Character Return(0x0D) for denote the end of response
Exapmle
Command
$01S0502
Response
!01(cr)
Description
The hexadecimal 02 equals to binary 0010, the RTD input
Module in slot 2 of the I-8000 system at address 01h that set
channel multiplexing: channel 1 enabled and channel 0,2,3 disabled.
The response indicates the command is valid.