E
QUIPMENT
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VIEW
28
AlphaXpress 8731 Sign Installation and Maintenance Manual (pn 1508610601 rev. A)
N
LED1 TO
LED4
DIAGNOSTIC LEDS
• LED1:
❏
Controller #1—Heartbeat.
❏
Controller #2—Heartbeat.
• LED2:
❏
Controller #1—Communications from P3 or the ground controller.
❏
Controller #2—Communications from Controller #1 or the ground controller depending on
the configuration.
• LED3:
❏
Controller #1—Not used in all applications.
❏
Controller #2—Not used in all applications.
• LED4:
❏
Controller #1—Communications to and from LED display boards.
❏
Controller #2—Communications to and from light sensors #0, #1, and #2.
O
J5
PROGRAMMING
PORT
P
J4
ETHERNET PORT
Communication option available on 15029101 only.
Q
S2 RESET
CONTROLLER
RESET SWITCH
Initiates soft reset on controller board.
R
P3
RS232 PORT
• Two-controller configuration—used to interface RS232 to device.
• Three-controller configuration—not used.
• Controller #2 P3—not used.
S
P2
RS232 PORT
RS232 COMM PORT 1—not used.