Setup
25
Dispense Request Line
For the external machine to request a shot Pin #8: Dis-
pense Request should be momentarily connected to
Pin #1: External Machine Return Ground. This connec-
tion should last 150 milliseconds (mS) to 200 mS before
being released.
If a Dispense Request signal is received when the
Ready Status “High” signal is not being sent, the request
is ignored.
Shot Number or Sequence
n
th
Shot
Selection Line
Selecting a shot is done in a manner similar to the Dis-
pense Request line, where Pin #7 should be momen-
tarily connected to Pin #1 using a semi-conductor based
output.
Unlike the Dispense Request line where the line is
grounded only once, Pin #7 is grounded to Pin #1
repeatedly. The period of time between Pin #7 being
grounded should equal the period of time it is grounded,
meaning the pattern followed should be
x
mS grounded,
x
mS ungrounded,
x
mS grounded,
x
mS ungrounded,
etc. The allowable range for the period of time Pin #7 is
ground/ungrounded is 10 to 100 milliseconds.
To request shot
n
or the
n
th
shot within the selected
sequence, Pin #7 must be connected to and then dis-
connected from Pin #1
n+1
times. For example, to
request shot 3, Pin #7 must be grounded four times.
After Pin #7 has been grounded
n+1
times, there must
be a delay of four times the period Pin #7 was grounded
for each of the
n+1
repetitions. For example, if Pin #7
was grounded for 15 milliseconds then ungrounded for
15 milliseconds and so on, there must be a delay of 60
milliseconds before activating the Dispense Request
line.
See FIG. 15 on page 26.
The gun must be configured to “Tap” mode to use
the dispense request line.
See FIG. 15 on page 26.
The operating mode can only be changed using the
HMI. When an external machine tries to select a
shot, the machine will select a specific shot number
if in Shot mode and will select a specific shot posi-
tion within the selected sequence if in Sequence
mode.
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