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Status Output Signal Connector

The HVCPU board includes a CPU LED that emits different blinking patterns to indicate the status of the controller. The execution conditions that are indicated by this LED are described in the Status LED and Status Output Signal section of this manual.

If the controller is embedded, an external LED can be connected to a Digital Output Signal and the blinking function can be mapped to this signal.  As a convenience, the 8^th Digital Output (GPL signal 20) is duplicated in a two-pin header. This permits an LED to be easily wired to the controller without having to breakout this signal from the Digital Outputs Connector.

Figure 17-41: Two-Pin Connector

To configure the 8^th Digital Output Signal to blink in synchronization with to the controller status, the "Power State DOUT" (DataID 235) value in the controller's Parameter Database should be set to "20." By default, the 8^th Digital Output Signal is software configured as "sinking." In order to drive an LED, this signal must be configured as "sourcing." See the section on the Digital Outputs Connector for information on reconfiguring this signal.