Epson ESC Manuale Utente Scaricare il pdf (Pagina 203)

C-61

If any errors occur during the read operation, the answer to the status request (ESC j)

will be:

ESC r r

no character found

ESC r q

read/check error

In a magnetic read operation, it may happen that all the data in the read answer is

correct (no DEL in the data field), but a read error is indicated when the status request

is made. This is caused by the detection of an error in the LRC calculation, so we

recommend that a read command should always be followed by a status request.

Since after the execution of the command the position of the document is unknown, its

subsequent positioning must be given as an absolute position.

The command is not accepted (command specification error) if it is sent inside a

printing field or the option is not present.

ESC t data GS

Data to be recorded on the magnetic stripe. (Olivetti PR2, PR40+, 2845)

ASCII Code ESC t data GS

Hexadecimal Value 1B 74

data

Decimal Value 27 116 data 29

Sets the data to be recorded according to the previously selected standard (from the

line or the Set-Up). The command is not accepted (command specification error) if:

• It is sent inside a printing field.

• There are more than 105 data items to be recorded in a single field or 45 in field

duplication.

• The data is not in column 3 of the ASCII codes.

• It is not followed by ESC \.

• A device other than the front paper stand is selected.

• The option is not present.

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Epson ESC Manuale Utente Pagina 203