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TELEVAC
INSTRUMENT MANUAL
VACUUM GAUGE MODEL MM200
600
COMMUNICATIONS
601
RS232 INTERFACING WITH COMPUTER USING MICROSOFT HYPER TERMINAL
1.
Turn off the MM200, remove the module from slot #6 (if one is positioned in this slot) and install the RS232
module next to it, to the right. The modules must be installed at the same time.
2.
Set the switch on the back of the RS232 module to setup.
3.
Connect a RS232 extension cable from the back of the MM200 to your computer and turn the MM200 back
on.
4.
Verify the COM port the cable is connected to, in the control panel of your computer.
5.
Open up the Hyper Terminal on your computer (click Start, Programs, Accessories, Communications,
Hyper Terminal)
6.
Double click Hyper Terminal icon (if you are already setup click on MM200 setup icon, verify that you are
connected to the system, bottom left hand side of window should say connected, and proceed to step 11.)
7.
Choose a name and an icon for future use. (This is what you will use after initial set up).
8.
Click on the connect using tab and choose the COM port that you found in step 3. Click OK.
a. Set bits per second to 9600
b. Leave data bit, parity, and stop bits where they are set
c. Set flow control to Xon/Xoff.
d. Close configure box.
9.
Verify that you are connected to system. (Bottom left hand side of window should say connected.
10. Click properties on Hyper Terminal, far right icon on task bar.
a. Click on settings tab
b. Click on terminal keys
c. Click on Ctrl + H
d. Choose auto detect from emulation optics.
e. Set backscroll buffer lines to 500
f.
Click on ASCII setup.
i. Click on: Append line feeds to incoming line ends.
ii. Click on: Wrap lines that exceed terminal width.
iii. Click OK to close ASCII box
g. Click OK to close properties box
11. Type ST (reads data) and press enter (this should list internal parameters for vacuum gauge.)
12. Find output scale you are looking for from the back of this sheet, type in corresponding code number and
press enter. (an "A" will appear).
13. Type SE (Sets data) and press enter.
14. Repeat step 12 and confirm the change you made was accepted.
15. Close Hyper Terminal (save changes on first time setup).
16. Turn the MM200 off, remove the RS232 module (if desired), and disconnect the cable.
17. Setup is now complete.
160Phone:(215) 947-2500 fax:(215) 947-7464 e-mail:sales@televac.com
MM-200_im REV M
Page 66 of 160
web site:www.televac.com
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