Delta AH500 - Page 236

AH500 Programming Manual
6-31
API Instruction code Operand Function
0059~
0064
CMPT※
P
S
1
, S
2
, n, D
Comparing the tables
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
S
1
          
S
2
        
n











D








Pulse instruction 16-bit instruction (9 steps) 32-bit instruction
AH500 AH500
－
Symbol:
S
1
：
Source device 1 Word
S
2
：
Source device 2 Word
n
：
Data length Word
D
：
Comparison result Bit
Explanation:
1. The instruction is used to compare n pieces of data in devices starting from S
1
with those in
devices starting from S
2
. The values compared are signed decimal numbers, and the
comparison results are stored in D.
2. The operand n should be within the range between 1 and 256.
3. The value which is written into the operand D is a one-bit value.
4. When the results gotten from the comparison by using the instruction CMPT# are that all
devices are ON, SM620 is ON. Otherwise, SM620 is OFF.
5. If the operand S
1
is a device, the comparison will be as shown below.
S1
+1
+2
Comparison sign
+3
+(N-2)
S1
S1
S1
S1
+(N-1)
S1
~
n
S2
+1
+2
+3
+(N-2)
S2
S2
S2
S2
+(N-1)
S2
~
n
1234(BIN)
5678(BIN)
5000(
BIN)
1000(BIN)
10(BIN)
90(BIN)
1111(BIN)
2222(BIN)
3333(BIN)
4444(BIN)
8888(BIN)
9999(BIN)
D
+1
+2
+3
+(N-2)
D
D
D
D
+(N-1)
D
~
1
1
1
0
0
0
>
Comparison result
6. If the operand S
1
is a constant within the range between -32768 and 32767, the comparison
will be as shown below.
Compariosn sign
S2
+1
+2
+3
+(N-2)
S2
S2
S2
S2
+(N-1)
S2
~
n
3333(BIN)
1111
(BIN)
2222(BIN)
3333(BIN)
4444(BIN)
8888(BIN)
9999(BIN)
D
+1
+2
+3
+(N-2)
D
D
D
D
+(N-1)
D
~
0
0
1
0
0
0
=
Comparison result
S1
7. The corresponding comparison operation results of the instructions are listed below.