To sum 2 inputs we will use the Function Code 2. The formula is:
(A*K1) + (B*K2) + (C*K3)
where A, B and C are inputs and K1, K2 and K3 are coefficients. We will not connect
anything to input C and assign a value of 1 to coefficients K1 and K2. We will also
assign a value of 0 for K3 to disable the third input C.
1.
Configuration of the Math A module:
• Press the E-mode button (dot button) until you see DISPLAY/ CONFIGURE/
PROGRAM at the bottom of the display.
• Press the F2 button until
CONFIGURE
5
is displayed at the bottom.
• Press F3 to accept the configuration mode. On design level A controllers, the
bottom line should now display the following:
POINT
L
.
On a design
level B controller, the bottom line should read
DATAPOINT
5
or
MODULE
.
Press the F2 button until
DATAPOINT
5
is displayed.
• Press F3 to accept the DATAPOINT configuration mode. The bottom line should
now display the following:
POINT
L