5 sample program, 1 example of basic program for send and receive, Sample program -12 6.5.1 – Yokogawa PR300 Power and Energy Meter User Manual

Page 106: Example of basic program for send and receive -12

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6-12

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< 6. Modbus/TCP Communication Protocol>

IM 77C01E01-10E

6.5

Sample Program

6.5.1

Example of BASIC Program for Send and Receive

This section shows an example of a command sending and response receiving program
created with Visual-Basic*

2

for PC/AT*

1

(or compatible machines).

*1 PC/AT is the product of IBM Ltd.
*2 Visual-BASIC is a registered trademark of Microsoft Corporation in the United States.

HUB

PR300 as
Ethernet-serial
gateway function

RS-485 connection

Station number 02

(arbitrary)

(Example)

LAN
connection

LAN
connection

Station number 01 (fixed)
IP address [192.168.1.2]

(arbitrary)

Maximum distance between hub and module: 100 m
Maximum number of hubs connectable in cascade configuration:

4 levels for 10BASE-T

2 levels for 100BASE-TX

Higher-level device
IP address [192.168.1.1]
(arbitrary)

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