Comparison Instruction - Panasonic FP7 User Manual

7.5 Comparison Instruction

7.5.1 Block Comparison (BCMP)
Compares two areas that blocks are specified in bytes.
 Instruction format
R0
 Operation unit (i)
• There is no operation unit.
 List of operands
Operand Description
Specify control data. (Settable range: 0 to 3)
S1
Specify the size of comparison blocks in bytes. (Settable range: 1 to 4096)
S2
Starting address (device address) of comparison block 1
S3
Starting address (device address) of comparison block 2
S4
 Available devices (●: Available)
16-bit device
Operand
WX WY WR
S1 ● ● ●
S2 ● ● ●
S3 ● ● ●
S4 ● ● ●
 Processing
• Compares the comparison block 1 specified by [S3] and the comparison block 2 specified by
[S4] for the number of bytes specified by [S2] according the control data specified by [S1],
and outputs the result to the system relay SB (=flag).
BCMP
WL WS SD DT LD UM
● ● ●
● ● ●
● ● ●
● ● ●
H0 U5
S1 S2
32-bit
Integer
device
TS TE
WI WO IX K
CS CE
7.5 Comparison Instruction
DT1 DT10
S3 S4
Real
num- String
ber
U H SF DF " "
● ●
● ●
Index
modifier
●
●
●
●
7-27