User's Manual

PMAC User Manual
52 Input/Output: Connecting PMAC to the Machine
Display Port Outputs (JDISP Port)
The JDISP connector (J1) allows connection of the Acc-12 or Acc-12A liquid crystal displays, or of the
Acc-12C vacuum fluorescent display. Both text and variable values may be shown on these displays
using the DISPLAY command, executing in either motion or PLC programs.
V/F
ENC4
DECODER/
COUNTER
"TIME
BASE"
CONVERSION
+5V
WIPER
GND
(OPTIONAL
USER
PROVIDED)
+10V
25
J2
20 26
25 KHz/V
E72 E73
CHA4
CHA4/
(E24:1-2)
I915=4
X:$C00C+
24
X:$723
Y:$723=$00C00C
24
X:$729
PULSE TRAIN
0 TO 250 KHz
INTEGER
COUNT
HARDWARE
VOLTAGE-TO-FREQUENCY
CONVERTER
SOFTWARE-CONFIGURED
HARDWARE COUNTER
SOFTWARE
INTERPOLATION
SOFTWARE
DIFFERENTIATION
24
INTERPOLATED
COUNT
VALU E
PROPORTIONAL
TO VOLTAGE
1/T
ENCODER
CONVERSION
Y:$728=$400723
Y:$729=SCALING
~5Kohm
TO USE THIS VALUE FOR FEEDRATE OVERRIDE FOR A COORDINATE SYSTEM, SIMPLY SET THE TIME BASE SOURCE ADDRESS I-VARIABLE (Ix93 FOR C.S.x) TO 1833 ($729)
TO USE THIS VALUE FOR SOME OTHER PURPOSE, SIMPLY ASSIGN AN M-VARIABLE TO THIS REGISTER (e.g. M60->X:$729,0,24,U)
SCALING IS SET BY THE VALUE IN Y:$729 (FOR THE DEFAULT CONVERSION TABLE). THIS VALUE CAN BE DETERMINED INTERACTIVELY BY VARYING THE INPUT VOLTAGE AND NOTING THE EFFECT
VOLTAGE
0 TO +10V
Figure 4 Using the PMAC Control Panel Analog (Wiper) Input