Communication Format Setting [D8120] - Mitsubishi FX3U-USB-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)

12.2.9 Communication format setting [D8120]

This device sets the communication format.
1. Detailed contents
This device can set the data length, parity, baud rate, etc.
The table below shows the contents of the communication format setting.
Bit No.
b0
b1
b2
b3
b4
b5
b6
b7
b8
b9
b10
b11
b12
*2
b13
*2
b14
*2
Control procedure
b15
*1. This setting is available only in FX
*2. Make sure to set as "0" when using non-protocol communication.
*3. When using the RS-485/RS-422 interface, only FX
and FX
3UC
2. Cautions on use
In all PLCs except FX
When setting the communication format in FX
backed) device (M8120) to ON.
12.2.10 Amount of remaining send data [D8122]
This device stores the amount of remaining send data.
1. Detailed contents
This device stores the amount of remaining send data in 8-bit (1 byte) units.
Only data in communication frames are regarded as targets of counting.
F-88
Name
Data length
b2, b1
(0, 0): Not provided
Parity
(0, 1): Odd
(1, 1): Even
Stop bit
b7, b6, b5, b4
(0, 0, 1, 1): 300
Baud rate
(0, 1, 0, 0): 600
(bps)
(0, 1, 0, 1): 1200
(0, 1, 1, 0): 2400
Header
Terminator
b11, b10
(0, 0): Not provided <RS-232C interface>
Non- (0, 1): Standard mode <RS-232C interface>
protocol (1, 0): Interlink mode <RS-232C interface>
commu-
nication FX
Control line
(1, 1): Modem mode
<RS-232C interface, RS-485/RS-422 interface
Com- b11, b10
puter (0, 0): RS-485/RS-422 interface
link (1, 0): RS-232C interface
Sum check
Protocol
PLCs are applicable.
(FX), FX , and FX
2 2C
Contents
0 (bit = OFF)
7-bit
1-bit
b7, b6, b5, b4
(0, 1, 1, 1): 4800
(1, 0, 0, 0): 9600
(1, 0, 0, 1): 19200
(1, 0, 1, 0): 38400
Not provided
Not provided
(FX whose version is Ver. 2.00 or later, FX
2N
)
3UC
Not applicable
Not added
Not used
Format 1
PLCs.
3G
, FX
1S 0N
PLCs, the communication format can be set using parameters.
0N
PLCs, set the communication setting latched (battery
0N
12.2 Details of related devices (RS instruction)
1 (bit = ON)
8-bit
2-bit
*1
Provided (D8124) Initial value: STX (02H)
Provided (D8125) Initial value: ETX (03H)
, FX
3G
*3
>
Added
Used
Format 4
, FX , FX , FX , FX
1N 2N 3G 3U
12 Related Data
, FX , and
3U 2NC
, FX , FX ,
1NC 2NC