test scripts

.pymodhis

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+
+# 2019-06-14 22:50:36.107575
++help
+
+# 2019-06-14 22:50:54.780566
++q
+
+# 2019-06-14 22:52:53.061353
++help
+
+# 2019-06-14 22:53:29.359029
++client.read_ho
+
+# 2019-06-14 22:53:48.878000
++client.read_holding_registers unit=3 address=0 count=3

snippets/test3.py

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+from pymodbus.client.sync import ModbusSerialClient
+import serial.rs485
+
+ser=serial.rs485.RS485(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()

snippets/test4.py

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+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()