Advanced Function Instruction
7-30
FUN55 D P
B→G
BINARY - CODE TO GRAY - CODE CONVERSION
FUN55 D P
B→G
S :
ENOperation control
Ladder symbol
55DP.B G
D :
S ：Starting of source
D ：Starting address of destination
S，D operand can combine V、Z、P0~P9 for index
addressing
WX WY WM WS TMR CTR HR IR OR SR ROR DR K XR
Range
Ope-
rand
WX0
∣
WX240
WY0
∣
WY240
WM0
∣
WM1896
WS0
∣
WS984
T0
∣
T255
C0
∣
C255
R0
∣
R3839
R3840
∣
R3903
R3904
∣
R3967
R3968
∣
R4167
R5000
∣
R8071
D0
∣
D4095
0~FFFFH
0~FFFFFFFFH
V、Z
P0~P9
S ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
D ○ ○ ○ ○ ○* ○ ○
● When operation control "EN"=1 or "EN↑"( P instruction) changes from 0→1, it will perform the code conversion; where S
is the source (Binary code), and D is the destination (Gray code) for storing the result.
● The conversion method shown as below
1100100 011101101
XOR XORXORXORXORXORXORXOR XORXORXORXORXORXORXOR
1101001 010011011
Example 1: When M0 changes from 0→1, it will perform the 16-bit code conversion
EN
S :
D :
M0
55P.B G
R0
R100
˙
Converting the 16-bit Binary-code in R0 into Gray-code, and
then storing the result into R100.
R0＝ 1001010101010011B Î R100＝ 1101111111111010B
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