INPUT_REGISTERS]

[HOLDING_REGISTERS]

REGISTER = 200,2,0134880000010041,2,3,1,0,0,0,0

REGISTER = 202,2,0134880000010041,2,4,1,0,0,0,0

REGISTER = 204,2,0134880000010041,2,5,1,0,0,0,0

REGISTER = ….

Where:

REGISTER = AAA,B,MMMMMMMMMMMMMMMM,C,D,E,F,G,H,I

AAA

Offset from the first Modbus

Holding Register (increments by B)

B

Data Size (word count)

MM…

EUI 64 Device ID

C

TSAP ID

D

Object ID

E

Attribute ID

F

Index 1

G

Index 2

H

Method ID (0)

I

Status Byte Type (0)

2. Navigate to the “Maintenance” section and select the “Modbus” tab.

3. Select “Upload Modbus File” and browse to the relevant Modbus configuration file.