9300 Servo PLC
Connection
3-37
9300ServoPLC EN 1.4
C0361 Bus load
With these codes you can find out which percentage loading of the bus is required by the drive
controller, or is occupied by the individual data channels or system blocks. Faulty telegrams are not
taken into account in this case.
The individual subcodes indicate the following bus loadings:
C0361/x Meaning
C0361/1 All transmitted telegrams
C0361/2 All received telegrams
C0361/3 Transmitted telegrams from CAN1_OUT
C0361/4 Transmitted telegrams from CAN2_OUT
C0361/5 Transmitted telegrams from CAN3_OUT
C0361/6 Transmitted telegrams from parameter channel 1
C0361/7 Transmitted telegrams from parameter channel 2
C0361/8 Received telegrams from CAN1_IN
C0361/9 Received telegrams from CAN2_IN
C0361/10 Received telegrams from CAN3_IN
C0361/11 Received telegrams from parameter channel 1
C0361/12 Received telegrams from parameter channel 2
The data transmission has limitations that are given by the number of telegrams per time interval and
thedatatransmissionrate.
You can establish these limits for data exchange within a pure drive group, by adding the code
C0361/1 values for all the participating drives.
Example:
3 drives are grouped together through the system bus.
C0361/1 for drive controller 1 23.5% bus loading
C0361/1 for drive controller 2 12.6% bus loading
C0361/1 for drive controller 3 16.0% bus loading
52.1% total bus loading
Tip!
• The bus loading for all participating devices should not exceed 80%.
• If other devices are connected, such as decentralised inputs and outputs, then their telegrams
must also be taken into account.
• A bus-overloading can, for instance, be caused by the event-controlled transmission of
contninuously changing signals.
– Remedy: set the cycle time for the system blocks that are involved (CAN2_OUT and
CAN3_OUT) under C0356/2 and C0356/3 to an appropriate value, such that the sum of all
the bus loadings is not excessive.
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