Advantech Adam - 4021, User Manual, Page: 118 / 286

ADAM-4000 Series User Manual 106
4018+, 4019+
5.1.14 $AA3
Name CJC Status command
Description Instructs the addressed analog input module to read its CJC
(Cold Junction Compensation) sensors and return the acquired data.
Synta x $AA3(cr)
$
is a delimiter character.
AA (range 00-FF) represents the 2-character hexadecimal
address of the analog input module which contains the CJC
Status you wish to retrieve.
3 is the CJC Status command.
(cr) is the terminating character, carriage return (0Dh).
Response >data(cr) if the command is valid.
?AA(cr) if an invalid command was issued.
There is no response if the module detects a syntax error or
communication error or if the specified address does not exist.
! delimiter character indicates a valid command was received.
? delimiter character indicates the command was invalid
AA (range 00-FF) represents the 2-character hexadecimal
address of an analog input module.
(data)
is the value that is retrieved by the module by
reading its CJC sensor. The data format, in degrees Celsius,
consists an “+” or “-” sign followed by five decimal digits
and a fixed decimal point. The resolution of the data is 0.1 ° C.
(cr)
is the terminating character, carriage return (0Dh).
Example
command: $093(cr)
response: >+0036.8(cr)
The command requests the analog input module at address
09h to read its CJC sensor and return the data. The analog
input module at address 09h responds with: 36.8 °C.