Mitsubishi FX3U-232-BD User Manual page 287

FX Series PLC User's Manual - Data Communication Edition
Computer Link
• Contents of D8420
Bit No.
b0 Data length
b1
b2
b3
b4
b5 Baud rate
b6
b7
b8
b9 Terminator
b10
b11 Control line
b12
b13 Sum check
b14 Protocol
b15
procedure
2. Cautions on use
Do not use both the parameters and communication format setting devices (D8120 or D8420) at the same
time. If the communication format is set using both methods at the same time, priority is given to the setting
using parameters.
When setting the communication format device (D8120) in an FX
latched (battery backed) device (M8120) to ON.
When using computer link, make sure to set the header (b8) and terminator (b9) to "not provided". And set the
protocol (b14) to "used".
If the communication format is set using the special data register, the setting becomes valid when the power
is turned ON after the setting is written to the special data register.
9.2.10 Station number settings [D8121 and D8421]
These devices set the station number in computer link.
1. Detailed contents
Set the station number of each PLC used in computer link. The applicable setting range is from 0 to 15 (from
H00 to H0F).
In FX , FX , FX
1S
1N
when the power is turned ON.
In FX FX (FX), and FX
0N, 2
power.
In all PLCs except FX
D8121.
Set the station number using parameters when using the communication port ch2 in FX
Use D8421 for confirmation.
2. Cautions on use
Do not use both the parameters and station number settings device (D8121 or D8421) at the same time. If the
station number is set using both methods at the same time, priority is given to the setting using a parameter.
When setting the station number settings device (D8121) in an FX
latched (battery backed) device (M8120) to ON.
Name
0 (bit = OFF)
b2, b1
(0, 0): Not provided
Parity
(0, 1): Odd
(1, 1): Even
Stop bit
b7, b6, b5, b4
(0, 0, 1, 1): 300
(0, 1, 0, 0): 600
(bps)
(0, 1, 0, 1): 1200
(0, 1, 1, 0): 2400
Header Not provided
Not provided
Com- b12, b11, b10
puter (0, 0, 0): RS-485/RS-422 interface
link (0, 1, 0): RS-232C interface
Not added
Not used
Control
Format 1
, FX , FX , FX
2N 3U 1NC 2NC
PLCs, set the station number using a sequence program, and then turn ON the
2C
and FX PLCs and in FX
3U 3UC
Contents
7-bit
1-bit
b7, b6, b5, b4
(0, 1, 1, 1): 4800
(1, 0, 0, 0): 9600
(1, 0, 0, 1): 19200
0N
and FX PLCs, the contents set using parameters are stored
3UC
and FX PLCs using communication port ch1, use
3U 3UC
0N
9 Related Data
9.2 Details of Related Devices
1 (bit = ON)
8-bit
2-bit
Provided
Provided
Added
Used
Format 4
PLC, set the communication setting
and FX
3U 3UC
PLC, set the communication setting
A
B
C
D
E
F
G
H
PLCs.
I
Apx.
D-85