Page 83 of 86 SCHÄFER IT-Systems
Industriestraße 41 D-57518 Betzdorf
Phone: +49 (0) 2741/283-770 sales@schaefer-it-systems.de www.schaefer-it-systems.de As
amended on 16/8/2019 (subject to technical changes)
The query frequency is configured in the properties of the SNMP Get element, it is currently limited and cannot be
less than 60 seconds.
11.12. Add an IP-camera
11.12.1. IP camera settings
The name of the element in the system
Coordination period
(sec.)
Transmission period SNMP Get in seconds (at least 60 s)
The "object identifier" in the system
Object type:
analogue - object specifies the numerical value (string or integer) that
results from a given
expression to a real number. The state of the element is specified by the
calculated value and a
predefined level is defined.
discrete - object specifies any value (string or integer). In this case, the
expression
must contain the desired substring. If the substring is found, the state of
the element changes to
"normal", otherwise the element is in "alarm" state
Depending on the object type
analogue - function of the form f (x). The standard value for the sensor is
equal to the measured value:
"x", i.e. corresponds to the expression "x". To calculate the indirect value
of the sensor, it is possible to use
any expression that is allowed "(", ")", as well as:
o operators: "+", "-", "*", "/", "%" (rest of division), "^" (exponentiation);
o Functions: "abs", "sqrt", "exp", "ln", "log", "sin", "cos", "tan", "asin",
"acos", "atan";
o Constants: "pi" (3.1415926 ...), "e" (2.718282818 ....)
For example: "0.1*x+0.5"
discrete - any substring contained in the response in the normal state of
the object
JPEG / MJPEG
The iQdata web interface only supports IP cameras with the compression format JPEG / MJPEG video
stream.
Make sure your camera supports "MJPEG" or "JPEG".