def ModbusWrite():
try:
try:
modbus = ModbusProtocol(updatecallback=RegisterResults,
address=modbusaddress,
name=device,
rate=baudrate,
Parity=parity,
OnePointFiveStopBits=OnePointFiveStopBits)
except Exception as e1:
print("Test all: Error opening serial device...: " + str(e1))
return False
LowByte = writevalue & 0x00FF
HighByte = writevalue >> 8
Data = []
Data.append(HighByte) # Value for register (High byte)
Data.append(LowByte) # Value for register (Low byte)
RegStr = "%04x" % startregister
modbus.ProcessMasterSlaveWriteTransaction(RegStr, len(Data) / 2, Data)
DisplayComErrors(modbus)
except Exception as e1:
print("Error write device: " + str(e1))
return False
return True
def TestAllAddresses():
try:
modbus = ModbusProtocol(updatecallback=RegisterResults,
address=0,
name=device,
rate=baudrate,
Parity=parity,
OnePointFiveStopBits=OnePointFiveStopBits)
except Exception as e1:
print("Test all: Error opening serial device...: " + str(e1))
return False
try:
for Address in range(0, 0x100):
modbus.Address = Address
print("Testing modbus address %02x" % Address)
for Reg in range(startregister, endregister):
RegStr = "%04x" % Reg
modbus.ProcessTransaction(RegStr, 1)
DisplayComErrors(modbus)
except Exception as e1:
print("Error reading device: " + str(e1))
return False
return True
try:
modbus = None
if writevalue != None and modbusaddress != "all":
if not ModbusWrite():
sys.exit(2)
elif modbusaddress != "all":
try:
if not useTCP:
modbus = ModbusProtocol(
updatecallback=RegisterResults,
address=modbusaddress,
name=device,
rate=baudrate,
Parity=parity,
OnePointFiveStopBits=OnePointFiveStopBits)
else:
modbus = ModbusProtocol(updatecallback=RegisterResults,
address=modbusaddress,
host=hostIP,
port=TCPport)
except Exception as e1:
print("Error opening serial device...: " + str(e1))
sys.exit(2)
try:
for Reg in range(startregister, endregister):
RegStr = "%04x" % Reg
modbus.ProcessTransaction(RegStr, 1)
if not stopbits == None:
OnePointFiveStopBits = True
else:
OnePointFiveStopBits = False
if not parity == None:
if not parity == 1 and not parity == 2:
print(HelpStr)
sys.exit(2)
modbus = None
try:
modbus = ModbusProtocol(RegisterResults,
modbusaddress,
device,
baudrate,
Parity=parity,
OnePointFiveStopBits=OnePointFiveStopBits)
pass
except Exception as e1:
print("Error opening serial device...: " + str(e1))
sys.exit(2)
try:
for Reg in range(startregister, endregister):
RegStr = "%04x" % Reg
modbus.ProcessMasterSlaveTransaction(RegStr, 1)
except Exception as e1:
print("Error reading device: " + str(e1))
sys.exit(2)
print("OK")