Tally Genicom Matrix Printer - Manual (Page 330)

Fill Character NUL
Data Structure ASCII NUL fill character without further meaning
hex. 80
dec. 128
Start of Text Block STX
Data Structure ASCII STX start of text block
hex. 02
dec. 2
Description Start of a text block.
With this code any error message (parity error, memory overflow) is cleared.
This code concerns only serial data transfer with ENQ/STX protocol.
94 Miscellaneous