Omron CJ1W-NC271 - 12-2009, Operation Manual

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198
Axis Operating Input Memory Areas
Section 4-8
Input
(PCU
to CPU
Unit) b+3 00 External I/O
status Forward rotation limit
input Returns the status of I/O sig-
nals 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.
4-8-5 External I/O
Status Bits
01 Reverse rotation limit
input
02 Origin proximity input
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 sys-
tem.
b+4 --- Errors Axis error code Returns the error code for the
axis error. 12-4 Error Codes
b+5 00 to 03 Expanded
monitoring Monitor 1 type Indicates the monitor type for
the present monitor 1 (b+10,
b+11). 4-8-6 Expanded
Monitoring
04 to 07 Monitor 2 type Indicates the monitor type for
the present monitor 2 (b+12,
b+13).
08 to 15 Not used (reserved
by the system). Always 0.
b+6 --- Present
position Feedback present
position (rightmost
word) Returns the feedback present
position. 7-3 Coordinate Sys-
tem and Present
Position
b+7 --- Feedback present
position (leftmost
word)
b+8 --- Command present
position (rightmost
word) Returns the command
present position.
b+9 --- Command present
position (leftmost
word)
I/O Word Bits Category Name Function Details