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Rev. A 4-7 Programming Samples
UB-E02 Technical Reference Guide
4.7 Printer Operation by the UDP Commands
By using the UDP commands, the following information can be received in order to recover
from abnormal operations and errors.
4.7.1 Commands Packets
The following values are replied for the packet reply result codes. Check the results in an
application.
❏ 0000h: Normal end
❏ FFFEh: No device requested
❏ FFFFh: Function requested are not supported
Function Code Packet Function
03-0000 Q Acquires basic information
03-0010 Q Acquires status
03-0011 C Off-line forced transmission
03-0012 C Reset
03-0013 C Buffer flash
03-0016 C Clears connection time-out timer
Off-set Size Packet Transmission Packet Reply
0 5 Character string “EPSON” Character string “EPSON”
51 Packet type:
’Q’: Query
’C’: Command
Packet type reply:
’q’: Query reply
’c’: Command reply
61 Device type (0 × 03 fixed) Device type (0 × 03 fixed)
71 Device number (0 × 00 fixed) Device number (0 × 00 fixed)
8 2 Function number Function number
10 2 0 × 00, 0 × 00 fixed Result code
12 2 Length (n) Length (n)
14 n Command parameter Reply data