1
This Quick Install Guide is applicable for models: 620S, 620S-BT, 640S, 760S, 780S, and 780S-UHP.
A copy of this Quick Install Guide, the 600/700 Series Modbus manual and the 620S, 640S, and 780S product manuals are
also included on the digital communication information CD included in your shipment. This information is also available for
download
.
Connecting to a Modbus Network
You will need the following to connect Modbus to your device:
1.
A Modbus equipped 600/700 Series flow meter
2.
A PC equipped with a 2-wire RS-485 interface card or USB to RS-485 adapter.
3.
A 2-wire RS-485 network with an end of line terminator with pull up and pull down resistors. This becomes
more critical when you have more slaves, longer wires, and higher baud rates. See 600/700 Series Modbus
Manual, Chapter 1.
4.
A HyperTerminal or another terminal program to access the boot loader to set the ID#, Baud rate, Parity, and
Tx delay.
Note: The HyperTerminal has been removed from Windows 7. Go to
http://helpdeskgeek.com/windows-
7/windows-7-hypertermnal
for alternative and information.
5.
Power supply to power 600/700 Series instrument, 24VDC @ 625 MA, or 15 VDC (620S-BT only)
Installation Steps
1.
Connect the flow meter to the A and B RS-485 network connections.
2.
Start the HyperTerminal (Baud 9600, bits 8, Parity N, Stop 1).
3.
Power-up the meter. Pin 1 +24 VDC and Pin 2– 24 VDC.
4.
Press Enter on your PC within 2 seconds of powering up the 600/700 Series to start the boot loader.
5.
Setup meter ID (1 to 247) and the other COM settings. See Set Up instructions in the 600/700 Series Modbus
Manual, Chapter 2.
6.
Quit the boot loader and exit the HyperTerminal. Start your Modbus application.
7.
All the available registers are listed below.