HP Value Serial/USB Receipt Printer II Instrukcja Użytkownika Pobierz pdf (Strona 108)

Chapter 3: Programming Commands108

User data storage

Write to user data storage

ASCII ESC ‘ m a0 a1 a2 d1 ... dm

Hexadecimal 1B 27 m a0 a1 a2 d1 ... dm

Decimal 27 39 m a0 a1 a2 d1 ... dm

Value of m: 0 – 255

Writes mbytesofdatatotheuserdatastorageashpageattheaddressspecied.Theprinterwaitsformbytesofdata

followingthe3-byteaddress,addr.

Ifanyofthememorylocationsaddressedbythiscommandarenotcurrentlyerased,thecommandisnotexecuted.

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Resultofthiswriteisreturnedinbit2ofresponsetotransmitstatuscommand1D72,n =4.

Read from user data storage

ASCII ESC 4 m a0 a1 a2

Hexadecimal 1B 34 m a0 a1 a2

Decimal 27 52 m a0 a1 a2

Value of m: 0 – 255

Readsmbytesofdatafromtheuserdatastorageashpageattheaddressspecied.Returnsmbytestotheapplication,

followedbyacarriagereturn(0x0D).Iftherangeofrequesteddataexceedsthesectorboundary,theprinterwillonlysend

thedatauptothesectorboundary.

Select memory type (SRAM/ash) where to save logos or user-dened fonts

ASCII GS “ n

Hexadecimal 1D 22 n

Decimal 29 34 n

Value of n: 48 – 53

n = 48 (ASCII n = 0) HEX 30

LoadsactivelogotoRAMonly.Thisisusedtoprintaspeciallogobutnothaveittakeupashmemory.Alogodened

followingthiscommandisnotpreservedoverapowercycle.Theprinterdisablesinterruptswhilewritingtoash.Any

commandthatcausedatatobewrittentoashshouldbefollowedbya50Msecdelaytoallowsignicanttimeforthe

write operation.

n = 49 (ASCII n = 1) HEX 31

Loadsactivelogotoashmemory.Thisisthedefaultconditionforlogoashstorage.Alogodenedfollowingthis

commandisstoredinashmemory.

n = 50 (ASCII n = 2) HEX 32

Loadsuser-denedcharacterstoRAMonly.Thisisthedefaultconditionforuser-denedcharacterstorage.Anyuser-

denedcharactersdenedfollowingthiscommandarenotpreservedoverapowercycle.

n = 51 (ASCII n = 3) HEX 33

Loadsuser-denedcharacterstoashmemory.Anapplicationmustusethiscommandtostoreuser-denedcharactersin

ashmemory.Anyuser-denedcharactersdenedfollowingthiscommandarestoredinashmemory.Auser-dened

charactercannotberedenedinashmemory.Theashmemorypagemustbeerasedbyanapplicationbeforeredening

user-denedcharacters.Formoreinformation,seetheeraseuserashsector(1D40n) command.

Specieswhethertoloadthelogosoruser-denedcharacterstologo/fontashmemoryortoRAM(volatilememory).

Theselectionremainsineffectuntilitischangedviathiscommandoruntilthepowercycles.Tospecifypermanentfont

ash,alsosend1D228101.

Related information

ThiscommandisrecognizedinNativemode.InA793andLEGACYemulations,parameterbytesgointotheprintbuffer.

1 2 ... 103 104 105 106 107 108 109 110 111 112 113 ... 154 155

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