Installation manual

Publication 1747-RM001G-EN-P - November 2008
5-18 Data Handling Instructions
Masked Move (MVM)
The MVM instruction is a word instruction that moves data from a source
location to a destination, and allows portions of the destination data to be
masked by a separate word. As long as the rung remains true, the instruction
moves the data each scan.
Entering Parameters
Enter the following parameters when programming this instruction.
• Source is the address of the data you want to move
• Mask is the address of the mask through which the instruction moves
data; the mask can also be a hexadecimal value (constant)
• Destination is the address where the instruction moves the data
Updates to Arithmetic Status Bits
The arithmetic status bits are found in Word 0, bits 0 to 3 in the controller
status file. After an instruction is executed, the arithmetic status bits in the
status file are updated.
Table 5.7 Controller Function
With this Bit The Controller
S:0/0 Carry (C) always resets.
S:0/1 Overflow (V) always resets.
S:0/2 Zero (Z) sets if result is zero; otherwise resets.
S:0/3 Sign (S) sets if result is negative (most significant bit is set); otherwise
resets.
MVM
Masked Move
Source N7:68
0<
Mask 7FFFh
32767<
Dest N7:67
0<
MVM
Output Instruction
Fixed SLC
5/01
SLC
5/02
SLC
5/03
SLC
5/04
SLC
5/05
• •••••
Table 5.8 Controller Function
With this Bit The Controller
S:0/0 Carry (C) always resets.
S:0/1 Overflow (V) always resets.
S:0/2 Zero (Z) sets if result is zero; otherwise resets.
S:0/3 Sign (S) sets if result is negative; otherwise resets.