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Messages - wakko59

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1
Technical support / Re: (Warning: No Response from PLC !)
« on: June 28, 2007, 12:26:31 AM »
Thanks for the reply,
No the ATX PSU from most Computers has both a +12 and -12V supply which gives a 24 V supply as both are referred to 0V. An interessting article on how to convert an ATX into very stable  Bench Power supply at :
(http://www.wikihow.com/Convert-a-Computer-ATX-Power-Supply-to-a-Lab-Power-Supply) ... cheap... even buying a New ATX PSU. I'm current investigating the rs232 cable to see if there is an issue with the handshaking pairs.
Thanks again,
Wakko59

2
Technical support / Re: (Warning: No Response from PLC !)
« on: June 22, 2007, 05:50:20 AM »
Thanks again for your help.
The PSU is a brand new ATX Computer PSU so I expect is is well regulated.
Yes the LEDS light up and extinguish as described leaving the RTC LED on
The ticking clock is also working
I ran a Loopback test on the PC by shorting together
RX-TX, DSR-DTR, and  RTS-CTS pairs and opened up a session in Hyperterminal and typed in some text which is immediately returned. I assume this confirms a working RS232port.
I have emailed support and described thes details.
Thanks again for your help
Kind regards,
Wakko

3
Technical support / Re: (Warning: No Response from PLC !)
« on: June 21, 2007, 12:08:45 AM »
Thanks for the Reply,
Yes All port settings are the same for both PC and PLC. I have the TL server running and I am using the RS 232 port (not the USB port). Disconnecting the serial cable from the PLC board and  trying to connect gives the same result ( Warning no response....) It's as if the PLC board is not connected at all.
I am currently checking that all is well with my PC port and this points to a faulty board   no??
Is there any other test I can do? Is there an issue with SwitchMode PSU's?
Thanks again
Wakko.

4
Technical support / (Warning: No Response from PLC !)
« on: June 20, 2007, 10:59:01 AM »
Hi there,
Brand new to this. I have a T100MD-888+ and get the message
   (Warning: No Response from PLC !) when I try to send the IR* string in the Serial Commd Setup screen. Ive set the PC port to match the Baud rate and Comm1, parity,stop etc but get no other message. Get an error if I try to Detect PLCID. I have a Switch mode PSU connected at 24v (ATX unit for a PC). I dont think I have any other software which is using the RS232 port.
Tried just transferring a sample program also doesn't connect

Any help gratefully recieved. Wakko

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