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Lighthouse PLCs, Inc. : Automation Forum

THE PURPOSE OF THIS FORUM IS: AUTOMATION SOLUTIONS.  IF YOU ARE A PERSON INVOLVED IN SOME ASPECT OF AUTOMATION, HAVE AN APPLICATION YOU JUST CAN'T QUITE GET A HANDLE ON  - HAVE A PRODUCT QUESTION - OR MAYBE HAVE AN ISSUE WITH SOMETHING (EVEN IF IT IS WITH US    ), IT IS POSSIBLE YOU WILL FIND THE ANSWER HERE!!  

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Hopefully the information presented here will help provide solutions to some of today's automation challenges. Some issues are probably old, some are probably new. Many are products of the economy, the resultant reduction in manpower, exacerbated by aging equipment crippled by decreases in maintenance budgets.  The ULTIMATE goal here is that we all become more successful in our careers and chosen professions.

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PLC and Inverter Forum
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h250/h252

Dear Timothy Davis
I use Actwin software for all Hitachi plc.but I have a problem for h250 series plc.Actwin software not correct comunicate notebook to plc(with xp).I use 19200 baudrate and usb to serial converter.
Actwin may be download and upload but not connected continue online mode.Very quickly(5 or 10 second)program say connection error.
If use old desktop pc with rs232 port not problem.
Please send me message to Actron for this problem.

Re: h250/h252

This is a common problem and in 99% it is a problem with the USB device. The recommended procedure is to get the latest update of the device drivers from the manufacturer, in many cases this solves the problem.

We have however just corrected a small problem in the communication in the Hitachi driver for Actwin, if the customers problem remains I recommend to download an updated driver from Actwin website, it is still under test but will be available in maximum 14 days from now. The update will be marked as an update for certain communication problems.

Hope this helps,
Anders