Mitsubishi Electric MELSEC-Q Series - Page 620

APP - 129
APPENDICES
b) The parameter changed by the servo parameter change function
can be saved by writing to the Motion CPU. The changed parameter
becomes valid by turning ON the power supply of the IAI electric
actuator controller again.
c) "Servo parameter write/read" device
Store the value in the following special registers to change or display
the servo parameter.
No. Name Meaning Details Set by
SD552
Servo parameter
write/read request
Servo parameter
read value
• The read value (low 1 word) of servo parameter
which executed "4: 2 word read request" in SD804 is
stored.
System
(At read
request)
SD553
• The read value (high 1 word) of servo parameter
which executed "4: 2 word read request" in SD804 is
stored.
SD804
(Note-1)
Servo parameter
write/read request
flag
• The "write/read request" is executed after setting of
the axis No. and servo parameter No.
3: 2 word write request
4: 2 word read request
• "0" is automatically set by Motion CPU after
completion of servo parameter write/read request.
("-1" is stored by Motion CPU at write/read error.)
User/
System
SD805 Axis No.
• The axis No. to write/read servo parameter is stored.
Q173DSCPU: 1 to 32
Q172DSCPU: 1 to 16
User
SD806
Servo parameter
No.
• The servo parameter No. to be written/read is stored
in hexadecimal.
Parameter No. ID
(Note)
H
(Note): Refer to IAI electric actuator controlle
r
instruction manual for details.
SD808
Servo parameter
setting value
(2 word)
• The setting value of servo parameter to be written is
stored when "3: 2 word write request" is set in
SD804.
SD809
(Note-1): Do not execute the automatic refresh.
(g) Optional data monitor setting
The following table shows data types that can be set.
Set the data so that the total number of communication points per axis is no
more than 6 points.
Data type Unit Number of words
Number of
communication
data points
Position F/B [pulse] 2 0
Cumulative current value
[Position
command]
(Note-1)
2 0
(Note-1): The position command is the command unit set in the fixed parameter.
(h) Gain changing command, PI-PID switching command, control loop changing
command
Gain changing command, PI-PID switching command, and control loop
changing command becomes invalid.