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[ PCMS ]
Captured Master Cycle Position
Type
Assignment or Comparison
Syntax
See below
Units
n/a
Range
n/a
Default
n/a
Response
n/a
See Also
ENCCNT, FOLMAS, INFNC, [ PCC ], [ PCE ], [ PE ], PSET, SCALE,
SCLMAS, SFB, TPCMS, [ TRIG ], TRGLOT, TTRIG
Use the
operator to assign the captured master cycle position for a follower axis to a variable, or to
PCMS
make a comparison against another value.
(like
) is unique among position assignment variables, because its value rolls over to zero each
PCMS
PMAS
time the entire master cycle length (
essentially a snap-shot of the position relative to the master cycle at the time of the capture.
The master must be assigned first (
Syntax: VARn=PCMSc where "n" is the variable number, and "c" designates trigger A or B for the axis, or M for the
input (see table below); or PCMS can be used in an expression such as IF(PCMSB>2311).
MASTER TRIG
General-purpose inputs on the
Input # Pin #
1
37
2
38
3
39
4
34
5
35
About Position Capture: The master cycle position can be captured only by an input that is defined as
"trigger interrupt" input with the
input is activated, the master cycle position of the axis is captured and the position is available through the
use of the
operator and the
PCMS
Position Capture Status, Longevity of Captured Position: Use the
ascertain if a trigger interrupt input has been activated.
is an assignment/comparison operator for using the status information in a conditional expression
TRIG
(e.g., in an
statement). Once the captured master cycle position value is assigned/compared with the
IF
operator, the
/
PCMS
TTRIG
TRIG
remains available until it is overwritten by a subsequent position capture from the same trigger input.
Position Capture Accuracy: The master cycle position is interpolated; the capture accuracy is 50 µs
multiplied by the velocity of the axis at the time the trigger input was activated.
Scaling and Position Offset: If scaling is enabled (
distance scaling factor (
SCLMAS
counts from the commanded or encoder master source as selected with the
a
(establish absolute position reference) command, any previously captured master cycle positions
PSET
will be offset by the
command value.
PSET
) has been traveled. Thus, the captured
FMCLEN
command) before this operator will be useful.
FOLMAS
connector:
DRIVE I/O
GT6K & GV6K Function ( INFNC default )
INFNC1-A (General-purpose. If assigned, TRG-A must be on Input #1)
INFNC2-A (General-purpose. If assigned, TRG-B must be on Input #2)
INFNC3-A (General-purpose)
INFNC4-A (General-purpose)
INFNC5-A (General-purpose. If assigned, MASTER TRIGGER must
be on Input #5)
command (see
INFNCi-H
display command.
TPCMS
TTRIG
status bit for that trigger input is cleared; but the position information
SCALE1
). If scaling is not enabled (
www.comoso.com
PCMS
command). When a "trigger interrupt"
INFNC
and
commands to
TTRIG
TRIG
displays the status as a binary report, and
), the master source position is scaled by the
), the value assigned will be actual
SCALEØ
command. If you issue
FOLMAS
Command Descriptions
Product
Rev
GT6K
6.0
GV6K
6.0
value is
227
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