Mitsubishi Electronics FX3G User Manual
581
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
22 External Device – FNC170 to FNC179
22.1 FNC170 – GRY / Decimal to Gray Code Conversion
21
FNC160
-F
NC1
69
69
R
eal
T
T
ime C
lock
C
ontrol
22
FNC17
0-F
NC
179
179
E
xternal D
evice
23
FNC
180
Alternate
Instructions
24
FN
C181-
FNC18
9
O
thers
25
FNC190
-F
NC1
99
99
Bl
oc
k D
ata
ata
Op
er
er
ation
26
FNC20
0-F
NC209
C
har
ac
te
r S
trin
g
Con
tro
tro
l
27
FNC2
10-
FNC21
10-
FNC21
9
Dat
a
a
Operati
on 3
28
FNC220
-F
NC2
49
49
Da
ta
C
omp
ari
ari
son
29
FNC25
0-F
N
C
269
D
ata T
abl
e
e
Operation
30
FNC2
70-
FNC276
FNC276
Ex
-Dev
ice
22.1
FNC170 – GRY / Decimal to Gray Code Conversion
Outline
This instruction converts a binary value into a gray code, and transfers it.
1. Instruction format
2. Set data
3. Applicable devices
S
1: This function is supported only in FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLCs.
S
2: This function is supported only in FX
3U
/FX
3UC
PLCs.
Explanation of function and operation
1. 16-bit operation (GRY and GRYP)
-
can store a value from 0 to 32767.
2. 32-bit operation (DGRY and DGRYP)
- A binary value can be converted into a gray code of up to 32 bits.
-
-
can store a value from 0 to 2,147,483,647.
Caution
The data conversion speed depends on the scan time of the PLC.
Operand Type
Description
Data Type
Conversion source data or word device storing conversion source data
16- or 32-bit binary
Word device storing data after conversion
16- or 32-bit binary
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D .b KnX KnY KnM KnS T C D
R
U \G
V Z Modify K H
E
" "
P
S1
S2
S1
S2
DGRY
DGRYP
DGRYP
Mnemonic
Operation Condition
P
FNC 170
GRY
D
16-bit Instruction
5 steps
GRY
GRYP
GRYP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
S
D
S
D
BIN 1234
1
1
0
1
1
1
0
1
0
1
1
0
0
1
0
0
1
0
1
1
0
0
1
0
0
0
0
0
b0
b15
This instruction converts and transfers data from
the source (binary) to the destination (gray code).
the source (binary) to the destination (gray code).
FNC170
GRY
Y23
Y20 Y17
Y10
GRY 1234
When is K1234 and is K3Y10
Command
input
D
S
S
D
S
S