Connections
CAN Bit Rate Detection
© 2017 maxon motor. Subject to change without prior notice.
maxon motor control
4-40
Document ID: rel7748
EPOS2 Positioning Controller
Edition: November 2017
EPOS2 24/2 Hardware Reference
4.3.2
CAN Bus Termination
The CAN bus must be terminated at both ends by a termination resistor of 120
Ω
, typically. Depending
on utilization of the controller, individual CAN bus termination settings must be performed.
Using DIP switch 6, the controller-internal bus termination resistor can be activated/deactivated. By
default, bus termination is “OFF”, nevertheless, the bus is
not
terminated.
Figure 4-40
DIP Switch (JP1 [6]) – CAN Bus Termination (left “OFF” / right “ON”)
4.4
CAN Bit Rate Detection
Automatic bit rate detection may be forced by DIP switch 5.
Figure 4-41
DIP Switch (JP1 [5]) – Auto Bit Rate (left “OFF” / right “ON”)
4.5
Status LEDs
The LEDs display the current status of the EPOS2 24/2 as well as possible errors:
•
Green LED shows the operating status
•
Red LED indicates errors
For detailed information
separate document «EPOS2 Firmware Specification».
Table 4-19
LEDs – Interpretation of Condition
LED
Status / Error
Red
Green
OFF
Slow
Power stage is disabled. Device is in status…
• “Switch ON Disabled”
• “Ready to Switch ON”
• “Switched ON”
OFF
ON
Power stage is enabled. Device is in status…
• “Operation Enable”
• “Quick Stop Active”
ON
OFF
FAULT state. Device is in status…
• “Fault”
ON
ON
Power stage is enabled. Device is in temporary status…
• “Fault Reaction Active”
ON
Flash
No valid firmware or firmware download in progress.
Flash = Flashing (
≈
0.9 s OFF/
≈
0.1 s ON)
Slow = Slow blinking (
≈
1 Hz)
