Specifications

AR-B1564 User¡¦s Guide
3-2
3.2 SYSTEM SETTING
Jumper pins allow you to set specific system parameters. Set them by changing the pin location of jumper blocks.
(A jumper block is a small plastic-encased conductor that slips over the pins.) To change a jumper setting, remove
the jumper from its current location with your fingers or small needle-nosed pliers. Place the jumper over the two
pins designated for the desired setting. Press the jumper evenly onto the pins. Be careful not to bend the pins.
We will show the locations of the AR-B1564 jumper pins, and the factory-default setting.
CAUTION: Do not touch any electronic component unless you are safely grounded. Wear a grounded wrist strap
or touch an exposed metal part of the system unit chassis. The static discharges from your fingers can
permanently damage electronic components.
3.2.1 Serial Port
(1) RS-422/RS-485 Jumper Setting
(A) COM-A RS-485/RS-422 Adapter Select (JP4)
Figure 3-2 JP4: Serial Port Select—RS-422/RS-485
(B) Terminal Select (JP4)
Figure 3-3 JP4: Serial Port Select— Terminator Select