TDC001

[GerdW · Accepted solution]

Hi CFitz,

you should switch the display mode of the array elements to "Hex display" to input hex numbers.

And you should select a COM port.

Closing a port after opening it is common behaviour. But don't close it immediatly after writing to the port as that may clear the write buffer before the data gets send…

[CFitz]

Thank you both so much. It's finally working. I'm going to leave a copy of the basic command here so anyone else with this problem can use it.

[GerdW]

Hi CFitz,

there still is no error handling and the port remains open…

You don't need to wire the "8" constant as that's the default value for "databits"!

[stuleo]

Hi,

Could you please help me to set my servo as a COM port. I connect through the usb connection but I have seen that people manage to connect it as an emulated COM port. I am not sure how to do this but based on your post it seems that you have done it:

"I have the servo set to act as a COM port and MAX sees that port but it get an error whenever I send commands and MAX says that it can not access the device using VISA"

Thank you for any help you may provide.

[CFitz]

Stuleo,

Connect the stepper motor to your PC and then bring up Device Manager.

Under Universal Serial Bus Controllers you should see APT USB Device.

Right Click>Properties>Advanced and then check the box labeled "Load VCP" (Virtual Com Port) and hit OK.

Power cycle the controller and it should reinstall under the Ports (COM & LPT) sub-menu in Device Manager. 

[stuleo]

Thank you very much for your reply! I had seen the node in the device manager before but it didn't cross my mind that this was for a virtual com port. When I ticked this I had some notifications that I need to restart the computer in order to make it work. When I restarted my computer, it was locked and the BitLocker was asking for a recovery key. Anyway, I managed to unlock it but now when I connect the device and I tick this box it keeps showing under the USB controllers and not in the COM port node of the device manager..Do you have any other suggestions on this perhaps? I can't see it as a COM port either at the NI-MAX application which I guess is what I want to achieve in order for VISA to be able to work with this device.

EDIT: I did again what you suggested and now it shows in both the USB and the COM ports. NI-MAX is also able to detect it. Thank you. Hopefully I will manage to make it work with VISA