No Operation (Command 'A') - Pressure Systems 9046 User Manual

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5.2 No Operation (Command 'A')

Purpose : This command has no internal module effect. It is used as a simple method to verify
proper communications to the Model 9046 module.
Command "A"
'A' is the operation code.
Response "A" or "Nxx"
'A' for acknowledge; 'N' for negative acknowledge,
error code xx.
Description : This command is generally used as a simple 'NOP' mechanism to verify proper
communications with a module.
Example :
Command module to acknowledge module power on:
" A "
Read following response:
" A "
Note
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NUSS executes this command when you use its 'Connect' function
to open a unique TCP Socket for communicating with the module. It
uses the command to determine if the module is currently adding a
"size prefix" (or not) to each command-response or stream. NUSS
always operates the module with this "prefix" enabled - and
restores the module to its original "prefix" state when it exits (and
disconnects each "connected" module from its unique TCP Socket).
Model 9046 User's Manual
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