Epson RP-U420 User Manual

ESC/POS

EXIT

RP-U420

Application Programming Guide

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ESC/POS

RP-U420 Application Programming Guide Version 1.0 Seiko Epson Corporation System Device Division

Notice: The contents of this manual are subject to change without notice

EPSON and ESC/POS are registered trademarks of Seiko Epson Corporation. Acrobat

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ESC/POS

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Usable application programs and tips

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USABLE APPLICATION PROGRAMS AND TIPS

System Processing

This example illustrates ESC/POS command functions and printing results. Item 2-1 shows a combination of receipt and journal printing. Item 2-2 shows processing to issue a Taiwan receipt. Tips include features of stamp printing and usage of the ESC o command. Note: Print samples are images of the printing results of the program samples. They do not represent the actual printing.

2-1 Journal and Receipt Combination Printing

The example shows procedures and a program sample for printing part of data on a receipt and journal at the same time. At first you need to set DIP Switch 1-8 (Printer mode selection) to Off (Standard mode); then turn on the power.

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Print Sample

Receipt Journal

Stamp

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July 6, 2000, 10:30

RP-U420 420 PS-170 170 TOTAL 590

PAID 600 CHANGE 10

#12345

←

Date and Time

Item A

Item B

←

Cutting position

July 6, 2000, 10:30 #12345

RP-U420 420 PS-170 170 TOTAL 590

Item A

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System Processing Procedures

Procedure Commands used Description

1. Initialization ESC @ Executes initialization.

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2. Print date and time ESC c 0, ESC z

RS, LF

3. Print Item A ESC z, LF Prints Item A.

4. Execute a stamp for the next receipt

5. Print Item B LF Prints Item B.

6. Issue a receipt ESC p 0, GS V

Step 4 is necessary for effective use of paper. Refer to the tips section for details.

ESC c 0, ESC o Executes a stamp for the next receipt.

ESC c 0, LF

Prints different data on receipt and journal. Jumps to the print position on journal (journal tab).

ESC z a parallel printing for the same data on both receipt and journal.

Prints a slip number, operates a drawer, cuts a receipt, feeds journal paper.

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Programming Example

PRINT #1, CHR$(&H1B);"@"; ← Initializes the printer

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PRINT #1, CHR$(&H1B);"c0";CHR$(3); PRINT #1, CHR$(&H1B);"z";CHR$(0); PRINT #1, “July 6, 2000 10:30”;CHR$(&H1E); PRINT #1, “July 6, 2000 10:30 #12345”;CHR$(&HA);CHR$(&HA); PRINT #1, CHR$(&H1B);"z";CHR$(1);

PRINT #1, "RP-U420 420";CHR$(&HA); PRINT #1, "PS-170 170";CHR$(&HA); PRINT #1, "TOTAL 590";CHR$(&HA); PRINT #1, "----------------------------";CHR$(&HA);

PRINT #1, CHR$(&H1B);”c0”;CHR$(2); PRINT #1, CHR$(&H1B);”o”;

PRINT #1, "PAID 600";CHR$(&HA); PRINT #1, "CHANGE 10";CHR$(&HA);CHR$(&HA);

PRINT #1, CHR$(&H1B);"p";CHR$(0);CHR$(2);CHR$(20); PRINT #1, “ #12345”;CHR$(&HA);CHR$(&HA); PRINT #1, CHR$(&H1D);"V";CHR$(66);CHR$(0); PRINT #1, CHR$(&H1B);”c0”;CHR$(1); PRINT #1, CHR$(&HA); END

←

Executes stamp for the next sheet

←

Feeds journal

Selects a print sheet

←

Cancels parallel printing on receipt and journal

←

Selects parallel printing on receipt and journal

←

Selects receipt

←

drawer kick-out

←

Feeds paper to the cutting position

←

Selects journal

←

Prints date and time

Item A

Stamp

Item B

Issues receipt

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2-2 Issuing Taiwan Receipt

The example shows procedures and a program sample for issuing a Taiwan receipt, which has black marks. At first you need to set DIP Switch 1-8 (Printer mode selection) to On (Taiwan mode); then turn on the power.

Print Sample

Receipt

Predefined logo

Stamp

01-01-01 #12345 RP-U420 420 PS-170 170 TOTAL 590

PAID 600 CHANGE 10

Date and Time

←

Item A

Item B

: The relationship between the

Note

paper cut position and the mark sensor position may not be exact because the paper feed pitch for this printer is 4.23 mm.

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Cutting positon

←

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System Processing Procedures

Procedure Commands used Description

1. Initialization ESC @ Executes initialization.

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2. Print details ESC c 0, ESC z

ESC d, LF

3. Execute a stamp for the next receipt

4. Issue a receipt FF Feeds a receipt to the next black mark position and cuts the receipt.

Step 3 is necessary to execute a stamp at the correct position. Refer to the tips section for details.

ESC d, ESC o Executes a stamp for the next receipt.

Prints date, slip number, and details on both receipt and journal. ESC z executes parallel printing of the same data on both receipt and

journal.

