Epson 100-88002 - page 186

Control Codes
Page 174 100-88002 Rev B
[ENQ] <35> Inquire USB Watch Dog Resets.
ASCII [ENQ] <35>
Hexadecimal 05H 23H
Decimal <5> <35>
Function The [ENQ] <35> command returns the number of USB Watch dog resets
and then resets the count to zero.
Response [ACK] <35> <41> <n>
Where
<35> Is the echo of command
<41> Length + 40
<n> The number of USB Watchdogs since the last inquire.