Epson TM-T20, Technical Reference Manual

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NV Memory (Non-Volatile Memory)
The pr int er's NV memory s t ores da t a eve n af t er t he pr int er power i s tu r n ed off. NV memory
co nt a in s t he follow ing memory areas for t he u ser:
• NV g raph i cs memory
• User NV memory
• Memory sw it ches
• R/E (Rece i p t E n ha n ceme nt )
• User-def in ed pa g e
• Ma int e n a n ce co unt er
NV Graphics Memory
Graph i cs, s u ch as shop lo g os t o be pr int ed o n rece i p t s, ca n be re gi s t ered. Eve n w it h a ser i al
int erface model whose comm uni ca ti o n speed i s low, h ig h speed g raph i c pr inting i s poss i ble.
Use t he TM-T20 U ti l it y t o re gi s t er g raph i cs. Yo u ca n also u se t he TM-T20 U ti l it y or t he NV
g raph i cs in forma ti o n pr int mode t o pr int a n d co n f i rm t he re gi s t ered g raph i cs.
User NV Memory
Yo u ca n s t ore a n d read t ex t da t a for m u l ti ple p u rposes, s u ch as for s t or ing a n o t e in cl u d ing
c u s t om i z ing or ma int e n a n ce in forma ti o n of t he pr int er.
Use ESC/POS comma n ds t o s t ore a n d read t he t ex t da t a.
Memory Switches
W it h t he memory sw it ches, wh i ch are sof t ware sw it ches for t he pr int er, yo u ca n co n f igu re
var i o u s se tting s of t he pr int er. For in forma ti o n abo ut t he memory sw it ch, see "Se tting t he
Memory Sw it ches/Rece i p t E n ha n ceme nt " o n pa g e 43 .
NV memory can be rewritten about 100,000 times. As a guide, NV memory rewriting should
be used 10 times or less a day when you program applications.
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For information about the TM-T20 Utility, see the TM-T20 Utility User’s Manual.
•
For information about how to use the NV graphics information print mode, see "NV
Graphics Information Print Mode" on page 69 .
For information about ESC/POS commands, see the ESC/POS Application Programming
Guide.