Communication Format <Bfm#0; Command - Mitsubishi Electric MELSEC FX Series User Manual

FX communication
10.2.2 Communication Format <BFM#0>
Bit Description
b0 Data length
b1
Parity
b2
b3 Stop bit
b4
b5
Baud rate (bps)
b6
b7
b8
Control line
b9
b10
Addition of CR and LF
b11
Availability of check
b12
sum and ASCII/HEX
b13
conversion
Send/receive buffer
b14
data length
b15 Unused
The communication format is determined on the rising edge of the send/receive enable
command (BFM #1 b0).
Accordingly, the communication format setting should be preliminary transferred using the TO
instruction before BFM #1 b0 is turned ON. Also, the send header and terminator are determined
by the rising edge of the send command (BFM #1 b1). The receive header and the receive
terminator are determined on the rising edge of BFM #1 b0 or on the rising edge of the receive
completion reset command (BFM #1 b2). Accordingly, when only the header and the terminator
are exclusively changed it is not necessary to turn BFM #1 b0 OFF. The change becomes valid
form the next send/receive operation.
0
7 bit
b1
(00) : None
(01) : Odd
(11) : Even
1 bit
b4
(0011) : 300
(0100) : 600
(0101) : 1200
(0110) : 2400
(0111) : 4800
(1000) : 9600
(1001) : 19200
b8
(00) : Unused
(01) : Standard RS-232C
(11) : RS-232C interlink connection mode
b10
(00) : Not added
(01) : CR only
(11) : CR and LF
b12
(00) : Not available
(01) : ASCII/HEX conversion available
(10) : Check sum available
(11) : Check sum available, ASCII/HEX conversion
available
16 bit
1
8 bit
2 bit
8 bit

FX -232IF 10
2N
Initial value
1 : 8 bit
(11) : Even
0 : 1 bit
(1000) : 9600 bps
(00) : Unused
(00) : Not added
(00) : Not available
0 : 16 bit
0 : Unused
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