
8 NX-590NE Internet Interface Installation Manual
2. Connect the J3 screw terminals or the J19 plug terminal to the control panel
keypad databus.
Note: The J6 console (DB-9 female) is used by the factory to troubleshoot and
test the board. The J9 PIC upgrade connector is used for future upgrades to the
PIC processor.
Table 1 below shows the minimum wire gauge and maximum wire length allowed
for the NX-590NE.
Table 1: Minimum wire gauge by length
LEDs
Table 2 below describes the LEDs on the NX-590NE board
Table 2: NX-590NE LED indicators
Flashes each time the NX-590NE has an opportunity to access
the NetworX bus. It should flash about two times per second.
Flashes when communicating with NX bus (Data).
Flashes when waiting for UCSIMM acknowledgment.
Flashes when waiting for NX bus (Data) reply.
Flashes when message received from NX bus (Data).
Flashes when message sent to NX bus (Data).
On when U-Boot is running. Flashes when U-Boot is stopped,
either an error has occurred or stopped via console. Off during
application.
On when uClinux Kernel coming up, then shows an application
heartbeat.
Table 3 on page 9 describes the LEDs on the UCSIMM module
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