Ovation Software Label Printer - Manual (Page 61)

Ovation
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2 D-1
Appendix D
Error Codes
The error codes that may be transmitted by the printer are described here.
Lowercase "v"
There is an input buffer overflow situation.
Uppercase "R"
This code is sent every time the printer is turned on. It signals that
there was a hardware reset.
Uppercase "T"
This code signals that there was a software reset. A software reset
results from sending the <SOH># command sequence to the printer or
by doing a front panel reset.