Unit 4: Operation
FLASH MEMORY DOWNLOAD MODE
A Flash ROM internally stores and deletes font data and custom designed character data. The storage capacity for custom characters is 95 for each type of 16 x 16, 22 x 22, and 24 x 24 dots.
There are four transmission protocols for font download: (1) Download Font Storage, (2) Download Font Deletion, (3) Download Font Information Aquisition, (4) Storage Custom- Designed Character. The printer return status is set between STX (02H) and ETX (03H), and transferred in 3 bytes. Note that the return status for the font data transfer when storing font is 1 byte of ACK (06H). All status data transferred from the host are set between STX (02H) and ETX (03H), and transferred in 3 bytes.
DOWNLOAD FONT REGISTRATION
STATUS DESCRIPTION |
| ACSII |
| HEX | TRANSFER | |
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Not Already Stored |
| A |
| 41 | Printer to Host | |
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Already Stored |
| B |
| 42 | Printer to Host | |
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Storage Area NG |
| N |
| 4E | Printer to Host | |
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Store Font |
| 0 |
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| 30 | Host to Printer |
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Do Not Store Font |
| 1 |
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| 31 | Host to Printer |
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Ready For Storage Status |
| O |
| 4F | Printer to Host | |
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Font Storage Completed Normally |
| E |
| 45 | Printer to Host | |
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Font Storage Cancelled |
| S |
| 53 | Printer to Host | |
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Font Storage Completed Abnormally |
| Z |
| 5A | Printer to Host | |
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DOWNLOAD FONT DELETION |
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STATUS DESCRIPTION |
| ACSII |
| HEX | TRANSFER | |
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Not Already Stored |
| A |
| 41 | Printer to Host | |
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Already Stored |
| B |
| 42 | Printer to Host | |
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Delete Font |
| 0 |
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| 30 | Host to Printer |
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Do Not Delete Font |
| 1 |
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| 31 | Host to Printer |
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Font Deletion Completed Normally |
| E |
| 45 | Printer to Host | |
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Font Deletion Cancelled |
| S |
| 53 | Printer to Host | |
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Font Storage Completed Abnormally |
| Z |
| 5A | Printer to Host | |
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DOWNLOAD FONT INFORMATION AQUISTION |
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STATUS DESCRIPTION | ACSII |
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| HEX | TRANSFER | |
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Not Already Stored | A |
| 41 | Printer to Host | ||
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Already Stored | B |
| 42 | Printer to Host | ||
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Font Information Transferred OK | 0 |
| 30 | Host to Printer | ||
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Number of Transferred Data |
| 6 bytes | Printer to Host | |||
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Font Information | Font Info Data + Font Data Info | Printer to Host | ||||
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SATO M5900RVe Operator Manual | PN 9001125A | Page |