RC32c and RC16C Operators Manual
Goodwin Electronics
D1011/v1.7 /23/10/03
Page 10
irrespective of the angle, once it has been triggered. Two time bases 0.1 and 1 sec, can be
selected by configuring parameter page 5.
To select the timer mode press the
TIMER
key and the letter
t
will be displayed in the B axis
display. The appropriate time can then be entered. Any 3 digit value can be entered. If a cam
output is configured as a timer then it can be reset to the normal cam mode by pressing the
TIMER
key once more. This action will automatically set any programmed data in the B axis to
zero.
The timer based cam output will be activated by the encoder reading passing the programmed
angle
in either direction.
Depending on the parameter setting on page 5 value for the timer can
be set in the range 0,01 to 99,9 sec or 1 to 999 sec.
The timers can be retriggerable or single shot timers by setting the appropriate options on
parameter page 5 (see sections 8 and 9). Retriggerable timers are set to run EVERY time the
encoder angle passes through the programmed ON angle.
Single shot timers can only be activated if the timer is NOT running, i.e., the output of the cam
must be OFF before the timer can be set running.
NOTE:
if any cam output is configured as a timers then the scan time of the RC32C is 2.0 ms.
3.12 DUAL SPEED CAMS
If required it is possible to introduce a “gearing ratio of 2 “ on the first 16 cams. If selected this
causes the angle presented by the encoder to be divided by 2. Thus for these cams one complete
revolution occurs every 720 encoder degrees. the remaining cams (17 - 32) function normally
This function is selected by setting the H 16 option on parameter page 7.
The angle display will always indicate true encoder degrees.
if the lower left hand vertical bar is illuminated then cams 1 _16 are in the 0 -359 degree range.
if the upper left hand vertical bar is illuminated then cams 1 _16 are in the 360 _719 degree range.
The angular display is always the encoder angle plus any datum offset that has been set in the
system. The same datum is applied to all cams even when the gear ratio of 1:2 has been
selected.
Note that when programming cams 1 to 16 it is necessary to program the switching angle
including the gearing ratio, thus if the following is programmed for a cam,
ON ANGLE 10 OFGF ANGLE 20
then the cam switches on when the displayed angle lies between 20 and 39 with the lower bar
illuminated (if an absolute system) .
3.13 RECORD MODE
The RECORD mode can be selected by rapidly pressing the COPY key when in the default mode
and out of cycle.
If JOG UP is pressed, data is uploaded to a remote unit via the RS232 serial link.
If JOG DOWN is pressed, data is downloaded from a remote unit via the RS232 serial link.
When the RS232 is active the B display will indicate]
rc
for downloading (ie., data is coming from a remote terminal to the cam)
tr
for uploading (ie., data is going from the cam to a remote terminal )
A time stamped record of certain events is stored in the cam and can be viewed in this mode.
