AD-4405A Weighing Indicator Page 39
10. Comparison
This function has the "upper / lower comparison", the "5-stage (HiHi / Hi / OK / Lo /
LoLo) comparison", the "setpoint comparison" and the "simple batch". They compare
the weight data with preset parameters and can output the result of the comparison to
the display and buzzer, also to the relay-outputs of OP-03, OP-05 and OP-08.
Set the F-functions f22 and f23 to use the "upper / lower comparison", the "5-stage
(HiHi / Hi / OK / Lo / LoLo) comparison" (these two comparison methods will be
combined and hereafter be called the "Weight check mode"), and f22 through f26 to
use the "setpoint comparison" and the "simple batch".
Data is stored in non-volatile memory and is not lost even if power is turned off.
Code memory can be selected by key switch, external control input, or a command
via the serial interface. Refer to “16.3. Command Format”.
10.1. Weight Check Mode
This function compares the weight data with the upper and lower limit values (upper/lower
limit comparison) or four limit values of HiHi, Hi, Lo and LoLo (5-stage comparison), and
displays, sounds the buzzer and outputs the results to the three relays of HI, OK and LO.
Use this comparison when judging whether a weight is proper.
Set the F-function f22 to 1, 2 or 3 to use upper/ lower limit comparison and f22 to 4, 5
or 6 to use 5-stage comparison.
Select a parameter of the F-function f23 for the comparison condition.
Set the F-function f26 (zero band) if f23 is set to 10 (not to compare in the zero band).
Specify the upper and lower limit / HiHi, Hi, Lo, LoLo limit values.
When entering the limit value(s), it is not necessary to enter the F-function f22 and
f23 again unless comparison conditions are changed.
There are 3 type of setting values for each comparison.
(1) Set the limit value (upper and lower limit / HiHi, Hi, Lo, LoLo limit).
(2) Set the Target value and an acceptable tolerance (upper and lower) in weight.
The limit value is calculated automatically.
(3) Set the Target value and an acceptable tolerance (upper and lower) in
percentage of the target weight. The limit value is calculated automatically.
Example. Target = 50 kg, Upper limit = 51 kg, Lower limit = 48 kg
(1) Hi (Upper limit): 51 (kg), Lo (Lower limit): 48 (kg)
(2) TG (Target): 50 (kg), Hi (Upper acceptable tolerance): 1 (kg),
Lo (Lower acceptable tolerance): 2 (kg) not a negative value
(3) TG (Target): 50 (kg), Hi (Upper acceptable tolerance): 2 (% of Target), Lo
(Lower acceptable tolerance): 4 (% of Target) not a negative value
10. Comparison
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