4 - 5 4 - 5
MELSEC-A
4 SETUP AND PREPARATION BEFORE OPERATION
Number
Name and
appearance
Description
Setting
Switches
Set Value
4 2 1
Transmission Speed
0
OFF
OFF
OFF
156kbps
1
OFF
OFF
ON
625kbps
2
OFF
ON
OFF
2.5Mbps
3
OFF
ON
ON
5.0Mbps
4
ON
OFF
OFF
10Mbps
5)
Transmission
speed setting
switches
1
2
4
B
RA
TE
ON
Always set the transmission speed within the above range.
The switches are all factory-set to OFF.
Making any other setting than the above will result in an error flickering the "L ERR." LED.
Confirm the transmission speed setting switch numbers on the seal located on the side face of the connector
for analog I/O.
Use the switches in STATION NO. "10", "20" and "40" to set the tens of the station number.
Use the switches in STATION NO. "1", "2", "4" and "8" to set the units of the station number.
The switches are all factory-set to OFF.
Always set the station number within the range 1 to 64.
Setting any other number than 1 to 64 will result in an error, flickering the "L ERR." LED.
You cannot set the same station number to two or more stations.
Tens
Units
Station
Number
40 20 10 8 4 2 1
1
OFF OFF OFF OFF OFF OFF ON
2
OFF OFF OFF OFF OFF ON OFF
3
OFF OFF OFF OFF OFF ON ON
4 OFF
OFF
OFF
OFF ON OFF
OFF
10 OFF OFF ON OFF OFF OFF OFF
11 OFF OFF ON OFF OFF OFF ON
64 ON ON OFF OFF ON OFF OFF
(Example) To set the station number to "32", set the switches as indicated below.
Tens
Units
Station
Number
40 20 10 8 4 2 1
32 OFF ON ON OFF OFF ON OFF
6)
Station number
setting switches
ST
ATION
NO.
1
2
4
81
0
20
40
ON
Confirm the station number setting switch numbers on the seal located on the side face of the connector for
analog I/O.
7)
One-touch
connector for
communication
A one-touch connector for connection of the communication line
When carrying out wiring, connect two optional one-touch connector plugs for communication at top and
bottom.
8)
One-touch
connector for
power supply
and FG
A one-touch connector for connection of the module power supply line and FG.
When carrying out jumper wiring, connect two optional one-touch connector plugs for power supply/FG at top
and bottom.
9)
One-touch
connector for
analog I/O
One-touch connector for analog I/O
Connect a one-touch connector plug when wiring.
10)
DIN rail hook
Used to mount the module to the DIN rail.
POINT
After power-on, do not change the mode select switch setting.
If you change it midway during operation, the setting at power-on is valid.
