Graco IPH-25 Series Installation & Operation Manual page 25

Dispense Request Line
See F . 15 on page 26.
IG
The gun must be configured to "Tap" mode to use
the 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
Selection Line
See F . 15 on page 26.
IG
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.
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
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.
th
Shot
th
shot within the selected
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.
Setup
25