Experimental Physics and Industrial Control System
Hi Eliot,
What does the "lsusb" command return for this device?
If you just attempt to talk to it with drvAsynSerialPort in an IOC, and you use an asynRecord to turn on asynTraceIODriver, what do you see at the IOC console when you try to talk to it?
Do you get errors if you try to change the baud rate, data bits, etc. using the asynSerialPortSetup medm screen?
What version of the Linux kernel are you running?
Mark
________________________________
From: [email protected] [[email protected]] on behalf of Specht, Eliot D. [[email protected]]
Sent: Tuesday, May 19, 2015 2:33 PM
To: [email protected]
Subject: USB-to-serial
I have a Eurotherm 2416 temperature controller which travels with me. I was using a desktop computer to run an EPICS IOC, but I realized this was foolish and am replacing it with a laptop. The desktop has a built-in serial port, while the laptop uses a USB-to-serial port. I'm running the same EPICS configuration with some updated modules, but the serial communications which worked on the desktop do not work on the laptop. I get errors with "No reply from device".
I'm hoping someone can explain the confusing results of my search of tech-talk. Some posts suggest that I just plug in the USB-to-serial and use the /dev/ttyUSB0 device which is automatically created. Others suggest that I need to use a command like "modprobe ftdi_sio vendor=0x67b product=0x2303", which gives the error "ftdi_sio: unknown parameter 'vendor' ".
Question: do I need to use the "modprobe ftdi_sio" command, and if so why is the 'vendor' parameter giving it trouble?
Details:
Eurotherm 2416 temperature controller with serial interface
base-3.15.1
asyn-4-26
stream-2-6a
sateco Eurotherm protocols from X.L. Wang
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