22 • Questions? Call or Text +1-801-658-0015
SUNSTONE CDDP-A USERS GUIDE
Chapter 5: PLC Automation Features
Select the Communications Screen icon in the Navigation Bar to access all CDDP-A automation features. The
Communications Screen has three sub sections: the PLC tab, the Alarms tab, and the Import/Export tab.
PLC Tab
The PLC Tab has two sub-tabs, the rst is Basic PLC I/O and the second is Remote Schedule Select, as shown
in Figure 23.1. The welder’s PLC inputs (pins 3 and 4) can be used for either the PLC or the Remote Schedule
Select, but not both at the same time.
The Basic PLC I/O tab shows the pin states for the 8 DIN connector on the back of the power supply. Some pins
are hard-coded (Pins 1, 2, 5, 6), while others have a drop-down list of options that operators can choose from
(Pins 3, 4, 7, 8). The pins are labeled 1-8 and each has a color coded box. Green boxes indicate the pin is used
for inputs, while red boxes indicate outputs. Some pins have a color coded circle on the right side. Green circles
indicate the pin is high, and black circles indicate the pin is low.
Each pin has the following function:
• Pin1 is hard coded as the ground signal
• Pin2 is hard coded as a +12V signal
Pin3 and Pin4 can each be congured to one of the following input options:
• Clear Alarm
• Primary Trigger
• Secondary Trigger
• Lockout
• Remote Schedule Select
Note: When Remote Schedule Select is chosen, it will use both inputs. While using Remote Schedule Select the
user can choose which saved welds are to be used via the “Remote Schedule Select” sub tab within the PLC
main tab. (See next section for more details).
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