AF is used to select advanced function. The value of AF is calculated as below:
AF=Ax1 + Bx2 + Cx4 + Dx8 + E x1 6 + F x3 2 + G x64 + Hx128
A=0, HdAL and LdAL work as deviation high and low limit alarms;
A=1, HdAL and LdAL work as high and low limit alarms, and the instrument can have
two groups of high and low limit alarms.
B=0, Alarm and control hysteresis work as unilateral hysteresis;
B=1, As bilateral hysteresis.
C=0, The light bar indicates the output value;
C=1, The light bar indicates the process value (for instruments with light bar only).
D=0, Loc=808 can access the whole parameter table;
D=1, Loc=PASd can access the parameter table.
E=0, Normal application on HIAL and LoAL;
E=1, HIAL AND LoAL will become to deviation high alarm and Deviation low alarm
F=0, Fine control mode, internal control resolution wa s demonstration’s 10 times.
When on linear input mode, biggest display value is 3200 units
F=1, Wide range display mode, when the value is bigger than 3200 ,chooses this
option
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