Maintenance and Troubleshooting
4-6
Controller Address Settings
Upper
Lower
Address
0 0
Test
Mode
0 1 1
0 2 2
0 3 3
0 4 4
0 5 5
0 6 6
0 7 7
0 8 8
0 9 9
0 A 10
0 B 11
0 C 12
0 D 13
0 E 14
0 F 15
1 0 16
1 1 17
… … …
F 0 240
Four diagnostic LEDs are located on the controller; the table below tells what each
LED denotes:
CPU
LED Color
Function Operation
DS1
Red
CAN TxD
Flashes when controller is transmitting CAN information.
DS2
Red
CAN RxD
Flashes when controller is receiving CAN information.
DS3
Red
System Reset
Off when controller is functioning properly. Flashes at 1.5-
second rate if controller is not resetting the watchdog timer.
DS4
Red
Run
A steady flash indicates the controller is running properly.
Normal flash rate is about once per second.
DS5
Red
U15 Programmed
On when U15 contains a valid logic program.
DS6
Red
U7 Programmed
On when U7 contains a valid logic program.
DS7
Red
Link
On when Ethernet interface is in the link-up condition. Flashes
when the Ethernet chip detects transmits or receives activity.
DS8
Red
Speed
On when the Ethernet interface is at 100Mbps. Off when the
Ethernet interface is at 10Mbps.
DS9
Red
Duplex
On when the Ethernet interface is at full duplex. Off when the
Ethernet interface is at half-duplex.
DS10
Red
Collision
Flashes when the Ethernet interface detects a collision in half-
duplex.
DS11
Red
+5V
On when +5V power supply is functioning.
DS12
Red
+3.3V
On when +3.3V power supply is functioning.
DS13
Red
+2.5V
On when +2.5V power supply is functioning.
