YASKAWA SI-S3 Technical Manual page 48

11 Drive Parameter, Monitor and Control Register Access
Subindex 0: Number of entries
Contains the number of subindex.
Subindex 1: Object value
This subindex contains the value of the object (value of the MEMOBUS/Modbus register specified in the
subindex 2).
Subindex 2: MEMOBUS/Modbus address of content
This subindex contains the address of the drive MEMOBUS/Modbus register that the object is linked to. Setting
FFFF (Hex.) to subindex 2 will disable the object (i.e., the value in subindex 1 will be 0).
Subindex 3: Filter value
Sets the filter value for the Change of State event if the object is mapped to a TxPDO with transmission type FE
(Hex.). When the filter value is set to 0000 (Hex.), the Change of State event will be triggered whenever the value
of the MEMOBUS/Modbus register specified in subindex 2 changes. When the filter is set to FFFF (Hex.), the
Change of State event will not be triggered.
Subindex 4: Filter type
This subindex is used to select the filter type. Two filter types are available, an analog filter and a bitmask filter.
If the analog filter is selected (subindex 4 = 0), the value of the MEMOBUS/Modbus register specified in
subindex 2 must change by the amount set in subindex 3 before a Change of State event is triggered. The filter has
no unit. The resolution depends on the value of the MEMOBUS/Modbus register content.
If the bitmask filter is selected (subindex 4 = 1), the Change of State event will be triggered whenever the value of
the MEMOBUS/Modbus register specified in subindex 2 changes in any bit except the masked bits. The bitmask
is set by the filter value of subindex 3. Bits set to "1" are ignored.
Examples
Object Content Filter Value
(Subindex 2) (Subindex 3)
Output frequency (0041
A (Hex.)
(Hex.))
Output voltage (0054
32 (Hex.)
(Hex.))
Drive Status
(0020 (Hex.))
03 (Hex.)
Drive Status
0000 0000 0000 0011
(0020 (Hex.))
09 (Hex.)
Drive Status
0000 0000 0000 1001
(0020 (Hex.))
11 Drive Parameter, Monitor and Control Register Access
All drive parameters, monitors, and other control registers are represented by their MEMOBUS/Modbus register.
They can be read or written by accessing these registers through the SI-S3 option.
MEMOBUS/Modbus registers can be directly read or written by using the MEMOBUS/Modbus read/write
commands. They can also be mapped to the content of a manufacturer-specific object, and then be accessed by
reading from or writing to this object. Refer to
content selection.
When writing drive parameters, some general precautions concerning the message timing have to be taken into
account.
• The drive needs some time to activate changes to parameter values. When changing multiple parameters, be
sure to add a wait time between write requests.
• If an Enter command is issued, be sure to add a wait time between the Enter command and the next message.
Refer to the drive technical manual for more information about MEMOBUS/Modbus addresses available in the
drive and the wait times required between parameter write requests and Enter commands.
48
Filter Type
(Subindex 4)
0 (Analog)
0 (Analog)
0 1 (Bitmask)
1 (Bitmask)
(Bin)
1 (Bitmask)
(Bin)
Selecting the Object Content on page 44
Resolution of Object
Value
Change of State is triggered when the output frequency changes by
0.01 Hz
more than 0.10 Hz.
Change of State is triggered when the output voltage changes by more
0.1 V
than 5.0 V.
- Change of State is triggered when any bit in the drive status changes.
Change of State is triggered by any status change except "Running"
-
(bit 0) and "During Zero Speed" (bit 1).
Change of State is triggered by any status change except "Running"
-
(bit 0) and "During Fault Reset Input" (bit 3).
YASKAWA SIEP C730600 85D CANopen Technical Manual
Object Value Behavior
for details on object