Mitsubishi Electronics Mitsubishi Digital Electronics Video Gaming Accessories FX3G ユーザーズマニュアル
471
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
16 External FX Device – FNC 80 to FNC 89
16.8 FNC 87 – RS2 / Serial Communication 2
11
FN
C
C
30
-FN
C
C
39
R
otati
on and
on and
Shi
ft
ft
12
FNC4
0-F
0-F
NC4
9
D
ata O
per
ati
per
ati
on
13
FN
C
C
50-FN
C
59
H
igh S
pe
ed
P
rocessing
14
FM
C
C
60-FN
C
69
H
andy
In
st
ru
ct
ion
15
FNC7
0-F
0-F
NC7
9
Ex
ter
nal FX
I/O
D
evice
16
FN
C
C
80-FN
C
89
Ext
ernal
FX
ernal
FX
De
vic
vic
e
17
FN
C
100-
FN
FN
C
10
9
Da
ta
Transf
er 2
er 2
18
FN
C
110-
FN
FN
C
139
Floati
ng Poi
nt
19
FN
C
14
0-F
N
C
149
Da
ta
O
per
at
at
ion 2
20
FN
C
150-
FN
FN
C
159
Posit
ioning
C
ont
ro
ro
l
16.8
FNC 87 – RS2 / Serial Communication 2
Outline
This instruction sends and receives data in no-protocol communication by way of serial ports in accordance with
RS-232C or RS-485 provided in the main unit.
In FX
RS-232C or RS-485 provided in the main unit.
In FX
3G
PLCs, data can be sent and received in no-protocol communication by way of the standard built-in port
(RS-422).
1. Instruction format
2. Set data
*1.
Ch2 is not available in 14-point and 24-point type FX
3G
PLCs.
Ch0 is available only in FX
3G
PLCs.
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (RS2)
This instruction sends and receives data in no-protocol communication by way of serial ports in accordance with
RS-232C or RS-485 provided in the main unit.
RS-232C or RS-485 provided in the main unit.
→ For detailed explanation, refer to the Data Communication Edition.
Operand type
Description
Data type
Head device of data registers storing data to be sent
16-bit binary or
character string
m
Number of bytes of data to be sent [setting range: 0 to 4,096]
16-bit binary
Head device of data registers storing received data when receiving is completed
16-bit binary or
character string
n
Number of bytes to be received [setting range: 0 to 4,096]
16-bit binary
n1
Used channel number [contents of setting: K0 = ch 0, K1 = ch 1, K2 = ch 2]
*1
16-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
3 3
3
m
3 3
3 3
3 3
3
n
3 3
3 3
n1
3 3
FNC 87
RS2
−
Mnemonic
Operation Condition
16-bit Instruction
11 steps RS2
Mnemonic
Operation Condition
Continuous
Operation
32-bit Instruction
S
1
S
D
S
1
S
S
2
D
FNC 87
RS2
m
S
Command
input
D
n
n1