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pyvisa / pyvisa-py

A pure python PyVISA backend
https://pyvisa-py.readthedocs.io
MIT License
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Exception: error creating link: 4 #104

Closed mbe9a closed 7 years ago

mbe9a commented 7 years ago

I am trying to open an ethernet connection to a Keysight GPIB/USB/LAN Gateway, and I'm getting this error.

Exception Traceback (most recent call last)

in () ----> 1 rm.open_resource('TCPIP::FIRGPIBGateway.phys.virginia.edu::INSTR') /usr/local/anaconda2/lib/python2.7/site-packages/PyVISA-1.8-py2.7.egg/pyvisa/highlevel.pyc in open_resource(self, resource_name, access_mode, open_timeout, resource_pyclass, **kwargs) 1642 raise ValueError('%r is not a valid attribute for type %s' % (key, res.__class__.__name__)) 1643 -> 1644 res.open(access_mode, open_timeout) 1645 1646 for key, value in kwargs.items(): /usr/local/anaconda2/lib/python2.7/site-packages/PyVISA-1.8-py2.7.egg/pyvisa/resources/resource.pyc in open(self, access_mode, open_timeout) 201 logger.debug('%s - opening ...', self._resource_name, extra=self._logging_extra) 202 with self._resource_manager.ignore_warning(constants.VI_SUCCESS_DEV_NPRESENT): --> 203 self.session, status = self._resource_manager.open_bare_resource(self._resource_name, access_mode, open_timeout) 204 205 if status == constants.VI_SUCCESS_DEV_NPRESENT: /usr/local/anaconda2/lib/python2.7/site-packages/PyVISA-1.8-py2.7.egg/pyvisa/highlevel.pyc in open_bare_resource(self, resource_name, access_mode, open_timeout) 1599 :return: Unique logical identifier reference to a session. 1600 """ -> 1601 return self.visalib.open(self.session, resource_name, access_mode, open_timeout) 1602 1603 def open_resource(self, resource_name, /usr/local/anaconda2/lib/python2.7/site-packages/pyvisa-py/highlevel.pyc in open(self, session, resource_name, access_mode, open_timeout) 189 cls = sessions.Session.get_session_class(parsed.interface_type_const, parsed.resource_class) 190 --> 191 sess = cls(session, resource_name, parsed) 192 193 return self._register(sess), constants.StatusCode.success /usr/local/anaconda2/lib/python2.7/site-packages/pyvisa-py/sessions.pyc in __init__(self, resource_manager_session, resource_name, parsed) 182 constants.VI_ATTR_RSRC_CLASS: parsed.resource_class, 183 constants.VI_ATTR_INTF_TYPE: parsed.interface_type} --> 184 self.after_parsing() 185 186 def after_parsing(self): /usr/local/anaconda2/lib/python2.7/site-packages/pyvisa-py/tcpip.pyc in after_parsing(self) 60 61 if error: ---> 62 raise Exception("error creating link: %d" % error) 63 64 self.link = link Exception: error creating link: 4 __________________________________________________________ Machine Details: Platform ID: Linux-4.4.0-93-generic-x86_64-with-debian-stretch-sid Processor: x86_64 Python: Implementation: CPython Executable: /usr/local/anaconda2/bin/python Version: 2.7.11 Compiler: GCC 4.4.7 20120313 (Red Hat 4.4.7-1) Bits: 64bit Build: Dec 6 2015 18:08:32 (#default) Unicode: UCS4 PyVISA Version: 1.8 Backends: ni: Version: 1.8 (bundled with PyVISA) Binary library: Not found py: Version: 0.2 ASRL INSTR: Please install PySerial to use this resource type. No module named serial TCPIP INSTR: Available USB RAW: Please install PyUSB to use this resource type. No module named usb USB INSTR: Please install PyUSB to use this resource type. No module named usb GPIB INSTR: Please install linux-gpib to use this resource type. No module named gpib TCPIP SOCKET: Available Any help would be greatly appreciated.
MatthieuDartiailh commented 7 years ago

Why did you close ?

mbe9a commented 7 years ago

So the device itself can’t be connected to through py-visa. I tried hooking up a gpib device to the gateway and connected to that successfully -- Just me being stupid.

On Sep 8, 2017, at 12:09, Matthieu Dartiailh notifications@github.com wrote:

Why did you close ?

— You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub https://github.com/pyvisa/pyvisa-py/issues/104#issuecomment-328146654, or mute the thread https://github.com/notifications/unsubscribe-auth/AMHWZtvO3Lh2WJGs2iBjbdyVgdSZBG1-ks5sgWa4gaJpZM4PRWxz.