Omron CJ1W-NC271 - 12-2009 Operation Manual page 241

Axis Operating Input Memory Areas
Axis Operating Output Memory Area (Operating Commands)
Axis Operating Input Memory Area (Monitoring)
Monitor Type
The PCU also has an expanded monitoring function that monitors control
information selected from a number of categories, and returns the result to the
Axis Operating Input Memory Areas.
The expanded monitoring function provides two monitors in the Axis Operat-
ing Input Memory Areas (Monitor 1: Words b + 10, b + 11; Monitor 2: Words b
+ 12, b + 13). The information to be monitored by each is selected using Mon-
itor 1 type (Word a + 15, bits 00 to 03) and Monitor 2 type (Word a + 15, bits
04 to 07) in the Axis Operating Output Memory Areas.
Name Word
Monitor 1 type a+15
Monitor 2 type
Reserved by the sys-
tem.
a = Beginning word of Axis Operating Output Areas specified in Common
Parameters + (Axis No. −1) × 25
Name Word
Monitor 1 type b+15
Monitor 2 type
Not used.
Monitor 1 b+10
b+11
Monitor 2 b+12
b+13
b = Beginning word of Axis Operating Input Areas specified in Common
Parameters + (Axis No. −1) × 25
The following control information can be selected for Monitor 1 and Monitor 2.
Monitor Control
Type information
0 Command
present position
1 Reserved by the
system.
2 Position devia-
tion
3 Feedback
present position
Bits Contents
00 to Used to select the type of control informa-
03 tion to be returned to monitor 1.
04 to Used to select the type of control informa-
07 tion to be returned to monitor 2.
08 to Not used. The setting is disabled.
15
Bits Contents
00 to Indicates the type of control information
03 selected by Monitor 1.
04 to Indicates the type of control information
07 selected by Monitor 2.
08 to Always 0.
15
--- Monitor 1 (rightmost word)
Monitor 2 (leftmost word)
--- Monitor 1 (rightmost word)
Monitor 2 (leftmost word)
Unit
Command Returns the present position being sent
unit to the Servo Drive.
This value is the same as the com-
mand present position in words b + 8
and b + 9.
--- Do not set.
Command Returns the number of pulses remain-
unit ing in the deviation counter of the
Servo Drive in command units.
Position deviation = Command present
position − Feedback present position
Command Returns the actual position of the
unit machine based on feedback from the
Servomotor's encoder.
This value is the same as the feedback
present position in words b + 6 and b +
7.
Section 4-8
Details
213