DNF Controls ST420-CP - Manual (Page 4)

ST420 Control Panel 4 4
3. INSTALLATION
Connect the supplied POWER SUPPLY, #AP4108, into the POWER connector on the rear of the
SHOTBOX. Plug the Power Supply into an outlet, 90 VAC – 240 VAC.
If the ECS is RS232
a.
Connect one end of the RS232, NULL-MODEM cable to OUTPUT 2 connector on the back of the
ST420.
b.
Connect the other end of the cable to the External Control System.
If the ECS is RS422
a.
Connect one end of the 9-conductor RS422 serial cable to OUTPUT connector on the back of the
ST420.
b.
Connect the other end of the cable to the External Control Panel.
Installation is complete.
4. OPERATIONS
On Powerup, the unit prompts to select External Interface Port (the port ECS is connected to).
The LCD keys display “SELECT EXTERNAL PORT”.
Press “RS232 (OUTPUT 2)” key if the ECS uses RS232. The ECS MUST be connected to OUTPUT 2 if
you choose this option.
OR
Press “RS422 (OUTPUT)” key if the ECS uses RS422. The ECS MUST be connected to OUTPUT if you
choose this option.
Upon selecting the port, the ST420-CP comes up in a default state. The big LCD display is blank, all
switches are cleared with green color turned on, all LEDs are off. The ST420 is ready to receive
commands from ECS.