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="AlarmNotify" type="HMI_INT"/>

     5

    <variable name="SendAlarm" type="HMI_INT" onchange="TriggerAlarm"/>

     6

    <variable name="AlarmText" type="HMI_STRING" initial="'POS'"/>

     7

    <variable name="AlarmStatus" type="HMI_STRING" initial="'alarm'"/>

     8

  </variables>

     9

  <globals>

    10

    <xhtml:p><![CDATA[

    11

from twisted.web.resource import Resource

    12

import json, time, random, collections

    13

    14

Alarms = []

    15

AlarmIndex = {}

    16

lastid = 0

    17

    18

def TriggerAlarm(changed_var_name):

    19

    global Alarms, lastid

    20

    new_entry = [time.time(), PLCGlobals.AlarmText, PLCGlobals.AlarmStatus, lastid]

    21

    Alarms.append(new_entry)

    22

    AlarmIndex[lastid] = new_entry

    23

    lastid = lastid + 1

    24

    PLCGlobals.AlarmNotify = random.randint(0, 4294967296)

    25

    26

class AlarmJsonResource(Resource):

    27

    def render_GET(self, request):

    28

        return ''

    29

    30

    def render_POST(self, request):

    31

        newstr = request.content.getvalue()

    32

        newdata = json.loads(newstr)

    33

        args = newdata['args']

    34

        range_feedback = newdata['range']

    35

        slider_position = newdata['position']

    36

        visible = newdata['visible']

    37

        extra = newdata['extra']

    38

        options = newdata['options']

    39

    40

        if len(options) == 1 :

    41

            action, = options

    42

            if action == "action_reset":

    43

                del Alarms[:]

    44

                AlarmIndex.clear()

    45

        elif len(options) == 2 :

    46

            action, alarmid = options

    47

            if action == "onClick[acknowledge]":

    48

                AlarmIndex[int(alarmid)][2] = "ack"

    49

    50

        answer = self.renderTable(range_feedback, slider_position, visible, extra)

    51

        janswer = json.dumps(answer)

    52

        return janswer.encode()

    53

    54

    def renderTable(self, old_range, old_position, visible, extra):

    55

        if len(extra) > 0 and extra[0] != "":

    56

            fAlarms = [alrm for alrm in Alarms if alrm[1].find(extra[0])!=-1]

    57

        else:

    58

            fAlarms = Alarms[:]

    59

        fAlarms.reverse()

    60

        new_range = len(fAlarms)

    61

        delta = new_range - visible

    62

        new_position = 0 if delta <= 0 else delta if old_position > delta else old_position

    63

        new_visible = new_range if delta <= 0 else visible

    64

    65

        visible_alarms = []

    66

        for ts, text, status, alarmid in fAlarms[new_position:new_position + new_visible]:

    67

            visible_alarms.append({

    68

                "time": time.ctime(ts),

    69

                "text": text, # TODO translate text

    70

                "status": status,

    71

                "alarmid": alarmid

    72

            })

    73

    74

        return new_range, new_position, visible_alarms

    75

    76

    77

]]></xhtml:p>

    78

  </globals>

    79

  <init>

    80

    <xhtml:p><![CDATA[

    81

]]></xhtml:p>

    82

  </init>

    83

  <cleanup>

    84

    <xhtml:p><![CDATA[

    85

]]></xhtml:p>

    86

  </cleanup>

    87

  <start>

    88

    <xhtml:p><![CDATA[

    89

    90

AddPathToSVGHMIServers(b"alarms", AlarmJsonResource)

    91

    92

    93

]]></xhtml:p>

    94

  </start>

    95

  <stop>

    96

    <xhtml:p><![CDATA[

    97

]]></xhtml:p>

    98

  </stop>

    99

</PyFile>