Fixes typo and closes #1

write_register.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+import minimalmodbus
+
+instrument = minimalmodbus.Instrument('/dev/ttyAMA0', 1) # port name, slave address (in decimal)
+#instrument = minimalmodbus.Instrument('/dev/serial0', 1) # port name, slave address (in decimal)
+instrument.debug = True
+
+#instrument.serial.port          # this is the serial port name
+instrument.serial.baudrate = 2400   # Baud
+instrument.serial.bytesize = 8
+instrument.serial.parity = minimalmodbus.serial.PARITY_EVEN
+instrument.serial.stopbits = 1
+instrument.serial.timeout  = 0.5   # seconds
+#instrument.address     # this is the slave address number
+instrument.mode = minimalmodbus.MODE_RTU   # rtu or ascii mode
+
+
+# It needs to long press the button on meter last for 3 seconds to enter the set-up interface firstly,
+# then the set-up can be realized via RS485 communication. After the set-up is finished,
+# long press last for 3 seconds to exit the set-up interface
+instrument.write_float(28, 2, 2) #Write Address=28, baudrate 2=9600, 2 registers)