NewTek TriCaster Advanced Edition User Guide - Manual (Page 280)

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S ENDING GPI C OMMANDS
A special macro command allows you to send GPI signals to external devices and systems via network-
connected GPI interface devices (such as the eBOX™ from JLCooper Electronics).
GPI macro entries are formatted as shown below:
Delay (ms) Shortcut Value Key 1 Value 1 etc.
#### gpi name GPI_pin# boolean
 Delay – the interval, in milliseconds, between the time when the command on the prior line (if any)
was issued to the system, and execution of this line.
 Shortcut – Use the entry “gpi” in this field to send a GPI signal.
 Value – The shortcut value is the name of the GPI device (defined earlier in gpi_setup.xml) that you
want the signal defined on this line to address.
 Key # (0 – n) – The value you enter in this field identifies a target pin on the external DVI device to
receive a signal defined in the following field. The entry should be formatted as “pin#” (e.g., “pin1”,
without quotation marks).
 Value # (0 – n) – This value controls the contact closure state (on or off) for the GPI device pin
identified by the preceding key. The value can be entered variously as “1” or “0” , “on” or “off”,
“true” or “false” (without quotations).
A typical entry might look like the following:
Delay (ms) Shortcut Value Key 1 Value 1 etc.
500 gpi jlcooper pin12 1
Hint: Multiple GPI pins can be targetted simultaneously by key/value pairs entered on a single line. Alternatively,
some GPI devices require a GPI ‘pulse’ of a specified duration. In such a case, you might send an “on” command
on one line, followed – after a suitable delay – by an “off” command sent to the same pin.