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5. Mailbox Function Points
Using below APOGEE
®
FLN points, inverter parameters can be read and written.
Table 11 VF-PS1 Parameter Access Point Table
Point
Number
Point
Type
Point
Name
Note
95 LAO
MBOX
PARAM
The communication number (hex.) of the access parameter is set.
Refer to “5.1” and the inverter instruction manual.
96 LAO
MBOX
DATA
The parameter’s data.
The data unit is depend on the parameter
specification. Refer to “5.1” and the inverter instruction manual.
97 LDO
MBOX
READ
The parameter value specified by MBOX PARAM is read to MBOX
DATA by setting 1(READ).
When the data is read in normally this point is changed from 1 to 0,
otherwise this point remains 1.
98 LDO
MBOX
WRITE
When 1(WRITE) is set in MBOX WRITE, data of MBOX DATA is
written to the parameter of MBOX PARAM.
As for the parameter having an EEPROM, the data is written RAM,
after that the data is written to. (Note 1).
When the data is written in normally this point is changed from 1 to
0, otherwise this point remains 1.
(Note1): Please do the inverter cannot start (for example “ST terminal =OFF”) at writing
the parameter that commands to the inverter to drive and is inhibited during
driving. If not, the data is only written RAM and this point remains 1.
Example 1)
Read the deceleration time (
dec
, Comm. No. 0010)
1. Write “16” as the communication number to MBOX PARAM (LAO #95).
* The communication number uses the value of a decimal number set to
“10” by the hexadecimal number. 0x0010 = 16 dec.
2. Write “1” to MBOX READ (LDO #97).
3. Confirm whether it was read in MBOX READ (LDO #97).
4. The read value is set to MBOX DATA (LAO #96). Read MBOX DATA (LAO
#96). In addition, the unit of
deceleration time
is 0.1s.
Example 2)
Write “50.0Hz” to RX input point 2 (
f219
, Comm. No. 0219)
1. Write “537” as the communication number to MBOX PARAM (LAO #95).
* 0x0219 = 537 dec.
2. Write “5000” to MBOX WRITE (LDO #98).
* 5000 = 50.00Hz, unit is 0.01Hz
3. Write “1” to MBOX WRITE (LDO #98).
