Star Micronics Dot Impact Printer - Manual (Page 10)

3-2 STAR Command Specifications
Rev. 0.70
3-2 Exception processing
1) Undefined codes
Codes from <00>H to <1F>H are targeted.When codes not defined as commands in this region are received, they are
discarded.
(Ex.) If processing the data string of <30>H<31>H<03>H<32>H<0A>H<33>H, the printer will discard <03>H as an
undefined code.
2) Undefined commands
When data continuing the codes of ESC and FS are codes not defined as commands, ESC and FS and subsequent
codes are discarded.
(Ex.) If processing the data string of <30>H<1B>H<22>H<31>H<32>H, the printer will read and discard <1B>H<22>H
as an undefined command.
3) Settings outside of the defined area
Processing values outside of the defined area in commands accompanying arguments, those commands are ignored
and the preset values are unchanged.The processing of commands is terminated at the point values outside of the de-
fined region are processed in arguments having a plurality of commands.
(Ex.) If processing the data string of <1B>H<52>H<15>H, the printer will discard the data string of <1B>H<52>H<15>H
because although <1B>H<52>H is defined as a commands (ESC R) , the argument <15>H is outside of the definition.
Therefore, the international character set that is already set experiences no change.