Omron CJ1W-NC271 - 12-2009 Operation Manual page 258

Transferring Servo Parameters
Axis Operating Input Memory Area (Monitoring)
Axis Operating Output
13
Memory Area
Word a+1
Word a+17
050A hex
Word a+18 0002
Axis Operating Input
14
Memory Area
Word b
Servo Parameter Transferring Flag (ON while transferring data)
Word b+14 2881 hex
0000
Word b+15
a = Beginning word of Axis Operating Output Areas specified in Common Parameters + (Axis No. −1) × 25
b = Beginning word of Axis Operating Input Areas specified in Common Parameters + (Axis No. −1) × 25
Timing Chart for Reading
Servo Parameters
230
Name
Servo Parameter No. a+17
Parameter size
a = Beginning word of Axis Operating Output Areas specified in Common
Parameters + (Axis No. −1) × 25
Name
Servo Parameter
Transferring Flag
Read data (rightmost
word)
Read data (leftmost
word)
b = Beginning word of Axis Operating Input Areas specified in Common
Parameters + (Axis No. −1) × 25
READ SERVO PARAMETER can be executed while the corresponding axis is
operating (Busy Flag ON). The following diagram shows the operation used to
read parameters to the Servo Drive.
CPU Unit
READ SERVO PARAMETER Bit
Servo Parameter No. (Pn50A)
Parameter size (2 bytes)
When the length of the parameter to
be read is two bytes (one word),
0000 is input in the leftmost word
(word b + 15).
READ SERVO PARAMETER can be executed while the corresponding axis is
operating (Busy Flag ON).
When using Position Control Units with unit version 2.0 or later, any Servo
parameter read operations specified during an origin search will be performed
after the origin search has been completed.
READ SERVO PARAMETER, WRITE SERVO PARAMETER, and SAVE
SERVO PARAMETER cannot be executed on one axis at the same time.
Word Bit
--- Specifies the Servo Drive parameter No.
from which the data is to be read.
a+18 --- Specifies the data length of the parameter
to be read in byte units.
Word Bit
b 14 0: Powerup, transfer completed, or transfer
failed
1: Transferring Servo Parameter
b+14 --- Contains the Servo Parameter (hexadeci-
mal) that was read. For a parameter size of
two bytes, the rightmost word is used only,
b+15 ---
and 0000 is stored in the leftmost word. For
a parameter size of four bytes, four bytes of
data from the rightmost to leftmost words
are stored.
PCU
MECHATROLINK
Section 5-3
Contents
Contents
Servo Drive
Internal memory
Pn50A 2881