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Description of Function Codes
MD380 User Manual
Function Code
A8-02
Parameter Name
Slave following
master command
selection
Setting Range
0: Slave not following running
commands of the master
1: Slave following running commands
of the master
Default
0
When A8-01 (Master and slave selection) is set to 1 (Slave) and F0-02 (Command source
selection) is set to 2 (Communication control), if A8-02 is set to 1, the salve follows the
master to start or stop.
Function Code
A8-03
Name
Setting Range
Usage of data received by slave
0: Torque setting
1: Frequency setting
Default
0
It is used to determine whether the slave uses data received from the master for torque
setting or frequency setting. This function can be used only when the frequency source or
torque source must be communication setting.
When the AC drive is a slave in point-point communication and receives data for torque
setting, 100.00% of the received data corresponds to 200.0% of torque setting, unrelated
to A0-03. If zero offset of the slave is 0.00% and the gain is 1.00, it means that the slave
directly takes the output torque of the master as the target torque.
When the AC drive is a slave in point-point communication and receives data for frequency
setting, 100.00% of the received data corresponds to the value of F0-10 (Maximum frequency).
For example, to balance the load, do the following settings.
Table 6-14 Settings for balancing the load
Master
Slave
A0-00 = 0: Speed control
A0-00 = 1: Torque control
A8-00 = 1: Point-point communication
enabled
A8-00 = 1: Point-point communication enabled
A8-01 = 0: Master in point-point
communication
A8-01 = 1: Slave in point-point communication
A8-02 = 0: Data source from master being
output torque
A8-03 = 0: Slave receiving data for torque setting
A0-01 = 5: Torque source in torque control set to
communication setting
Function Code
Parameter Name
A8-04
Zero offset of received data (torque)
-100.00%–100.00%
Setting Range
A8-05
Gain of received data (torque)
-10.00–10.00
Default
0.00%
1.00
These two parameters are used to adjust data received from the master and define the
torque reference relationship between the master and the slave.
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