Programming
87
NI Series WebConsole & Programming Guide
IR/Serial Send_Commands (Cont.)
Command Description
PON
Turn On a device connected
to an IR port based on the
status of the corresponding
I/O Link input.
If at any time the IR sensor input reads that the device is OFF (such as if one
turned it off manually at the front panel), IR function 27 (if available) or IR
function 9 is automatically generated in an attempt to turn the device back ON.
If three attempts fail, the IR port will continue executing commands in the buffer
and trying to turn the device On.
If there are no commands in the buffer, the IR port will continue trying to turn
the device ON until a 'POF' or 'POD' command is received. If the IR port fails to
turn the device ON, a PUSH and RELEASE is made on channel 254 to indicate
a power failure error.
You can only use the 'PON' and 'POF' commands when an IR device has a
linked I/O channel. Channel 255 changes are disabled after receipt of this
command.
PON (Cont.) Syntax:
SEND_COMMAND <DEV>,"'PON'"
Example:
SEND_COMMAND IR_1,"'PON'"
Sends power up IR commands 27 or 9 to the IR_1 port.
PTOF
Set the time duration
between power pulses in
.10-second increments.
This time increment is stored in permanent memory. This command also sets
the delay between pulses generated by the 'PON' or 'POF' send commands in
tenths of seconds. It also sets the delay required after a power ON command
before a new IR function can be generated. This gives the device time to power
up and get ready for future IR commands.
Syntax:
SEND_COMMAND <DEV>,"'PTOF',<time>"
Variable:
time = 0 - 255. Given in 1/10ths of a second. Default is 15 (1.5 seconds).
Example:
SEND_COMMAND IR_1,"'PTOF',15"
Sets the time between power pulses to 1.5 seconds for the IR_1 device.
PTON
Set the time duration of the
power pulses in
.10-second increments
This time increment is stored in permanent memory. This command also sets
the pulse length for each pulse generated by the 'PON' or 'POF' send
commands in tenths of seconds.
Syntax:
SEND_COMMAND <DEV>,"'PTON',<time>"
Variable:
time = 0 - 255. Given in 1/10ths of a second. Default is 5 (0.5 seconds).
Example:
SEND_COMMAND IR_1,"'PTON',15"
Sets the duration of the power pulse to 1.5 seconds for the IR_1 device.