[SM-P00049-A]
―
21
―
PRODUCT
１
(2) Setting switch sets the valve slave station number and transmission speed. (Refer to
“Chapter 3. Operation”.) Be sure to set it before turning power to valve slave station ON.
Set the switch always with the serial transmission unit block
power
“
OFF
”
.
The serial transmission unit block cover can be opened and closed
at one touch.
Except when the switch is set, be sure to keep the cover closed;
otherwise, foreign matter may intrude into the internal circuit part
from the cover unit, thus resulting in failure or malfunctioning, and
also causing damage to the cover.
Even during setting, take special care so that foreign matter or
particle does not enter the interior.
The setting switch is precision made; rough handling may, there-
fore, cause damage thereto. Also absolutely avoid touching the
internal circuit board during setting.
There are terminal blocks provided on the mounting device. Wiring connection to sta-
tion is accomplished through these terminal blocks. Function of each terminal is
printed on the face of station mounting device.
Choose 6.6mm wide or less of M3 crimp type terminal metal piece and tighten it
with torque of 0.3 to 0.5N
･
m.
0V
24V
DA
DG
N
･
C
Valve
0V
24V
DB
SLD
(FG)
Unit
Terminal symbols and functions
Symbol
Function
Major objects to be connected
DA
DB
DG
Data terminal
Connect them with the data terminals (DA, DB, and DG) of the master
station or of a remote I/O or remote device station.
SLD
Shield terminal
Connect with the shielding in the shielded twist pair cable. (
※
1)
N
・
C
Not used
Do not use this terminal.
(FG)
Ground terminal
Ground this terminal without fail (independent grounding for the PLC
system only; grounding resistance 100 ohms or less). (
※
1)
0V
Power for
Unit
24V
Power for Units
Apply source of power with less noise, such as DC24V
±
10%.
0V
Power for
Valves
24V
Power for Valves
Apply source of power with less noise, such as DC24V
±
10%.
※
1 : SLD and FG terminals are connected inside the slave station unit.
(Upper block)
(Lower block)
！
CAUTION
CAUTION
CAUTION
CAUTION
:
::
:
