def ReadRegister(self, name):
with self.lock:
if name not in self.driver.registers:
raise LabJackException("%s not a register",
LJD_NOT_A_VALID_REGISTER)
type_info = self.driver._typeraw(name)
print("Read: type_info for %s is %s" % (name, type_info))
if 'R' not in self.driver.registers[name]['readwrite']:
raise LabJackException("Cannot read %s" % name,
LJD_REGISTER_NOT_READABLE)
if type_info in ["INT16", "INT32", "UINT16", "UINT32"]:
value = int(ljm.eReadName(self.handle, name))
elif type_info in ["STRING"]:
value = ljm.eReadNameString(self.handle, name)
elif type_info in ["FLOAT32", "FLOAT64"]:
value = ljm.eReadName(self.handle, name)
else:
raise LabJackException(
"%s type unknown for %s" % (type_info, name),
LJD_UNKNOWN_TYPE)
info = self.driver.registers[name]
if "constants" in info:
if value in info["constants"]:
value = info["constants"][value]
return value
"""
Demonstrates how to read the device name string from a LabJack.
"""
from labjack import ljm
# Open first found LabJack
handle = ljm.open(ljm.constants.dtANY, ljm.constants.ctANY, "ANY")
# handle = ljm.openS("ANY", "ANY", "ANY")
info = ljm.getHandleInfo(handle)
print(
"Opened a LabJack with Device type: %i, Connection type: %i,\n"
"Serial number: %i, IP address: %s, Port: %i,\nMax bytes per MB: %i"
% (info[0], info[1], info[2], ljm.numberToIP(info[3]), info[4], info[5])
)
# Call eReadNameString to read the name string from the LabJack.
string = ljm.eReadNameString(handle, "DEVICE_NAME_DEFAULT")
print("\nDevice name : %s" % string)
# Close handle
ljm.close(handle)
https://labjack.com/support/software/api/ljm/function-reference/ljmereadnamestring
T-Series and I/O:
Modbus Map:
https://labjack.com/support/software/api/modbus/modbus-map
Hardware Overview(Device Information Registers):
https://labjack.com/support/datasheets/t-series/hardware-overview
"""
from labjack import ljm
# Open first found LabJack
handle = ljm.openS("ANY", "ANY",
"ANY") # Any device, Any connection, Any identifier
#handle = ljm.openS("T7", "ANY", "ANY") # T7 device, Any connection, Any identifier
#handle = ljm.openS("T4", "ANY", "ANY") # T4 device, Any connection, Any identifier
#handle = ljm.open(ljm.constants.dtANY, ljm.constants.ctANY, "ANY") # Any device, Any connection, Any identifier
info = ljm.getHandleInfo(handle)
print("Opened a LabJack with Device type: %i, Connection type: %i,\n"
"Serial number: %i, IP address: %s, Port: %i,\nMax bytes per MB: %i" %
(info[0], info[1], info[2], ljm.numberToIP(info[3]), info[4], info[5]))
# Call eReadNameString to read the name string from the LabJack.
string = ljm.eReadNameString(handle, "DEVICE_NAME_DEFAULT")
print("\nDevice name : %s" % string)
# Close handle
ljm.close(handle)
"Serial number: %i, IP address: %s, Port: %i,\nMax bytes per MB: %i" %
(info[0], info[1], info[2], ljm.numberToIP(info[3]), info[4], info[5]))
if info[0] == ljm.constants.dtT4:
print("\nThe LabJack T4 does not support WiFi.")
sys.exit()
# Setup and call eReadNames to read WiFi configuration from the LabJack.
names = [
"WIFI_IP", "WIFI_SUBNET", "WIFI_GATEWAY", "WIFI_DHCP_ENABLE",
"WIFI_IP_DEFAULT", "WIFI_SUBNET_DEFAULT", "WIFI_GATEWAY_DEFAULT",
"WIFI_DHCP_ENABLE_DEFAULT", "WIFI_STATUS"
]
numFrames = len(names)
results = ljm.eReadNames(handle, numFrames, names)
print("\nWiFi configuration: ")
for i in range(numFrames):
if names[i] == "WIFI_STATUS" or names[i].startswith("WIFI_DHCP_ENABLE"):
print(" %s : %.0f" % (names[i], results[i]))
else:
print(" %s : %.0f - %s" %
(names[i], results[i], ljm.numberToIP(int(results[i]))))
# Setup and call eReadNameString to read the WiFi SSID string from the LabJack.
name = "WIFI_SSID"
result = ljm.eReadNameString(handle, name)
print(" %s : %s" % (name, result))
# Close handle
ljm.close(handle)
#handle = ljm.openS("ANY", "ANY", "ANY")
info = ljm.getHandleInfo(handle)
print("Opened a LabJack with Device type: %i, Connection type: %i,\n" \
"Serial number: %i, IP address: %s, Port: %i,\nMax bytes per MB: %i" % \
(info[0], info[1], info[2], ljm.numberToIP(info[3]), info[4], info[5]))
# Setup and call eReadNames to read WiFi configuration from the LabJack.
names = ["WIFI_IP", "WIFI_SUBNET", "WIFI_GATEWAY", "WIFI_DHCP_ENABLE",
"WIFI_IP_DEFAULT", "WIFI_SUBNET_DEFAULT", "WIFI_GATEWAY_DEFAULT",
"WIFI_DHCP_ENABLE_DEFAULT", "WIFI_STATUS"]
numFrames = len(names)
results = ljm.eReadNames(handle, numFrames, names)
print("\neWifi configuration: ")
for i in range(numFrames):
if names[i] == "WIFI_STATUS" or names[i].startswith("WIFI_DHCP_ENABLE"):
print(" %s : %.0f" % (names[i], results[i]))
else:
print(" %s : %.0f - %s" % \
(names[i], results[i], ljm.numberToIP(int(results[i]))))
# Setup and call eReadNameString to read the WiFi SSID string from the LabJack.
name = "WIFI_SSID"
result = ljm.eReadNameString(handle, name)
print(" %s : %s" % (name, result))
# Close handle
ljm.close(handle)
def __getName(self):
name = ljm.eReadNameString(self.handle, "DEVICE_NAME_DEFAULT")
return name
