37
10.5.3
LAO Subpoints
#28........Sets the drive’s RS-485 frequency command. Note that the drive will
only use this value as its active frequency command if the
Frequency Mode
parameter in
Program…Utility Group
is set to
”
Use RS232/485
”, or if the “frequency override” bit (#38) is ON.
Although the adjustment range for this object is 0.00Hz
∼
400.00Hz,
the actual frequency command will be internally limited by the
Upper
Limit Frequency
and
Lower Limit Frequency
parameters.
ASD parameter FA05.
#30........Preset speed selection. A value of “0” means “no preset speed
selected”, while values of 1
∼
15 correspond to preset speeds #1
∼
#15. To run a selected preset speed, the drive must be configured to
be using RS-485 commands (parameter
Command Mode
set to
”
RS232/485
” or #39 ON) and a RUN command must be active (#33).
ASD parameter FA04, bits #0
∼
#3.
#31........In addition to the predefined LAO subpoints (#28 and #30), two user-
defined LAO subpoints are available (#31 and #32). To define which
ASD parameters are to be associated with these LAO’s, enter their
parameter numbers (in decimal) into parameters
Ext Comm Cfg #7
and
Ext Comm Cfg #8
. Parameter
Ext Comm Cfg #7
corresponds to #31 and
Ext Comm Cfg #8
corresponds to #32.
For example, if the drive’s deceleration time #1 (ASD parameter
0010) is to be set via #31, then convert the parameter number to
decimal (0x0010 = 16
10
) and enter the result (16) into
Ext Comm Cfg
#7
. After cycling power, #31 will then provide access to deceleration
time #1. Note that because any available ASD parameter can be
accessed via this method, #31 and #32 are dimensionless and have
multiplier values of 1 (i.e. the object’s data will be the raw value as
maintained internally to the drive).
The factory default values of parameters
Ext Comm Cfg #7
and
Ext Comm Cfg #8
are 0, which means “not designated”. When
these drive parameters are “not designated”, their corresponding
subpoint values will always be 0, and they will not access any drive
parameters.
#32........Refer to the explanation for #31 above. The data accessed via this
object is defined by the decimal ASD parameter value entered into
Ext Comm Cfg #8
.
10.5.4
LDO Subpoints
Note that the drive will only use the commands indicated in subpoints #33, #34
and #37 if the
Command Mode
parameter in
Program…Utility Group
is
set to ”
RS232/485
”, or if the “command override” bit (#39) is ON.
#33..........Run/stop command. ASD parameter FA04, bit #10.
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