Remotely Changing The Setpoint - Woodward easYgen-2000 Series User Manual

CANopen message
6.5.1.7

Remotely Changing The Setpoint

RPDO
Classical communication for CANopen devices
One message
No validation of the received answer
Only working in operational mode
Table 83: Comparison
37535B
CANopen Applications > Remote Control > Remotely Changing The Setp...
The following table shows exemplary send data for the device on
the CANopen bus in line 1. The following setpoints are transmitted:
Frequency 50.6 Hz (5060 (dec) = 13C4 (hex) ￫ C4 13
n
according to the CANopen protocol)
Power 1000 kW (10000 (dec) = 2710 (hex) ￫ 10 27 according
n
to the CANopen protocol)
Power factor 0.9 lagging (900 (dec) = 0384 (hex) ￫ 84 03
n
according to the CANopen protocol)
ID (hex) Description
321 Remote F P PF setpoint
It is possible to remotely change a setpoint value via the CANopen
protocol using the parameter 504. In order to use the LogicsMan‐
ager command variables for example to enable the second set, dif‐
ferent bits of parameter 504 must be enabled:
04.37 Remote voltage setpoint 2 - bit 4 - 10 00 (hex) must be
n
sent to parameter 504
04.38 Remote frequency setpoint 2 - bit 5 - 20 00 (hex) must
n
be sent to parameter 504
04.39 Remote Power Factor setpoint 2 - bit 6 - 30 00 (hex)
n
must be sent to parameter 504
04.40 Remote power setpoint 2 - bit 7 - 80 00 (hex) must be
n
sent to parameter 504
For remotely changing the control setpoints, it is nec‐
essary to use the interface setpoints instead of the
internal setpoints as data source in the respective con‐
troller.
For example, use data source "05.03 Interface
freq.setp." in parameter
1 source) to transmit a frequency setpoint via interface.
Two different methods for changing a setpoint via CANopen are
detailed below.
These are "Changing a setpoint via RPDO" and "Changing a set‐
point via default SDO communication channel". The advantages
and the disadvantages of these two methods are as follows.
Default SDO communication channel
Configuration process
Two messages
Validation answer, if message has been received by the unit
May take longer in case of communication with two messages
easYgen-2200/2500 | Genset Control
Application
Data (hex)
C4 13 10 27 00 00 84 03
5518 Ä p. 273 (Freq. setpoint
421