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omron cp1h plc communicate with labview

I have some trouble with the communication of omron CP1H PLC and labview 8.20 which is the versionc can be free used only for one month.
During this test,I download visaruntime4.2 version. I don't know wheather this visaruntime version is suitable for labview 8.20.
In my test ,I fit the baud rate :9600,date bites :7,parity:even,stop bites:2.0
when I write @00RR0000000141*\r  to the examle of (basic write and read).vi,then can read a string.but when I write @00RR00000001 and let this string pass throug a fcs.vi made @00RR00000001 become @00RR0000000141*\r,then I can't read anything.I am puzzled.
And when I imitate the program of the example ,I find that this program can't  opration.
what is wrong with my test?
Thank you for your regards!!!!!!!!
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You should keep your questions to the same topic in the same thread.  You show up on the forum as an NI employee based on the blue bars so I would expect you would know the ettiquette of the forums a bit better than the average new user.  Smiley Wink
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