Communication Format (D8120) - Mitsubishi Electric MELSEC FX Series User Manual

FX communication
6.3

Communication Format (D8120)

Bit
Name
No.
b0 Data length
b1
Parity
b2
b3 Stop bit
b4
b5 Baud
b6 rate(bps)
b7
*1
Header
b8
*1
Terminator
b9
b10
Control
b11
line
b12
*2
Sum check
b13
*2
Protocol
b14
Transmission
*2
control
b15
protocol
*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
0 (bit = OFF)
7 bit
(b2, b1)
( 0, 0) : None
( 0, 1) : Odd
( 1, 1) : Even
1 bit
(b7, b6, b5, b4)
( 0, 0, 1, 1) : 300
( 0, 1, 0, 0) : 600
( 0, 1, 0, 1) : 1,200
( 0, 1, 1, 0) : 2,400
None
None
(b12, b11, b10)
( 0, 0,
( 0, 0,
No
( 0, 1,
protocol
( 0, 1,
( 1, 0,
(b12, b11, b10)
Computer
( 0, 0,
link
( 0, 1,
Sum check code is not added
No protocol
Protocol format 1
Description
(b7, b6, b5, b4)
( 0, 1, 1, 1) : 4,800
( 1, 0, 0, 0) : 9,600
( 1, 0, 0, 1) : 19,200
Effective (D8124) Default : STX (02H)
Effective (D8125) Default : ETX (03H)
0) : No use <RS-232C interface>
1) : Terminal mode <RS-232C interface>
0) : Interlink mode <RS-232C interface > (FX
more)
1) : Normal mode 1 <RS-232C interface>,
<RS-485 (RS-422) interface>*3
1) : Normal mode 2 <RS-232C interface> (FX, FX
0) : RS-485 (RS-422) interface
0) : RS-232C interface
Sum check code is added automatically
, FX , FX
0N 1S 1N
Communication format 6
1 (bit = ON)
8 bit
2 bit
2N
Dedicated protocol
Protocol format 4
, FX , FX series.
2N 2NC
V2.00 or
only)
2C
6-2