Mitsubishi FX3U-422-BD - Communication Format Setting [D8370, D8400 and D8420]

F-95
FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
12 Related Data
12.4 Details of Related Devices (RS2 Instruction)
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.
Discontinued models
12.4.9 Communication format setting [D8370, D8400 and D8420]
These devices set the communication format.
1. Detailed contents
These devices can set the data length, parity, baud rate, etc.
When communication port ch0 is used, D8370 sets the communication format.
When communication port ch1 is used, D8400 sets the communication format.
When communication port ch2 is used, D8420 sets the communication format.
The table below shows the contents of the communication format settings. Computer link setting is not
applicable for D8370, D8400.
*1. This setting is available only in FX
3G PLCs.
*2. Make sure to set as "0" when using computer link.
*3. Make sure to set as "0" when using non-protocol communication.
*4. In RS2 instruction, up to four headers and up to four terminators can be set.
*5. The control line is not available in FX
3G PLCs when ch0 is used. Set "(1, 1, 1)".
*6. When executing non-protocol communication using RS2 instruction, add the sum check after the
terminators.
Make sure to set the terminators when adding the sum check.
2. Cautions on use
In FX3G and FX3UC PLCs, the communication format can be set using parameters.
In FX
3G PLCs, the communication format can be set only for ch1 and ch2 using parameters.
Bit No. Name
Contents
0 (bit = OFF) 1 (bit = ON)
b0 Data length 7-bit 8-bit
b1
b2
Parity
b2, b1
(0, 0): Not provided
(0, 1): Odd
(1, 1): Even
b3 Stop bit 1-bit 2-bit
b4
b5
b6
b7
Baud rate
(bps)
b7, b6, b5, b4 b7, b6, b5, b4
(0, 0, 1, 1): 300 (0, 1, 1, 1): 4800
(0, 1, 0, 0): 600 (1, 0, 0, 0): 9600
(0, 1, 0, 1): 1200 (1, 0, 0, 1): 19200
(0, 1, 1, 0): 2400 (1, 0, 1, 0): 38400
*1
b8
*2
Header Not provided
Provided
*4
b9
*2
Terminator Not provided
Provided
*4
b10
b11
b12
Control line
Non-protocol
communica-
tion
*5
b12, b11, b10
(0, 0, 0): Not provided <RS-232C interface>
(0, 0, 1): Standard mode <RS-232C interface>
(0, 1, 0): Interlink mode <RS-232C interface>
(0, 1, 1):Modem mode <RS-232C interface>
(1, 1, 1): Communication in accordance with RS-485
<RS-485/RS-422 interface>
Computer link
b12, b11, b10
(0, 0, 0):RS-485/RS-422 interface
(0, 1, 0): RS-232C interface
b13 Sum check Not added
Added
*6
b14
*3
Protocol Not used Used
b15
Control proce-
dure (CR, LF)
Non-protocol
communica-
tion
CR, LF: Not used
(Format 1)
Non-protocol
communica-
tion
CR, LF: Used
(Format 2)
Computer link
CR, LF: Not used
(Format 1)
Computer link
CR, LF: Used
(Format 4)