HP Value Serial/USB Receipt Printer II Manual do Utilizador descarregar pdf (Página 111)

Chapter 3: Programming Commands 111

Erase user ash sector

ASCII GS @ n

Hexadecimal 1D 40 n

Decimal 29 64 n

Value of n: 49 – 51

n = 49 (ASCII n = 1) HEX 31

Thiscommanderasesall64Kashmemorysectorsallocatedtouser-denedcharacterandlogosstorage.Thosesectors

shouldbeerasedintwosituations:whenthelogodenitionareaisfullandanapplicationisattemptingtodenenew

logos,andwhenanapplicationwantstoreplaceoneuser-denedcharactersetwithanother.Inbothcases,alllogosand

charactersetdenitionsareerasedandmustberedened.

n = 50 (ASCII n = 2) HEX 32

This command erases all sectors available for user data storage.

n = 51 (ASCII n = 3) HEX 33

This command erases all sectors available for permanent fonts.

Erasesapageofashmemoryandsendsacarriagereturnwhentheoperationiscomplete.

Related information

Seecommand“Flashmemoryusersectorsallocation”(1D2255n1n2).

Seealsocommand“Expandedashmemoryallocation”(1D2280)and“Selectasharea”(1D2281n).

Important: While erasing ash memory, the printer disables all interrupts, including communications. To provide feedback

to the application, the printer responds to the application when the erase is complete with a 0D (Hex). After sending the

erase user ash sector (1D 40 n) command, an application should wait for the response from the printer before sending

data. Otherwise, data will be lost. If an application is unable to receive data, it should wait a minimum of ten seconds after

sending the erase user ash sector (1D 40 n) command before sending data.

Lock permanent font ash area

ASCII GS 0xF0 0x10 n

Hexadecimal 1D F0 10 n

Decimal 29 240 16 n

Value of n: n = 0x00 lock permanent font ash (default)

n = 0x01 unlock permanent font ash to erase or delete

This command allows or prevents the permanent font area to be erased.

Note: This only affects the 1D 40 33 commands and downloading a font to permanet font area when a font already exists

with the same ID.

Flash download

Thesecommandsareusedtoloadrmwareintotheprinter.

Thecommandsarelistedinnumericalorderaccordingtotheirhexadecimalcodes.Eachcommandisdescribedandthe

hexadecimal,decimal,andASCIIcodesarelisted.

Therearetwowaystoenterthedownloadmode.

1. Whiletheprinterisrunningnormally,sendthecommand,“Switchtoashdownloadmode”(1B5B7D)toleave

normal operation and enter the download mode.

2. Iftheashiffoundcorruptedduringlevel0diagnosticsthedownloadmodeisautomaticallyenteredaftertheprinter

has reset.

Theprinternevergoesdirectlyfromthedownloadmodetonormalprinteroperation.Toreturntonormalprinteroperation

either the operator must turn the power off and then on to reboot or the application must send a command to cancel

download mode and reboot.

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