Siemens Maxum II Reference Manual page 38

Electronic Compartment Component Descriptions and Maintenance Procedures
2.3 System Controller Version 2.1 (SYSCON2.1)
Power LEDs
Located at the back of the board near the RJ 45 connector
Description
Power
Power Bad
CAC Conn Bad
I C Bus LEDs, Buses A and B
2
Located next to I
Description
LED2/5 Norm/Comm
LED3/6 Warning
LED4/7 Fault
I C Bus Pullup-Active LEDs
2
Located next to battery holder
Description
LED19, 20
Can Bridge LEDs
Located to the left of the far left PCI slot
Description
LED16 Ready/Comm
LED17 Warning
LED15 Fault
Can I/O LEDs
Located next to far left CAN direct connector, CAN direct 5
Description
LED8 TX
LED9 RX
38
Color and Meaning
Green – 3.3V power is available. Should be on at all times
Red – Power is faulty or SYSCON hardware reset switch is being pressed
Red – Connection from the SIB3 to the CAC3 is faulty or incomplete. After power up, this
LED should turn off once CAC3 to SIB3 connection is completely initialized.
C Bus connectors
2
Color and Meaning
Dim Green – I C Bus is normal
2
Bright Green - I C Bus is communicating
2
Yellow – Warning on the I
Red –I C Bus fault
2
Color and Meaning
The Auto-pullup feature is supplying pullup current on the I
Color and Meaning
Dim Green – Can Bridge is normal
Bright Green – Can Bridge is communicating
Yellow – Warning on the Can Bridge
Red – Can Bridge fault
Color and Meaning
Green – On when a valid CAN I/O message (other than a heartbeat reply) has been received
and queued for processing
Green – On when a CAN message (other than a heartbeat transmission) has been queued
for sending to the CAN hardware
C Bus
2
C Bus.
2
Maxum II Reference Manual
Manual, 7/2017, 2000596-001