1

<?xml version='1.0' encoding='utf-8'?>

     2

<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

     3

  <variables>

     4

    <variable name="SomePLCglobal" type="HMI_STRING" onchange="MyOnChangeFunc"/>

     5

    <variable name="AlarmCount" type="HMI_INT"/>

     6

  </variables>

     7

  <globals>

     8

    <xhtml:p><![CDATA[

     9

from twisted.web.resource import Resource

    10

import json

    11

    12

class AlarmJsonResource(Resource):

    13

    def render_GET(self, request):

    14

        return ''

    15

    16

    def render_POST(self, request):

    17

        print(request.__dict__)

    18

        newdata = request.content.getvalue()

    19

        print newdata

    20

        selected_alarms = [

    21

            {"name":"three", "sides":3},

    22

            {"name":"four", "sides":4},

    23

            {"name":"five", "sides":5},

    24

            {"name":"six", "sides":6},

    25

        ]

    26

        return json.dumps(selected_alarms)

    27

    28

    29

def MyOnChangeFunc(changed_var_name):

    30

    print changed_var_name + ": " + getattr(PLCGlobals, changed_var_name)

    31

    32

]]></xhtml:p>

    33

  </globals>

    34

  <init>

    35

    <xhtml:p><![CDATA[

    36

]]></xhtml:p>

    37

  </init>

    38

  <cleanup>

    39

    <xhtml:p><![CDATA[

    40

]]></xhtml:p>

    41

  </cleanup>

    42

  <start>

    43

    <xhtml:p><![CDATA[

    44

    45

svghmi_root.putChild("alarms", AlarmJsonResource())

    46

    47

    48

]]></xhtml:p>

    49

  </start>

    50

  <stop>

    51

    <xhtml:p><![CDATA[

    52

]]></xhtml:p>

    53

  </stop>

    54

</PyFile>