Command lines begin with the applicable command character, followed by the
characters and numbers indicating levels, inputs, and outputs. Command lines must
always end with “T” (Take) command, which tells the system to execute the
command.
Example of a command line: CL1I2O3T
(C)Change on(L1) Level 1,(I2)Input 2 to(O3) Output 3, (T) Take to execute the
command.
Generating Commands (Execute, Disconnect, Status)
Executing a switch (Change command) enables the connection between an input
(source) signal and one or more output (destination) devices. Disconnecting a switch
deactivates that connection. The Status command verifies that a switch has executed
correctly or that a signal has been correctly routed to multiple outputs.
Note: If your Precis
LT
has a control panel, BCS commands will work even if the
control panel is locked, but cannot be used to unlock the control panel.
Command Line Formats Quick Reference
Note: The formats and examples below all omit the Level command.
Function Command Example
Execute a switch
CI#O#T
or CO#I#T
CI1O1 2T routes Input 1 to Outputs 1 and 2
Disconnect a
switch
DO#T
or DI#T
DO7T disconnects Output 7
DI15T disconnects Input 15 and all outputs connected to it
Verify switch
status (result
appears in
parenthesis)
SO#T
or SI#T
SO6T(7) verifies Output 6 as routed from Input 7
SI1T(1 2) verifies Input 1 as routed to Outputs1&2
SI3T( ) verifies Input 3 is not routed
SO1T( ) verifies Output 1 is not receiving a signal from an input
Execute Commands
Execute commands begin with “C” initiating a Change command for routing a
switch. The characters and numbers that follow the “C” command tell the system
which level(s) to use and which inputs and outputs to connect. The last character is
“T” (Take) which tells the system to execute the command.
BCS Serial Control Protocol 42
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