Basler DGC-2020ES Configuration Instruction Manual page 80

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Figure 9-1. Settings Explorer, System Parameters, Relay Control Screen
For each relay (Start, Run, and Pre-Start), select whether it should use its predefined functionality or be
made programmable.
When Programmable is selected for a relay, it becomes available to BESTlogicPlus Programmable Logic
as a logic element. The elements are titled Start Output, Prestart Out, and Run Output. The predefined
functionality is available as an input to the logic. If Programmable is selected as the relay control mode,
connecting the corresponding predefined input function to the relay causes it to function as if Predefined
were selected as its relay control type. However, other logic can be combined with it to create operation
that is more versatile. If Programmable is selected for a relay, but it is not used in the logic, that relay will
never close.
An example logic scheme connecting the predefined inputs directly to the "programmable" relay outputs
for all three relays is shown in Figure 9-2.
Figure 9-2. Example Logic Scheme of Programmable Relays
Programmable
DGC-2020ES controllers have four programmable output contacts (OUT 1 through 4). An additional 24
contact outputs are provided with an optional CEM-2020 (Contact Expansion Module). An optional CEM-
2020H (Contact Expansion Module - High Current) provides 18 contact outputs.
Programmable Output Configuration
Figure 9-3 illustrates the Contact Outputs screen found in the BESTCOMSPlus Settings Explorer under
the Programmable Outputs category. If using the front panel, navigate to Settings > Programmable
Outputs > Contact Outputs.
Each output can be programmed with a text label describing its use. This label appears in BESTlogicPlus
Programmable Logic where the output is used to aid in program clarity and ease of programming.
Contact Outputs DGC-2020ES