Table 5.6-11: Aib-Canbus On-Board Leds; Table 5.6-12: Can Speed Settings - Moog 903 User Manual

903-0623-00 Rev. A
LEDs on the AIB-CANBUS card may be used for diagnostics during bench testing.
LED
Red Receive (RX) LED flashes when packets/messages are being received into the
D1: RX AIB-CANBUS card from an external CANBUS device. (Received packets/messages are
transmitted to the far end via the optical link.)
Green Transmit (TX) LED flashes when packets/messages are being transmitted from
D2: TX
the local AIB-CANBUS to an external CANBUS device.
Power LED is green when power is applied to the card. D3 is OFF if there is no power
D3: POWER
applied to the card.
Red Error LED is ON whenever CAN errors are detected. A flashing Error LED indicates
that continuous CAN errors are detected. For example, the error LED will be flashing if
D4: ERROR
there is no terminating resistor on the bus connected to the card and the card tries to
send packets/messages.
D1 and D2 are both ON when a valid optical link exist. In the other hand, D1 and D2 are both OFF when
there is no valid optical link.
When the cards are configured in "Bridge Mode", BUS errors are handled by the local cards only and
therefore a CAN error detected at the "Remote" end is not notified to the "Console" end and vice versa.
The CAN bus "Repeater Mode" is only functional at 62.5kbps with short jumper fibers. LEDs D1, D2, and
D4 are disabled in this mode.
The CAN terminator (J11) shown in Figure 5.6-10 is an 120 ohm resistor rated 0.75W for bench testing
purposes and it is normally left open. External high power termination resistors (>5W) must be used in
place of the on-board resistors in order to handle a possible 12V or 24V fault input across the termination
resistors.
Ensure each bus end (remote and console) is terminated with 120 ohm resistors and that the
resulting nominal bus load is 60 ohm.
The table below shows the switch SW1 CAN speed settings for the AIB-CANBUS cards. Remote and
console cards must have the same settings.
62.5kbps BRIDGE MODE
125kbps BRIDGE MODE
250kbps BRIDGE MODE
500kbps BRIDGE MODE
1000kbps BRIDGE MODE
REPEATER MODE (62.5kbps)
X = DON'T CARE
ON = 1 = CLOSED, OFF = 0 = OPEN
Focal Technologies Corp.

Table 5.6-11: AIB-CANBUS On-board LEDs

Table 5.6-12: CAN Speed Settings

Speed
OFF
OFF
OFF
OFF
Model 903 User's Guide, FMB-X-2.5 Version
Description
SW1 Settings
1 2 3
OFF OFF
OFF ON
ON OFF
ON ON
ON X X
X X X
4
ON
ON
ON
ON
ON
OFF
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