2
3.2 Wiring
Use twisted pair cables with shield.
Recommended cable: UL2464, UL2448, etc.
The total extension length of the cable is up to 500m. A master station and up to 255 units of
the SE series can be connected per line.
Both ends of the cable should be connecting with terminate resistors 100 1/2W.
The shield wire of the cable should be grounded at one place on the master station unit side.
4. SETTING OF COMMUNICATION CONDITION
In order that the master station and SE series can correctly communicate,
following settings are required.
All communication condition settings of the master station are the same as those of SE
series.
All SE series connected on a line are set to address (ADDR), which are different from each
other.
4.1 Set Items
The parameters to be set are shown in the following table. Set them by operating the front
panel keys.
Parameter Item
Value
at
delivery
Setting range
Remarks
BAUD Transmission
speed
9600
2400/4800/9600/19200
---------
Data length
8 bits
Fixed (can’t be changed)
---------
Stop bit
2 bit
Fixed (can’t be changed)
--------- Parity
setting None
Fixed (can’t be changed)
Set the same
communication
condition to the
master station and all
slave station.
ADDR Address
1
1 to 255
Set a different value
to each station.
4.2 Setting Operation Method
The following example shows how to set the communication condition.
Example: Setting a transmission speed is 9600 bps and address at 12 on a station.
Key
operation
Indication Description
Power ON
25/100
Power on running state (PV/SP indication)
SET
(5 seconds)
PB
Press SET key simultaneously for approximately 5
seconds to get level parameter.
SET
(5 seconds)
TYPE
Press SET key simultaneously for approximately 5
seconds to get level parameter.
SET
Press SET key to go into level.
SET
ADDR
Press SET key repeatedly until ADDR is display.
△
or
▽
ADDR/12
Press
△
or
▽
key to setting “ADDR=12”
SET
BAUD
Press SET key again to select next parameter “BAUD”
△
or
▽
BAUD/9.6K
Press
△
or
▽
key to setting “BAUD=9.6K”
