Point Six Link Manager 4010-43, Руководство пользователя

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Communicating with the Link Manager Link Manager Manual
Common Analog Scales and Offsets
Integer
Integer I/O points work similarly as Analog I/O points. A scale and offset is applied
before the data is displayed or delivered. However for Integer I/O points the offset is
applied before the scale and is an integer value (can be used to zero the reading).
The value of an Integer I/O point will be displayed as
(raw data - offset) * scale .
For example, suppose you have a wireless rain gauge and 1 count of the rain gauge
equals 0.1 inches. And suppose you want to show in the I/O Status page the amount
of rain since the beginning of the year. You set up the scale to be 0.1 and the offset
to be the count of the sensor at the beginning of the year and suppose the
accumulated count is 233489 at the beginning of the year. So in this example the
scale is 0.1 and the offset is 233489.
State
State I/O are discrete I/O points. The number of states for the State I/O depends on
the type of Sensor (for instance a Counter has four states and a Discrete has two).
The meaning of the states depends on the type of sensor. Each state can be named.
Data
A Data I/O contains 8 bytes of data. How these 8 bytes are used depends on the type
of sensor. Link Manager can present this data in one of three ways: as character
data, Serial Number as ASCII Hexadecimal or ASCII Hexadecimal.
Scale Offset Units
0.0625 0 Degrees Celsius
(1/16 of a degree)
0.1125 32 Degrees Fahrenheit
(1.8 * 0.0625)
0.00305 0 % of full scale
0.125 0 Raw 12 bits
1.0 0 Raw signed 16 bits