When Control Line Is In Standard Rs-232C Mode [Bfm #0, (B9, B8) = (0, 1)] - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (FX
5.5.2

When control line is in standard RS-232C mode [BFM #0, (b9, b8) = (0, 1)]

Sending/receiving
enable
ON
OFF
(BFM#1 b0)
ON
OFF
DR(DSR)
Sending
command
OFF
(BFM#1 b1)
OFF
RS(RTS)
CS(CTS)
OFF
SD(TXD)
OFF
Send data
Sending
complete
OFF
(BFM#28 b0)
RD(RXD)
Receive data
Receiving
OFF
complete
(BFM#28 b1)
Receiving
OFF
complete flag
The receiving waiting
reset command
status is started.
(BFM#1 b2)
-232IF)
2N
Set this bit to OFF in the sequence
program. While it remains ON, the
next data cannot be sent.
ON
ON
ON
Message 2
Time set by BFM #20
multiplied by 10 ms
* Value set by BFM #21
multiplied by 10 ms
Message 1
ON
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.
* Value set by BFM #21
multiplied by 10 ms
*
Message 4
Time set by BFM #20
multiplied by 10 ms
Message 3
Set this bit to OFF in the
sequence program.
While it remains ON, the next
receiving complete flag reset
command cannot be given.
Set this bit to OFF in the sequence program.
While it remains ON, the next receiving
complete flag reset command cannot be given.
5 Creating Programs
5.5 Operation of Control Line
*
G-31
A
B
C
D
E
F
G
H
I
Apx.A