7 Before Starting Positioning Operation
50
FX
3U
-20SSC-H Positioning Block User's Manual
7.1 Note on Setting Parameters
7.1.4
Setting parameters from flash memory [Sequence program]
This subsection explains how to set positioning parameters and servo parameters from the flash memory at
startup.
Because the parameter setting program is not required for the operation program, create it as a subroutine
sequence as in the program example, create and execute it separately from the operation program.
→
For direct specification of the buffer memory using the FROM/TO instruction and applied
instructions, refer to Section 12.1 and the PROGRAMMING MANUAL
Caution for using a 20SSC-H earlier than Ver. 1.10
Use FX Configurator-FP when changing servo parameters.
When changing servo parameters using a sequence program, change servo parameters stored in the buffer
memory in the following status, save servo parameters to the flash memory, and then turn OFF and ON again
the power of the servo amplifier and PLC (including the 20SSC-H).
• Status in which the power of the servo amplifier is OFF
• Status in which the servo amplifier is not connected to the 20SSC-H
Before turning ON the power of the PLC (including the 20SSC-H) again, connect the servo amplifier to the
20SSC-H.
• Status in which each flag of servo status 2 is as follows
Do not change servo parameters in the servo amplifier when changing servo parameters in the 20SSC-H.
If servo parameters are changed in the servo amplifier, update of servo parameters is automatically
started.
Note
When using this setting method, make sure to set the following positioning parameters and servo parameters
stored in the flash memory as follows.
• Positioning parameters (Ver. 1.10 or later)
Set the servo parameter transfer mode as follows.
→
For the operation parameter 2, refer to Subsection 11.1.2
• Servo parameters
Set the servo series as follows.
*1.
When connecting the MR-J3W-
B, set "MR-J3-B" as the servo series.
*2.
The MR-J3-
BS can be set for 20SSC-H blocks later than Ver.1.40.
BFM Number
State
Description
X-axis
Y-axis
Servo status 2
Parameter update
completed flag
BFM #72
b0
BFM #172
b0
ON
•
This bit is set when an automatic update of
servo parameters is completed.
•
Cleared when a servo parameter save
command or servo parameter initialization
command is finished.
Parameter updating
flag
BFM #72
b1
BFM #172
b1
OFF
This bit is ON while servo parameters are being
updated.
Parameter update
request flag
BFM #72
b2
BFM #172
b2
OFF
This bit turns ON when the servo amplifier sends
servo parameter update request
BFM Number
Description
X-axis
Y-axis
Operation
parameter 2
Servo parameter
transfer mode
BFM #14002
b15
BFM #14202
b15
Set this bit to OFF using a sequence program.
(Transfers data stored in the flash memory to the servo
amplifier.)
BFM Number
Description
X-axis
Y-axis
Servo series
BFM #15000
BFM #15200
Set the servo amplifier series connected to the 20SSC-H
using a sequence program.
1: MR-J3-B
*1
3: MR-J3-BS
*2