Winco DGC-2020 - Manual (Page 181)

CAUTION
Modifying a logic scheme in BESTCOMSPlus does not automatically make that
scheme active in the DGC-2020. The modified scheme must be uploaded into
the DGC-2020. See the paragraphs on Sending and Retrieving Logic Schemes
later in this section.
PROGRAMMING BESTlogic+
BESTCOMSPlus is used to program BESTlogic+. Using BESTCOMSPlus is analogous to physically
attaching wire between discrete DGC-2020 terminals. To program BESTlogic+, use the Settings Explorer
within BESTCOMSPlus to open the BESTlogic+ Programmable Logic tree branch as shown in Figure 5-1.
The drag and drop method is used to connect a variable or series of variables to the logic inputs, outputs,
components, and elements. To draw a wire/link from port to port (triangles), click the left mouse button on
a port, pull the wire onto another port, and release the left mouse button. A red port indicates that a
connection to the port is required or missing. A black port indicates that a connection to the port is not
required. Drawing wires/links from input to input or output to output is not allowed. Only one wire/link can
be connected to any one output. If the proximity of the endpoint of the wire/link is not exact, it may attach
to an unintended port.
If an element is disabled, it will have a yellow X on it. To enable the element, navigate to the settings
page for that element.
The view of the Main Logic, Physical Outputs, and Remote Outputs can be automatically arranged by
clicking the right mouse button on the window and selecting Auto-Layout.
The following must be met before BESTCOMSPlus will allow logic to be uploaded to the DGC-2020:
 A minimum of two inputs and a maximum of four inputs on any multi-port (AND, OR, NAND, NOR,
XOR, and XNOR) gate.
 A maximum of five logic levels for any particular path. A path being an input block or an output side of
an element block through gates to an output block or an input side of an element block. This is to
include any OR gates on the Physical Output or Remote Output tab/pages, but not the matched pairs
of Physical Output blocks or Remote Output blocks.
 Only ten gates per logic level. All output blocks and input sides of element blocks are at the maximum
logic level of the diagram. All gates are pushed forward/upwards in logic levels and buffered to reach
the final output block or element block if needed.
 At all levels there can only be 64 used link/wired or endpoints. Endpoints being inputs, outputs, both
sides of element blocks.
Three status LEDs are located in the lower right corner of the BESTlogic+ window. These LEDs show the
Logic Save Status, Logic Diagram Status, and Logic Layer Status. Table 5-4 defines the colors for each
LED.
Table 5-4. Status LEDs
LED Color Definition
Yellow Logic has changed since last save.
Logic Save Status
(Left LED)
Green Logic has NOT changed since last save.
Red Requirements NOT met as listed above.
Logic Diagram Status
(Center LED)
Green Requirements met as listed above.
Red Requirements NOT met as listed above.
Logic Layer Status
(Right LED)
Green Requirements met as listed above.
9400200990 Rev K DGC-2020 BESTlogic+ Programmable Logic 5-19