Problem:
When two or more physical devices are connected to the same logical device and if one of them is disconnected at that time the current status of the device remains the same.
Solution:
To validate connectivity between physical device and sever, when more than two physical device are present in Logical device following are the steps:
Steps 1 : Add variable // Add variables, one for each device in a format mention below.
Variable Name : Devicestatus_<devicename> // name format must match with mentioned format
Type : Analog
Source Type : Constant
//Server write the value in Devicestatus_<devicename> variable.
0=Device Connected
-1=Device Disconnected
Step 2 : Add CBP
Condition Name : <Give any suitable name >
Action : Conditional Alarm
Add Condition :
Variable Operator Limit Type Limit
Devicestatus_<devicename> == Constant 1
Evaluation Method : Select Periodicity
Periodicity : <enter time to generate alarm >
Action Details : Enter action details like Alarm name, mobile number,
email address.
Step 3: Save