Eaton ELC-PB, Руководство по программированию

Страница: 585 / 728

E L C P r o g r a m m i n g M a n u a l
F o r m o r e i n f o r m a t i o n v i s i t : w w w. e a t o n . c o m M N 0 5 0 0 3 0 0 3 E
3 - 4 1 6
API Mnemonic Operands Function
168 D MVM P S
1
, S
2
, D Masked Move
Bit Devices Word devices Program Steps Type
OP
X Y M S K H KnX KnY KnM KnS T C D E F
S
1
* * * * * * * * *
S
2
* * * * * * * * * * *
D * * * * * * * * *
MVM, MVMP: 7 steps
DMVM, DMVMP: 13
steps
ELC ELCB ELCM
PB PC/PA/PH PV PB PH/PA
32 16 P 32 16 P 32 16 P 32 16 P 32 16 P
Operands:
S
1
: Source address 1 S
2
: Bits to be masked (OFF) D : Source device 2 / Operation results
[ D = ( S
1
& S
2
) | ( D & ~ S
2
)]
Description:
1. This instruction performs a move with mask operation. This means that data is moved bit by bit
from S
1
through the mask S
2
to D. Bit data will be moved from S
1
to D only where there is a
logical 1 in that position in the mask.
2. Where there is a logical 1 in the mask, data is passed. Where there is a logical 0 in the mask,
the data is blocked, i.e. the destination bit is unaffected.
3. MVM is the new instruction for V1.6 of ELC-PV series model.
Program Example:
When X0 = ON, the MVM instruction moves the data from D0 to D4 bit by bit, only allowing bit data
to be passed where there is a logical 1 in the mask. The bit positions where there is a logical 0 in the
mask leaves the destination bit position unaffected. The value in D4 prior to executing the MVM
instruction is: 1000110001101010.
MVM
X0
D0 HFF00 D4
0 1 1 0 1 0 1 1 0 1 1 0 1 0 0
1 1 1 1 1 1 0 0 0 0 0 1 1 0 0 0
b15 b0
D0
Mask
D4
0 1 1 0 1 0 0 1 1 1 1 0
0 0
Note: The low 8 bits of D4 are unchanged. The high 8 bits of D0 are moved to the high 8 bits of
D4.