This command provides a wealth of information about the printers current status. The command will always receive a response unless the printer is offline (powered down, disconnected, etc.) or paper is actively being fed through the printer. A numeric argument is provided which controls the meaning of each bit in the returned byte(s). There is some duplication between fields for legacy support reasons but you effectively have access to all error and status conditions.
See realtime status examples on Github: Thermal Talk API
Real Time Status -
$10 $04 ¶
Transmits the printer status in real time.
Hex $10 $04 n
ASCII DLE EOT n
Decimal 16 04 n
- This command will respond with the current real-time status of the printer. It will be processed in order of reception and after any current printing is complete.
n = 1 , 2, 3, 4
n Status 1 Transmit the printer status 2 Transmit the off-line printer status 3 Transmit error status 4 Transmit paper roll sensor status
n=1 (hexadecimal $01) Printer Status:
BIT OFF/ON HEX DECIMAL DESCRIPTION 0 - - - Reserved 1 - - - Reserved 2 - - - Reserved 3 Off 00 0 Online On 08 8 Offline 4 - - - Reserved 5 - - - Reserved 6 - - - Reserved 7 - - - Reserved n=2 (hexadecimal $02) Offline Status:
BIT OFF/ON HEX DECIMAL DESCRIPTION 0 - - - Reserved 1 - - - Reserved 2 - - - Reserved 3 - - - Reserved 4 - - - Reserved 5 Off 00 0 Paper is present On 20 32 Printing stopped due to paper end 6 Off 00 0 No error On 40 64 Error 7 - - - Reserved
Error: This bit means that any error has been reported.
n=3 (hexadecimal $03) Error Status:
Error Status: This will always return $00 since no errors in Phoenix are auto-recoverable.
n=4 (hexadecimal $04) Paper Roll Sensor Status:
HEX DECIMAL DESCRIPTION 1E 30 Paper low 72 114 Paper not present Default:
Example of No Paper: write("\x10\x04\x04") # Paper Roll Status >>> 0b01110010 # $72 or 114, this means that there is no paper Example of Low Paper: write("\x10\x04\x04") # Paper Roll Status >>> 0b00011110 # $1E or 30, this means that the paper level is low