6.2.13 Object 240Ch: Actual speed
Actual speed in 4096/Second.
Index 240Ch
Name Safety card actual speed
Object code VAR
Data type UNSIGNED32
Category optional
Access ro
PDO mapping possible
Value range UNSIGNED32
Default value â
6.3 Examples
All examples are valid for S300/S700. All values are hexadecimal.
6.3.1 Basic testing of the connection to the S300/S700 controls
When the S300/S700 is switched on, a boot-up message is transmitted over the bus. The tele-
gram continues to be transmitted, as long as it has not yet found a suitable receiver in the bus sys-
tem.
If a CAN master is unable to recognize this message, then the following measures can be taken to
test communication:
Check the bus cable: correct characteristic impedance, correct termination resistors at both
ends?
With a multimeter: check the quiescent level of the bus cables CAN-H and CAN-L against
CAN-GND (approx. 2.5 V).
With an oscilloscope: check the output signals on CAN-H and CAN-L at the S300/S700. Are
signals being transmitted on the bus? The voltage difference between CAN-H and CAN-L for
a logical "0" is approx. 2-3 V.
Does signal transmission stop if the master is connected?
Check the master hardware.
Check the master software!
S300-S700 CANopen | 6 îîAppendix
Kollmorgen | kdn.kollmorgen.com | December 2019 117
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