Toshiba B-EP Series Interface Specification page 617

8.11.4 RECEIVE BUFFER FREE SPACE STATUS REQUEST COMMAND [ESC] WB
Function Sends information on the printer status and the free space of the receive buffer to the
host.
Format [ESC] WB [LF] [NUL]
Explanation (1) This command makes the printer send information on its status and free space of
the receive buffer, regardless of the setting of the Status Response parameter.
(2) The status to be transmitted is the current printer status, and indicates the latest
status only. The remaining count indicates the remaining print count of the batch
currently being printed only. No remaining count of the batch waiting to be printed
is transmitted.
(3) Free space of the receive buffer for the interface which sent this command, is
returned to the host.
[IrDA: TEC Protocol] Data to be transmitted (fixed at 22 bytes)
STX
Printer ID
02H 3xH
Receiving buffer space
3xH 3xH
[IrDA: IrCOMM, IrDAIr: OBEX, USB, RS-232C, Bluetooth, Wireless LAN]
Data to be transmitted (fixed at 23 bytes)
SOH STX Printer status Status type Remaining No. of labels
01H 02H 3xH
Receiving buffer space
3xH 3xH
Status Remaining No. of labels
3xH 33H 3xH
Entire receiving buffer space
3xH 3xH 3xH 30H
3xH 33H
Entire receiving buffer space
3xH 3xH 3xH 30H
8-90
CHAPTER 8 ESC/POS MODE (INTERFACE COMMANDS)
3xH 3xH 3xH 32H
30H 35H 31H 32H
3xH 3xH 3xH 3xH 32H 33H
30H 35H 31H 32H
B-EP Series
Length
32H
CRC
xxH xxH
Length
CR LF
0DH 0AH