Mitsubishi Electric MELSEC FX Series User Manual page 104

FX communication
Operating Conditions and Format Set Content
The programmable controller can change from using no protocol communication to programming
protocol (and back) by manipulating the RS instruction and Register D8120 and shown below.
1 ) With the RS instruction ON, move the data options shown below into the Register D8120 to
use no protocol communication.
Table: Set communication format (D8120)
Item
Data length
Parity bit
Stop bit
Baud rate (bps)
Header
Terminator
2 ) To use programming protocol, turn the RS instruction OFF and move the data H0000 into the
communication format Register D8120. When the programmable controller is taken out of
RUN mode (by FX-PCS/WIN-E Software or the front panel switch), complete editing and
program downloads can be accomplished. On line changes can be performed with the
programmable controller in Run Mode.
Example of changing the communication format (D8120) between H0086 and H0000. The
programmable controller is first set for no protocol communication using the RS instruction.
X0
X0
H0086 H0186
Even number (EVEN)
Off On
Off
FNC 12
H0086 D8120
MOV P
FNC 80
D0 K1 D1 K1
RS
FNC 12
H0000 D8120
MOV P
Content
H0286
7 Bit
1 Bit
9600 bps
Off
On
RS instruction 9
H0386
On
9-2