GE GFK-0804B 用户手册
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Micro PLC Programmer’s Guide – April 1994
GFK-0804B
Logic Operations
The Micro PLC Instruction Set includes these Logic operations:
Word AND
The AND function compares each bit in one register against
each bit in another. If both bits are 1, it places a 1 in the corre-
sponding bit of a third register.
each bit in another. If both bits are 1, it places a 1 in the corre-
sponding bit of a third register.
Inclusive OR
The Inclusive OR function compares each bit in one register
against each bit in another. If either or both bits are 1, it places a
1 in the corresponding bit of a third register.
against each bit in another. If either or both bits are 1, it places a
1 in the corresponding bit of a third register.
Exclusive OR
The XOR function compares each bit in one register against
each bit in another. If both bits are the same (1 or 0), it places a
0 in the corresponding bit of a third register
each bit in another. If both bits are the same (1 or 0), it places a
0 in the corresponding bit of a third register
Shift Register
Right
Right
Shift Register Right shifts all the bits in a register to the right
(toward the least significant bits) by a specified number of
positions.
(toward the least significant bits) by a specified number of
positions.
Shift Register
Left
Left
Shift Register Left shifts all the bits in a register to the rleft (to-
ward the most significant bits) by a specified number of posi-
tions.
ward the most significant bits) by a specified number of posi-
tions.
NOT
The NOT function takes the opposite state of each bit in a regis-
ter and places it into a second register.
ter and places it into a second register.