Specifications
  EFP9800 ESC/POS Commands 
3255 4073– 002  6– 53 
Identifying Auto Status Back Bytes Transmitted by the Printer 
The printer transmits status to the host computer in several ways as shown in 
the following table: 
Printer response to a status request from host computer 
Pattern of status bytes 
sent by printer 
Transmit Peripheral Device Status (1B 75)  0**0**** 
Transmit Paper Sensor Status (1B 76)  0**0**** 
Transmit Printer ID (1D 49)  0**0**** 
Transmit Status (1D 72)  0**0**** 
Real Time Status Transmission  0**1**10 
Auto Status Back (1D 61) 
 First Byte 
 Following Bytes 
0**1**00 
0**0**** 
XON (Communication Protocol)  00010001 
XOFF (Communication Protocol)  00010011 
Note that the pattern of the second, third, and fourth bytes of the Auto Status 
Back command is identical to the Transmit Status commands (first four 
commands listed in the table). This can be confusing. When using the Auto 
Status Back command, look for the pattern of the first byte. It will always 
precede the following three bytes. Do not confuse the last three bytes of the 
Auto Status command with the Transmit Status commands. 










