EFP9800 ESC/POS Commands

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:

 

Pattern of status bytes

Printer response to a status request from host computer

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

0**1**00

Following Bytes

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.

3255 4073– 002

6– 53

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Image 143
Unisys EFP9800 manual Sent by printer