CANopen Communication Module DVPCOPM-SL
(2) Relevant parameter settings
Error Control Protocol: In the “Node Configuration…” page, click on “Error Control Protocol”, and you will see
the dialog box appearing as below.
In this page, you can set up parameters for error control, e.g. “Master Consumer Timeout” and “Node
Heartbeat Producer Time”. Please note that the value of “Master Consumer Timeout" shall be bigger than the
value of “Node Heartbeat Producer Time”. After you have set up the heartbeat function, and the slave turns
off-line and does not turn on-line within “Master Consumer Timeout”, the master will consider the slave off-line.
If “Heartbeat" is selected, you cannot select “Node Guarding”. In “Heartbeat consumer”, you can add devices
into the node list. Add a device A, and the slave will be able to monitor whether device A is on-line. Select a
device and click on “Edit…” to modify the “Consumer" and “Producer” value.
Explanation of Parameters for above table is as below.
Parameter Name
Explanation
Remark
Guard time
Master sends the guard message to
slave in cycle of “Guard Time”.
Node
Guarding
Life Time
Factor
Life time=Guard Time x Life Time Factor.
Slave does not respond to the polling
from master within the period of Life
Time and then master assumes the slave
is offline.
When “Heartbeat” is selected,
“Node Guarding” can not be
selected.
DVP-PLC Operation Manual
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