YOKOGAWA DpharpEJX vigilantplant EJX Series - Page 65

IM 01C25T02-01E
A-2
Appendix 1. Signal Characterizer (SC) Block
Y
or
X
X or Y
Input section
Line-segment factor
determination section
Output section
IN_1
Determining
the mode
Determining
the gradient
and intercept
Determining the
status and
computing OUT
OUT
processing
BLOCK_ERR
FA0102.EPS
IN_2
CURVE_X
CURVE_Y
SWAP_2
OUT_1
OUT_2
1
2
1 MODE = AUTO
2 MODE = MAN or O/S
Figure A1.2 Overview of the Signal Characterizer Block
The following describes the Signal Characterizer block, dividing its functions into three sections:
• Input section: Determines the mode and judges BLOCK_ERR.
•Line-segment factor determination section: Determines the gradient and intercept for OUT_1 and
OUT_2 based on CURVE_X, CURVE_Y, and SWAP_2 at shift 1.
• Output section: Multiplies the input values in IN_1 and IN_2 by the gradient and adds the intercept to them before
outputting the results. Alternatively, it outputs a limit value.