Visara Master Console Center Scripting Guide - Manual (Page 94)

Chapter 5 Script Commands
Scripting Guide 94
DOUNIT
Syntax:
DOUNIT( %Port[, %Operation]) ==> %DOSwitch
Description:
Controls the device connected to a DO unit.
Action: The switch on the specified DO unit port is opened or closed, thereby
changing the status of the connected equipment. This effectively
switches the equipment ON and OFF.
Parameters:
%Port. Numeric expression. The assigned power port number to
which the CPU is connected. Refer to Ports on page 24 for more
information.
%Operation. Numeric expression. Optional. ON closes the switch
and OFF opens the switch. If not specified, the DO switch setting
remains the same.
Returns:
Numeric value, the setting of the DO switch.
Value
Meaning
0 OFF
1 ON
If the Operation parameter is specified, the return value is the old DO
switch setting value.
If the Operation parameter is not specified, the return value is the
current DO switch setting value.
Note: This is not the current status of the device connected to the DO
unit—use DIUNIT to retrieve that value.
Notes:
1. Refer to Manifest Constants on page 42 for the constants reference
list.
2. This function is not commonly used.
Example: DOUNIT( 4, ON)
%DOSwitch := DOUNIT( 4, ON)
%DOSwitch := DOUNIT( 4)
See Also:
DIUNIT