![background image](http://html1.mh-extra.com/html/omron/cj1w-nc271-12-2009/cj1w-nc271-12-2009_operation-manual_742348239.webp)
211
Axis Operating Input Memory Areas
Section 4-8
Forward Software Limit Flag and Reverse Software Limit Flag
Word
b+1
Bits
12 and 13
Function
These flags turn ON and OFF when the software limit function is enabled to
indicate the present position status for the forward/reverse software limit.
Forward Software Limit Flag
0: Within forward software limit range
1: Forward software limit range exceeded
Reverse Software Limit Flag
0: Within reverse software limit range
1: Reverse software limit range exceeded
Details
Refer to
10-8 Software Limits
.
4-8-5
External I/O Status Bits
The External I/O Status Bits (word b + 3) show the I/O status of the I/O signals
allocated to the Servo Drive.
b = Beginning word of Axis Operating Input Areas specified in Common
Para (Axis No.
−
1)
×
25
Bit 10 (Emergency stop input) indicates the status of the emergency stop
input signal input when using a G5-series Servo Drive, G-series Servo Drive
or SMARTSTEP Junior Servo Drive. This bit is always 0 when using a W-
series Servo Drive, which does not have an emergency stop signal.
The SMARTSTEP Junior Servo Drive does not have inputs for external latch
signals 2 and 3. When using a SMARTSTEP Junior Servo Drive, the input sta-
tus for these signals will always be 0.
Reverse Software Limit (Pn806)
Forward Software Limit (Pn804)
Reverse direction
Forward Software Limit Flag
(b+1, bit 12)
Reverse Software Limit Flag
(b+1, bit 13)
Feedback position
Forward direction
I/O
Word
Bits
Category
Name
Function
Input
(PCU
to CPU
Unit)
b+3
00
External I/O
status
Forward rotation limit input
Returns the status of I/O signals
for each axis.
1: Signal valid
0: Signal invalid
The external I/O status shows the
enabled/disabled status of signals
used for PCU control.
This status is different from the
electrical ON/OFF status of the I/O
signals.
01
Reverse rotation limit input
02
Origin proximity input signal
03
Encoder Phase A input
04
Encoder Phase B input
05
Encoder Phase Z input
06
External latch signal 1 input
07
External latch signal 2 input
08
External latch signal 3 input
09
Brake output
10
Emergency stop input
11 to 15
Reserved by the system.
Summary of Contents for CJ1W-NC271 - 12-2009
Page 2: ......
Page 4: ...iv ...
Page 6: ...vi ...
Page 22: ...xxii ...
Page 58: ...30 Starting Operation Section 2 2 ...
Page 244: ...216 Axis Operating Input Memory Areas Section 4 8 ...
Page 264: ...236 Transferring Servo Parameters Section 5 3 ...
Page 396: ...368 Linear Interpolation Section 9 7 ...
Page 648: ...620 List of Error Codes Appendix D ...
Page 674: ...646 Additional Functions for the CJ1W NCF71 MA Appendix F ...
Page 684: ...656 Index ...
Page 686: ...658 Revision History ...