Hi everyone,
Does anyone has been able to send UDP commands to a TENMA 72-13210 Power Load using a python 3.0 script ?
When I send an UDP command (*IDN? for example), I am unable to retrieve data from the UDP socket.
Best regards,
import os, sys
import re, string
import socket
import time
import logging
# Register logs from the module to the
# root logs
logs = logging.getLogger(__name__)
"""
Power load class
"""
class Load():
"""
Initialize everything
@param context instrument context (ie. ip and port)
@param timeout instrument timeout
@return none
"""
def __init__(self,
context,
timeout = .5):
# Open a pyvisa ethernet link to control the
# power load
try:
self.ip = context['ip']
self.port = context['port']
logs.info("Open load (ip: %s, port: %d)" % (context['ip'],
context['port']))
except:
logs.error("Unable to open load (ip: %s, port: %d)" % (context['ip'],
context['port']))
# Configure power load by reading it's identifier
# and resetting the device
self.timeout = timeout
print(self.query('*IDN?'))
try:
self.query('*REBOOT')
time.sleep(1)
except:
logs.error("Unable to retrieve load identifier")
logs.error("Ensure that load is VISA capable !")
"""
Write function
@param self object pointer
@param data data command
@return none
"""
def write(self, data):
self.dev.sendto(data.encode(), (self.ip, self.port))
logs.debug("Send data: %s" % data)
"""
Read function
@param self object pointer
@return data command
"""
def read(self):
try:
data = self.dev.recv(64)
print(data, server)
logs.debug("Receive data: %s" % data)
return data
except:
pass
"""
Query function
@param self object pointer
@param data data command
@return data command
"""
def query(self, data):
self.dev = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.dev.connect((self.ip, self.port))
self.dev.settimeout(self.timeout)
self.write(data + '\n')
return self.read()
if __name__ == "__main__":
load = Load(context = { 'ip' : "172.16.169.70",
'port' : 18190 })
