CSI-F-10 User manual - Hydac

GSM Radio Module CSI-F-10 Page 809 CM Program FunctionsA CM program consists of many individual functions that are linked with one anotherand that are processed and evaluated cyclically.9.1 General Information Concerning FunctionsA function has Inputs, Outputs and Parameters. This means, for example, the function"Median value" reads a numerical value at the input, forms a median value above it andthen displays this at the output. A parameter is used to define the amount of time forwhich the calculation is rendered.9.1.1 Inputs / OutputsFor most functions, the outputs change during the running time, depending on theinput. Functions are linked with one another in the Editor. This means, for example,that the output of a function can be linked with the input of a different function. It ispossible to make one output dependent on several inputs, but not several outputs onone input.There are two types of inputs/outputs, depending on the value type: Numerical andBoolean. A "Boolean output" can only be linked with a "Boolean input" and a numericaloutput can only be linked with a "numerical input".9.1.1.1 Numerical ValuesA numerical value is a decimal number, i.e. a numerical value with an optionalplus/minus sign and any number of digits after the decimal point. It is accurate to 7-8significant places. That means that with a value of 2 million (7 places in front of thedecimal point), the addition of a value of 0.001 (3 places after the decimal point) will notalter the numerical value. One would need accuracy to at least 10 significant places forit to be altered.Numerical inputs/outputs and the corresponding connection lines are shown in blue.9.1.1.2 Boolean ValuesA Boolean value is a logical status. There are only 2 statuses: "true" or "1" and false or"0".Boolean inputs/outputs and the corresponding connection lines are shown in green.Status 2011/08/17 HYDAC ELECTRONIC GMBH Part.-Nr.: 669752