Loa -- Define Behavior For Logic Output Activated State - Polycom Vortex EF2201 Command List

Example
T01LO*00000000000000000000
T01LO*10101010101010101010
T01LO*?
8.53. LOA -- Define Behavior for Logic Output Activated
State
This command is used to define the conditions under which a given logic output pin goes into the active
state. By default the logic output pins are active high. Active high is the default because it would light
an LED connected to the output when the output was in the active state. The polarity of the logic
output pins can be changed with the
The syntax of this command allows one to use one of the boolean channel commands to determine the
state of the logic output pin. The commands that are valid for use with LOA are AGC, MUTEO, MUTEI,
and NC. Each command must be specified using the wildcard character, *, for the channel number.
Each character in the array string is compared to the status of the channels in the Vortex. A 1 or a 0 in
the string means that the status for the corresponding channel must match that character for the
condition to be true. A period character, ., in the string is a don't care, meaning that the condition will
be true no matter what the status for that channel is. A + or - character works as an OR function, with
+ corresponding to a 1 in the channel status and - corresponding to a 0. If any + or - characters are in
the string, at least one channel's status must match for the condition to be true.
The special characters ., +, and - are not particularly useful on the EF2201, since there is only one
input channel and one output channel. The special characters are more useful on the other EF22xx
devices that have more inputs and outputs. Typically, only the 0 and 1 characters are used with this
command on the EF2201.
Consider the following example. In this example, we also use the
LOA command except that it sets the condition for the logic output to be in the deactivated state.
Normally, you must set both the LOA and
our example, we issue the following commands:
T01LOA10,MUTEI*1
T01LOD10,MUTEI*0
Description Status Message
Set all logic
T01LO*00000000000000000000
outputs low.
Set even
numbered logic
output pins low
T01LO*10101010101010101010
and odd
numbered logic
output pins high.
T01LO*abcdefghijklmnopqrst, where a-t
Query current
state of logic are each 0 or 1 depending on the current state
outputs
of the corresponding logic output.
command.
LOP
commands in order to make use of a logic output pin. In
LOD
command, which is just like the
LOD