11-5
11-1-6.
BCD method
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BCD is the abbreviation for binary-coded decimal code.
•
It specifies each digit of a number as a binary number using program reserve inputs 1, 2, 4 and 8 for the 1st digit, 16, 32,
64 and 128 for the 2nd digit and 256 and 512 for the 3rd digit. It calculates the sum of ‘Program reserve input’ numbers
having been in ON state when the ‘Input strobe’ is turned ON, and then reserves the corresponding program.
You can use the rotary switch of BCD specification sourced locally sold at a store for easy operation.
<Example>
Program reserve input
512
256
128
64
32
16
8
4
2
1
3rd digit
2nd digit
1st digit
200
100
80
40
20
10
8
4
2
1
Sum
Program name
O O O O O O
399 Prog0399.prg
O O O O
226 Prog0226.prg
O
O O
32 Prog0032.prg
O
O
11 Prog0011.prg
O
1 Prog0001.prg
O
........... Input is ON,
(Blank)... Input is OFF
Timing chart
Running output
Program reserve XXX
Reserved output XXX
Output strobe
Start input
Program reserve YYY
Reserved output YYY
Input strobe
Start operation
0.2 s or more
0.1 s or more
About
0.5 s
About
0.2 s
About
0.5 s
About
0.2 s
Prog0ZZZ.prg is selected.
Prog0YYY.prg is selected.
•
“XXX” and “YYY” indicate ‘program reserve’ numbers you specified (001,002,004,008,016,032,064,128,256 or 512).
•
“ZZZ” is the sum of “XXX” and “YYY”. The above example is of 2 ‘program reserve’ inputs which are turned ON,
however, ON/OFF status of all ‘program reserve’ inputs (001,002,004,008,016,032,064,128,256 and 512) are checked
for calculation.
•
The input signal must be kept ON for 0.2 seconds or more.
•
‘Start input’ may not be received if it is input in less than 0.2 seconds after the previous input is received.
•
It requires at least 0.1 second after the ‘Output strobe’ signal is turned OFF to reserve the next ‘program reserve’ input.
•
After the completion of the current program, the robot automatically starts the next reserved program if any.