Advantech Data Acquisition Modules ADAM 4000 - Manual (Page 271)

Digital I/O and Relay Output
Counter/Frequency Command Set
7-36 ADAM 4000 Series User’s Manual
#AAN
Name Read Counter or Frequency Value command
Description Instructs the addressed counter/frequency module at
address AA to read the counter or frequency value of
counter 0 or counter 1 and return the acquired data.
Syntax #AAN(cr)
# is a delimiter character.
AA (range 00-FF) represents the 2-character hexadecimal
address that you will access to.
N represents the counter number.
N=0 represents counter 0
N=1 represents counter 1
(cr) is the terminating character, carriage return (0Dh).
Response >data(cr) if the command is valid.
?AA(cr) if an invalid operation was entered.
There is no response if the module detects a syntax or
communication error, or even if the specified address does
not exist.
? is a delimiter character which indicates an invalid
command.
AA (range 00-FF) represents the 2-character hexadecimal
address of the module.
(data) is the value that is retrieved by the module from
reading counter 0 or counter 1. The data format consists of
eight hexadecimal characters.
(cr) is the terminating character, carriage return (0Dh).
Example command: #120(cr)
response: >000002FE(cr)
The command requests the counter/frequency module at
address 12 to read the counter 0 and return the data. The
counter/frequency module at address 12 responds with
value 000002FE (hexadecimal) of counter 0 which is also
equivalent to 766 (decimal).
4080, 4080D