test scripts

snippets/test4.py

@@ -0,0 +1,16 @@
+from pymodbus.client.sync import ModbusSerialClient
+import serial.rs485
+
+ser=serial.Serial(port='/dev/ttyAMA0',baudrate=1200)
+ser.rs485_mode = serial.rs485.RS485Settings(rts_level_for_tx=False, 
+                                            rts_level_for_rx=True,
+                                            delay_before_tx=0.005,
+                                            delay_before_rx=-0.0)
+
+client = ModbusSerialClient(method='rtu')
+client.socket = ser
+client.connect()
+result = client.read_holding_registers(address=0x2000, count=2, unit=1)
+print(result)
+print(result.registers)
+client.close()