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Appendix
Signal
Name
Ground
Tx
Rx
COMMUNICATING WITH SYSTEM 1010/1020 VIA THE RS-232 INTERFACE
The following sections assume that you are familiar with the basics of using a Windows 3.x or Win-
dows 95/98/NT/2000/XP based communications program. All PC computers provide at least one se-
rial port using either a 9-pin or 25-pin D-type connector. The port designation can be either COM 1 or
COM 2. Usually, when a computer includes two serial ports, COM 1 will be the 9-pin connector and
COM 2 will be the 25-pin connector. However, port designations can vary from manufacturer to manu-
facturer, so you will have to positively identify the COM port you wish to use for the flowmeter interface.
Connect the cable between the flowmeter and your PC using either the 25-pin, 9-pin or USB to RS-
232 adapter connector, depending upon the port's architecture.
HOW TO USE THE Windows HyperTerminal PROGRAM
Windows provides a communication program called HyperTerminal, which is ideal for interfacing your
computer with the flowmeter. The following typical example explains how to set up HyperTerminal.
NOTE: Depending upon the Windows applications being used this setup procedure may vary.
1. From the Windows desktop, left-click on the [START] button.
2. Holding down the left mouse button, move the highlight up to [Programs], then across to [Accesso-
ries]. Slide the highlight down to [HyperTerminal], then release the left mouse button.
3. Within the HyperTerminal window, move the mouse pointer down to [Hyperterm.exe] and then
double-click the left mouse button.
4. This selects the [Connection Description] dialog box. Enter a name for your connection (e.g.,
1010N). You can optionally select an icon for this connection by clicking on one of the icons
displayed in the scrolling frame at the bottom of the window. Click [OK].
5. This selects the [Phone Number] dialog box. Move the cursor to the arrow at the right of the
[Connect Using] field. Left click on the arrow to expand the field and then move the highlight down
to [Direct to Com 1 (or 2)] depending on the port connected to the interface cable. Click [OK] to
select the [Com 1 (or 2) Properties] Dialog box. Set up your RS-232 parameters as shown in the
example below. Left-click on the [OK] button.
PC DB-9
1010P/1020N
Terminal
Terminal
Pin 5
Pin 5
Pin 2
Pin 3
Pin 3
Pin 2
1
5
6
9
PC DB-9 Connector
1010P/1020N/990P Connector
(Wiring Side View)
1010WP
1010N
Terminal
Terminal
Pin E
TB1- pin 6
Pin C
TB1- pin 1
Pin B
TB1- pin 4
H
A
B
G
K
J
C
F
E
D
1010WP/WDP Connector
(Wiring Side View)
B-3
1020NFM-1D
1010X
Terminal
TB2-pin 16
TB2-pin 11
TB2-pin 14
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