Mitsubishi Electric MELSEC FX Series - Communication Format (D8120)

FX communication
Communication format 6
6-2
6.3 Communication Format (D8120)
*1 Make sure to set to “0” when computer link used.
*2 Make sure to set to “0” when no protocol communication used.
*3 When using RS-485 (RS-422) interface, make setting control line the same as this. But control
line of communication is the same as when not using control line operation.
This connection (RS-485) is supported in the FX
0N
, FX
1S
, FX
1N
, FX
2N
, FX
2NC
series.
Bit
No.
Name
Description
0 (bit = OFF) 1 (bit = ON)
b0 Data length 7 bit 8 bit
b1
b2
Parity
(b2, b1)
( 0, 0) : None
( 0, 1) : Odd
( 1, 1) : Even
b3 Stop bit 1 bit 2 bit
b4
b5
b6
b7
Baud
rate(bps)
(b7, b6, b5, b4) (b7, b6, b5, b4)
( 0, 0, 1, 1) : 300 ( 0, 1, 1, 1) : 4,800
( 0, 1, 0, 0) : 600 ( 1, 0, 0, 0) : 9,600
( 0, 1, 0, 1) : 1,200 ( 1, 0, 0, 1) : 19,200
( 0, 1, 1, 0) : 2,400
b8
*1
Header None Effective (D8124) Default : STX (02H)
b9
*1
Terminator None Effective (D8125) Default : ETX (03H)
b10
b11
b12
Control
line
No
protocol
(b12, b11, b10)
( 0, 0, 0) : No use <RS-232C interface>
( 0, 0, 1) : Terminal mode <RS-232C interface>
( 0, 1, 0) : Interlink mode <RS-232C interface > (FX
2N
V2.00 or
more)
( 0, 1, 1) : Normal mode 1 <RS-232C interface>,
<RS-485 (RS-422) interface>*3
( 1, 0, 1) : Normal mode 2 <RS-232C interface> (FX, FX
2C
only)
Computer
link
(b12, b11, b10)
( 0, 0, 0) : RS-485 (RS-422) interface
( 0, 1, 0) : RS-232C interface
b13
*2
Sum check Sum check code is not added Sum check code is added automatically
b14
*2
Protocol No protocol Dedicated protocol
b15
*2
Transmission
control
protocol
Protocol format 1 Protocol format 4