IDEC SmartRelay functions
162
IDEC SmartRelay Manual
Gain and offset parameters
Please note the information on gain and offset parameters in
Chapter 4.3.6.
Parameter p (number of decimals)
Does not apply to the display of On, Off and Ax values in a
message text.
Does not apply to the comparison of On and Off values! (The
compare function ignores the decimal point.)
Timing diagram
Functional description
The function fetches the analog signal at input Ax.
Ax is multiplied by the value of the A (gain) parameter, and
the value at parameter B (offset) is added to product, i.e. (Ax
• gain) + offset = actual value of Ax.
Output Q is set or reset, depending on the set thresholds.
See the calculation rule below.
Calculation rule
• If the On threshold ≥ Off threshold, then:
Q = 1, if the actual value Ax > On
Q = 0, if the actual value Ax ≤ Off.
• If the On threshold < Off threshold, then Q = 1 if
On ≤ actual value Ax < Off.
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
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