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Programming Example

PRINT #1, CHR$(&H1B);"@"; ← Initializes the printer

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PRINT #1, CHR$(&H1B);"c0";CHR$(3); PRINT #1, CHR$(&H1B);"z";CHR$(1);

PRINT #1, CHR$(&H1B);”d”;CHR$(6); PRINT #1, “01-01-01 #12345”;CHR$(&HA); PRINT #1, "RP-U420 420";CHR$(&HA); PRINT #1, "PS-170 170";CHR$(&HA); PRINT #1, "TOTAL 590";CHR$(&HA); PRINT #1, "----------------------------";CHR$(&HA); PRINT #1, "PAID 600";CHR$(&HA); PRINT #1, "CHANGE 10";CHR$(&HA);

PRINT #1, CHR$(&H1B);”d”;CHR$(23); PRINT #1, CHR$(&H1B);”o”; PRINT #1, CHR$(&HC); END

←

Executes stamp for the next sheet

←

Issues a receipt

Selects a print sheet

←

Selects parallel printing on receipt and journal

←

Feeds 6-line

←

Feeds 23-line

←

Prints details

Stamp

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Tips

RP-U420 has a stamp function. ESC o executes a stamp once. When printing a stamp, you need to set line spacing, depending on the position of each mechanism.

Positions for print head, stamp, and cutter

←

autocutter

manual cutter

8-line

←

print head

11-line

stamp

(

When DIP switch 1-7 is Off)

If you want to print characters just below the stamp after executing it, you need to feed 12 lines in advance.

1. Execute a stamp (ESC o).

2. Feed 12 lines (ESC d 12).

3. Print data (pint data + LF).

When DIP switch 1-7 is On)

stamp

8-line

←

11-line

print head

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However, if you do the procedures above at the beginning of a receipt issue transaction, there will be space of about 14 lines above the stamp. As the program examples in this section show, if printing of a stamp for the second receipt is executed during the receipt printing for the first receipt, you can print a receipt without unnecessary spaces. If you use the autocutter, follow the steps below.

1. Print data up to the line so that the rest of the lines to be printed are 5 lines from the edge of the receipt.

2. Execute a stamp (ESC o).

3. Print data for the last 5 lines (print data + LF).

4. Feed paper to the cutting position and execute a paper cut (GS V). Note: 5 lines used in the procedures are a reference value.

When deciding the stamp position in the Taiwan mode, you need to take the current position of the black mark into consideration. In Taiwan mode, feed paper to the black by FF and execute a paper cut.

Paper position after FF is executed

←

autocutter or manual cutter position

1 to 6 mm (*)

(*) The relationship between the paper cut position and the mark sensor position may not be exact because the paper feed pitch for this printer is

4.23 mm.

When issuing a black mark receipt, follow the same procedures as when you print a stamp for the second receipt during receipt printing for the first receipt. Refer to 2-2, Issuing Taiwan Receipt, for details.

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Definitions

DEFINITIONS

(1) Normal commands

Normal commands are all the commands except real-time commands. The normal commands are stored in the receive buffer temporarily and then processed sequentially.

(2) Real-time commands

Real-time commands are the commands that consist of a DLE extension (such as DLE EOT or DLE ENQ). The realtime commands execute processing when received. After executing, they are stored in the receive buffer and then discarded as undefined codes when the normal commands are processed.

(3) Receive buffer

The receive buffer is used to store data from the host computer. All received data is stored in this buffer and processed in the order received. Buffer capacity depends on the printer model used.

(4) Print buffer

The print buffer is used to store image data for printing.

(5) Print buffer-full

This is the state which occurs when the print buffer becomes full.

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(6) Print buffer-full printing

If new print data (such as characters or bit images) or horizontal tabs are processed in standard mode when the print buffer is full, the image data already stored in the print buffer is printed and a line feed is executed. This is the same operation as LF. The data (print data or horizontal tab) that causes the print buffer full is processed from the beginning of the next line.

(7) Beginning of the line

The beginning of the line means that no data exists in the print buffer, and the beginning of the line is the left margin.

(8) Printable area

This is the maximum printable area specified for each printer model.

(10) Ignoring a command

This is the printer state in which the printer does nothing after receiving all codes, including parameters.

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(11) Horizontal/vertical direction

Horizontal direction is the direction which is perpendicular to the paper feed direction. Vertical direction is the paper feed direction.

(12) Baseline

The baseline for character sets that are 9 dots high (for example, 7 × 9 and 9 × 9) is the invisible line marking the bottom of the character matrix (the bottom of the lowest dot possible), but for other character sets, the baseline is the bottom of all characters, except that descenders, such as the bottom parts of “g” and “y,” are below the baseline.

(13) Setting commands

The commands that change printer status by processing a command and affect printer operation and print results thereafter. The commands that can specify enhanced characters, set paper feed amount, and select a character are setting commands and some of the normal commands are setting commands.

(14) Executing commands

The commands that affect printer operation and change the printer status temporarily but do not affect the following printer operation. Functions of printing, paper cutting, and status transmission are executing commands and the real-time commands and some of the normal commands are executing commands.

(15) MSB

Most Significant Bit

(16) LSB

Least Significant Bit

(18) “Reserved“ bit

“Reserved” bits are as follows:

• Bit which will be used for an extended function in the future.

• Bit which has a function in the ESC/POS specification; however, the printer does not support the function. Use a bit with a value indicated in a table.

(19) “Fixed” bit

Use a bit only with a value indicated in a table.

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Character code tables

CHARACTER CODE TABLES

SP in a table represents space. See Using the character code tables for information on how to read these tables.

Page 0 (PC437: U.S.A., Standard Europe) (International character set: U.S.A.)

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Page 1 (Katakana)

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Page 2 (PC850: Multilingual)

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Page 3 (PC860: Portuguese)

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Page 4 (PC863: Canadian-French)

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Page 5 (PC865: Nordic)

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Page 16 (WPC1252)

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Page 17 (PC866: Cyrillic #2)

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Page 18 (PC862: Latin2)

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Page 19 (PC858: Euro)

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