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Portal PVA Revisio n H ( 2018 ) 93 of 93 22 Appendi x B – Serial Communication 22.1 Serial Co mmuni catio n The w orkcell can communicate with a computer using the EIA RS - 232C standard. This is used fo r debug purpose …

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21 Appendix A – Definitions
Auto Cycle: Machine state where cycles are running.
Auto Purge: A machine function that automatically purges material after a predefined
period of time or during solvent cups procedures.
Calibration Position: The location in the workspace where the X, Y, Z and W locations
for the needle(s) is normalized.
Cycle Stop: Machine state where no action is occurring and the machine is at the
standby position.
Depress: Push and hold for the duration of the operation.
Dispense/Spray Path: A continuous motion profile. The valve is on (dispense/spray)
during the entire motion profile. This is also known as a Path or Motion Sequence.
DMC: Language used to program the motion controller in the workcell.
End Effector: The dispense/spray head assembly. The end effector is moved by the axes.
Head: Dispensing/spraying valve.
Home Position: The (0, 0, 0, 0) location of the workspace. This position is determined by
the location of the home sensors. It is NOT the same as the Standby Position.
Jog: Moving any combination of axes continuously at a set rate of speed until
commanded to stop.
Light Tower: The light tower consists of three stacked lights, red, amber and green (top
to bottom). It is used to indicate the status of the machine.
Main Program File: A text file containing the code that runs the workcell during normal
operations. Main Program File
Motion Sequence: A continuous motion profile. The valve is on (dispensing) during the
entire motion profile. This is also known as a Dispense/Spray Path or Path.
Path: A continuous motion profile. The valve is on (dispense/spray) during the entire
motion profile. This is also known as a Dispense/Spray Path or Motion Sequence.
PathMaster®: Windows® programming software. Used to create, maintain and
download program files for the workcell.
Push: Push and release.
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Program: A collection (or series) of motion sequences.
Project: File containing the code for one or more programs (typically 30 programs).
Purge Position: The location in the workspace where the head moves to perform all
auto purge operations.
PVA: Precision Valve & Automation, Inc.
Solvent Cups: Reservoirs containing a compatible solvent used to maintain the
dispense/spray valves when the workcell is not processing product.
Solvent Position: The location in the workspace where the head moves to rest in a
solvent solution to maintain the dispense/spray valves when the workcell is not
processing product.
Standby Position: The rest position for the end effector. The machine moves here after
homing and after each cycle. This position is usually located near the start point for the
program(s). It is NOT the same as the Home Position.
Terminal: A program used as a communication link between the motion controller and
operator.
Teach: A process by which the workcell registers its current gantry location with
PathMaster® to create a motion sequence.
Workcell: A model PVA250™, PVA250E™, PVA350™, PVA550™, PVA650™, PVA650-FT™,
PVA750™, PVA1000™, PVA2000™, PVA2000C™, PVA3000™, Delta 6, and Delta 8
automated system.
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22 Appendix B – Serial Communication
22.1 Serial Communication
The workcell can communicate with a computer using the EIA RS-232C standard. This is
used for debug purposes. The computer is the Data Terminal Equipment (DTE Device)
and the motion controller is the Data Communications Equipment (DCE Device). The
tables below give a brief overview of the connections required to communicate
between DTE and DCE devices.
WARNING! The computer must be at the same ground potential as the
workcell. Damage to the workcell or computer may result if the ground
potentials are different. Use the workcell service outlet for computer power if
provided.
22.2 9 Pin Serial Connector
Table 3 describes the pin configuration for standard serial ports found on most portable
computers.
Table 3: DTE 9 Pin Serial Connector
Pin
Description
1
Carrier Detect (CD)
2
Received Data (RD)
3
Transmitted Data (TD)
4
Data Terminal Ready (DTR)
5
Signal Ground
6
Data Set Ready (DSR)
7
Request to Send (RTS)
8
Clear to Send (CTS)
9
Ring Indicator (RI)