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Turning On the Conext ComBox
975-0704-01-01 Revision A 2–13
Power Cycle To power cycle the Conext ComBox:
1. Turn the Conext ComBox OFF – perform a proper shutdown (see “Shutting
down the Conext ComBox” on page 3–17) then unplug and disconnect it
from all power sources.
2. Wait ten seconds before the next step.
Ensure that there is no USB thumb drive inserted in the USB Host port.
3. Turn the Conext ComBox ON – plug and connect it to a power source.
Wiring Steps To wire the RS 485 Modbus connector for power to the Conext ComBox:
1. Turn off the 24 V DC power supply.
2. Unplug the RS 485 connector from the RS 485 port on the Conext ComBox.
3. Strip 3/8 in. (10 mm) from the end of the 0 V (–) wire of the power cable.
4. Terminate the wire with a ferrule.
5. Install a 1A DC fuse on the 24 V (+) wire of the power cable and strip 3/8 in.
(10 mm) from the end of the wire.
6. Terminate the wire with a ferrule.
DANGER
ELECTRIC SHOCK AND FIRE HAZARD
If the power terminals on the Modbus RS 485 connector are used, the RS 485
connector must only be connected to a circuit rated 24V DC max, 1A max
(fused on the positive wire), and supplied from an SELV source.
Failure to follow these instructions will result in death or serious injury.
NOTICE
EQUIPMENT DAMAGE
Turn OFF all devices before connecting cables. The Conext ComBox does not
have an ON/OFF switch. See “Power Cycle” below.
Failure to follow these instructions can damage equipment or affect
performance.