Mitsubishi Electric FX3U-232-BD - When Control Line Is in Standard RS-232 C Mode [BFM #0, (B9, B8) = (0, 1)]

G-31
FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (FX2N-232IF)
5 Creating Programs
5.5 Operation of Control Line
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter Communication
F
Non-Protocol Communication (RS/RS2 Instruction)
G
Non-Protocol Communication (FX
2N
-232IF)
H
Programming Communication
I
Remote Maintenance
Apx.A
Discontinued models
5.5.2 When control line is in standard RS-232C mode [BFM #0, (b9, b8) = (0, 1)]
Set this bit to OFF in the sequence program.
While it remains ON, the next receiving
complete flag reset command cannot be given.
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
The receiving waiting
status is started.
ON
Message 1
Message 4
Message 2
Message 3
*
* Value set by BFM #21
multiplied by 10 ms
* Value set by BFM #21
Time set by BFM #20
multiplied by 10 ms
Set this bit to OFF in the sequence
program. While it remains ON, the
next data cannot be sent.
After receiving is completed and the received
data is read, set the receiving complete flag
(BFM #28, b1) to OFF using the receiving
complete flag reset command.
Sending/receiving
enable
(BFM#1 b0)
Sending
command
(BFM#1 b1)
Sending
complete
(BFM#28 b0)
RD(RXD)
Receive data
Receiving
complete
(BFM#28 b1)
Receiving
complete flag
reset command
(BFM#1 b2)
DR(DSR)
RS(RTS)
CS(CTS)
SD(TXD)
Send data
multiplied by 10 ms
*
Time set by BFM #20
multiplied by 10 ms
Set this bit to OFF in the
sequence program.
While it remains ON, the next
receiving complete flag reset
command cannot be given.