Station Number Settings [D8121 And D8421] - Mitsubishi Electric FX3U-232-BD User Manual

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.
9.2.9

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
parameters are stored when the power is turned ON.
In FX (FX), FX
2 2C
power.
In all PLCs except FX
communication port ch1, use D8121.
Set the station number using parameters when using the communication port ch2 in FX
FX PLCs.
3UC
Use D8421 for confirmation.
2. Cautions on use
Do not use both the parameters and station number settings device (D8121) 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
1NC 2N 2NC 3S
and FX PLCs, set the station number using a sequence program, and then turn ON the
0N
, FX , FX and FX
3G 3GC 3U
Contents
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
0N
, FX , FX , FX and FX
3G 3GC 3U
PLCs and in FX , FX
3UC 3G
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
PLCs, the contents set using
3UC
, FX and FX PLCs using
3GC 3U 3UC
, FX , FX
3G 3GC
PLC, set the communication setting
A
B
C
D
E
F
G
H
and
3U
I
Apx.A
D-95