RUNTIME: Variable forcing now uses limited list and buffer instead of systematical instance tree traversal and in-tree "fvalue" to keep track of forced value for pointed variables (external, located). Pointer swapping is performed when forcing externals and located, with backup being restored when forcing is reset. Retain still uses tree traversal.
<?xml version='1.0' encoding='utf-8'?>
<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<variables>
<variable name="AlarmNotify" type="HMI_INT"/>
<variable name="SendAlarm" type="HMI_INT" onchange="TriggerAlarm"/>
<variable name="AlarmText" type="HMI_STRING" initial="'POS'"/>
<variable name="AlarmStatus" type="HMI_STRING" initial="'alarm'"/>
</variables>
<globals>
<xhtml:p><![CDATA[
from twisted.web.resource import Resource
import json, time, random, collections
Alarms = []
AlarmIndex = {}
lastid = 0
def TriggerAlarm(changed_var_name):
global Alarms, lastid
new_entry = [time.time(), PLCGlobals.AlarmText, PLCGlobals.AlarmStatus, lastid]
Alarms.append(new_entry)
AlarmIndex[lastid] = new_entry
lastid = lastid + 1
PLCGlobals.AlarmNotify = random.randint(0, 4294967296)
class AlarmJsonResource(Resource):
def render_GET(self, request):
return ''
def render_POST(self, request):
newstr = request.content.getvalue()
newdata = json.loads(newstr)
args = newdata[u'args']
range_feedback = newdata[u'range']
slider_position = newdata[u'position']
visible = newdata[u'visible']
extra = newdata[u'extra']
options = newdata[u'options']
if len(options) == 1 :
action, = options
if action == "action_reset":
del Alarms[:]
AlarmIndex.clear()
elif len(options) == 2 :
action, alarmid = options
if action == "onClick[acknowledge]":
AlarmIndex[int(alarmid)][2] = "ack"
answer = self.renderTable(range_feedback, slider_position, visible, extra)
janswer = json.dumps(answer)
return janswer
def renderTable(self, old_range, old_position, visible, extra):
if len(extra) > 0 and extra[0] != "":
fAlarms = [alrm for alrm in Alarms if alrm[1].find(extra[0])!=-1]
else:
fAlarms = Alarms[:]
fAlarms.reverse()
new_range = len(fAlarms)
delta = new_range - visible
new_position = 0 if delta <= 0 else delta if old_position > delta else old_position
new_visible = new_range if delta <= 0 else visible
visible_alarms = []
for ts, text, status, alarmid in fAlarms[new_position:new_position + new_visible]:
visible_alarms.append({
"time": time.ctime(ts),
"text": text, # TODO translate text
"status": status,
"alarmid": alarmid
})
return new_range, new_position, visible_alarms
]]></xhtml:p>
</globals>
<init>
<xhtml:p><![CDATA[
]]></xhtml:p>
</init>
<cleanup>
<xhtml:p><![CDATA[
]]></xhtml:p>
</cleanup>
<start>
<xhtml:p><![CDATA[
AddPathToSVGHMIServers("alarms", AlarmJsonResource)
]]></xhtml:p>
</start>
<stop>
<xhtml:p><![CDATA[
]]></xhtml:p>
</stop>
</PyFile>