Re: GPIB remote control

["Cobb, Tom \(DLSLtd,RAL,LSCI\) via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Ralph,

The Moxa can support RFC2217 mode by changing the settings on a port to allow you to set baud, bits, parity, etc. from the client side. It seems to work well, most of the time... I've had a few Moxas that stop responding to these commands semi-randomly, so I don't tend to use this mode on beamlines as much as I used to.

Thanks,

Tom

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From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>
Sent: 06 November 2020 10:11
To: EPICS Tech Talk <tech-talk at aps.anl.gov>
Subject: Re: GPIB remote control

 

Hi Mark,

On Thu, 5 Nov 2020 at 20:11, Mark Rivers via Tech-talk <tech-talk at aps.anl.gov> wrote:

This is not working.  I send commands and I don't get a response.  The notes on the RS-232/GPIB converter says it needs full flow control.  My startup script has these commands to talk to the Moxa:

drvAsynIPPortConfigure("serial2", "gsets11:4002 COM", 0, 0, 0)
asynSetOption(serial2,0,baud,19200)
asynSetOption(serial2,0,bits,8)
asynSetOption(serial2,0,stop,1)
asynSetOption(serial2,0,parity,none)
asynSetOption(serial2,0,crtscts,Y)

Any idea why this would not work, when it did work with a local serial port?

I am baffled. You can configure the Moxa box remotely by setting the asyn options?

Honestly, I would never ever have expected that to work. Is that a Windows thing? Wait... or does the Moxa emulate a modem - AT commands and all?

Like Maren, I would always use the web interface on the Moxa to configure the serial line, before connecting with a telnet client to test and finally have the asyn IOC connect.

Really interesting.

~Ralph

 

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