Communication Format Setting [D8120] - Mitsubishi Electric FX3U-232-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
*3
b13
*3
b14
*3
Control procedure
b15
*1. This setting is available only in FX
*2. When using the RS-485/RS-422 interface, only FX
FX , FX
3GC
*3. Make sure to set as "0" when using non-protocol communication.
2. Cautions on use
• In all PLCs except FX
parameters.
• Even if the communication format is changed while the RS instruction is being driven, it is not reflected.
• When setting the communication format in FX
backed) device (M8120) to ON.
12.2.10 Remaining amount of data to be sent [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-94
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
Control line
(1, 1): Modem mode
Com- b11, b10
puter (0, 0): RS-485/RS-422 interface
link (1, 0): RS-232C interface
Sum check
Protocol
and FX PLCs are applicable.
3U 3UC
(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 PLC Ver. 2.00 or later, and FX
2N
FX , FX PLCs)
3U 3UC
<RS-232C interface, RS-485/RS-422 interface
Not applicable
Not added
Not used
Format 1
, FX , FX , FX and FX
3S 3G 3GC 3U
, FX
0N 1S
PLCs, the communication format can be set using
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
2NC
*2
>
Added
Used
Format 4
PLCs.
3UC
, FX , FX , FX , FX
1N 1NC 2N
12 Related Data
, FX , FX ,
3S 3G 3GC
, FX , FX ,
2NC 3S 3G