fix modbus rtu packe pause for watlowF4T issues.

Author: Myles Metzler

chamberconnectlibrary/modbus.py

@@ -182,14 +182,16 @@ def __init__(self, address, port, **kwargs):
         #watlow suggests using 0.012 char send time for buads greater than 19200
         databits, stopbits = kwargs.get('databits', 8), kwargs.get('stopbits', 1)
         baud = kwargs.get('baud', 9600)
-        self.pause = 3.5 * (((databits + stopbits + 2)/ baud) if baud < 19200 else 0.012)
+        # calculated pause time does not work on the Watlow F4T, using watlow recomended delay...
+        #self.pause = 3.5 * (((databits + stopbits + 2)/ baud) if baud < 19200 else 0.012)
+        self.pause = 0.012
         self.serial = serial.Serial(
             port=port,
             baudrate=baud,
             bytesize=databits,
             parity=kwargs.get('parity', 'N'),
             stopbits=stopbits,
-            timeout=kwargs.get('timeout', 2)
+            timeout=kwargs.get('timeout', 1)
         )
 
     def __del__(self):

setup.py

@@ -5,7 +5,7 @@ def readme():
         return f.read()
 
 setup(name='chamberconnectlibrary',
-      version='1.1.3',
+      version='1.1.4',
       description='A library for interfacing with Espec North America chambers',
       long_description=readme(),
       url='https://github.com/EspecNorthAmerica/ChamberConnectLibrary',