Star Micronics SCP700 User Manual

COMBINATION PRINTER

SCP700 SERIES

Programmer’s Manual

Trademark acknowledgments

SCP700

: Star Micronics Co. Ltd.

ESC/POS, TM-295, TM-T85

: Seiko Epson Corporation

Notice

• The contents of this manual are subject to change without notice.

• All efforts have been made to ensure the accuracy of the contents of this manual at the time of printing. However, should any errors be found, STAR would greatly appreciate being informed of them.

• The above notwithstanding, STAR can assume no responsibility for any errors in this manual.

TABLE OF CONTENTS

Chapter 1: Outline ........................................................................................1

Chapter 2: DIP Switch Settings ..................................................................2

Accessing the DIP switches ........................................................2

Available DIP switch settings .....................................................3

Chapter 3: Memory Switch Settings ...........................................................6

Chapter 4: Control Panel Operations ........................................................7

Indicator lights ............................................................................7

Buttons ........................................................................................8

Producing a test print ..................................................................8

Adjusting the slip printer’s dot alignment ..................................9

Hexadecimal dump ...................................................................11

Errors ........................................................................................11

Chapter 5: Standard Serial Interface .......................................................13

Standard serial interface pins and signal names .......................14

Interface connections ................................................................15

Data protocol .............................................................................16

Chapter 6: Optional Interface ...................................................................21

Optional serial interface ............................................................21

Optional serial interface pins and signal names ........................22

Interface connections ................................................................23

Data protocol .............................................................................23

Optional parallel interface ........................................................24

Optional parallel interface pins and signal names ....................25

Chapter 7: Peripheral Unit Driver Circuit ..............................................27

Modular plug .............................................................................27

Drive circuit ..............................................................................28

Chapter 8: Automatic Cutter ....................................................................29

Chapter 9: Control Codes ..........................................................................30

Chapter 10: ESC/POS Mode .......................................................................83

TM-T85 mode ...........................................................................83

TM-295 mode ...........................................................................85

TM-295 mode emulation cautionary items ...............................86

Appendix: Character Code Tables .............................................................88

Please access the following URL http://www.star-micronics.co.jp/service/sp_sup_e.htm for the lastest revision of the manual.

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Chapter 1: Outline

The SCP700 Series combines both a quick, quiet and highly reliable thermal receipt printer with an impact dot slip printer, enabling printing on single or multiple sheets of slip paper of an unspecified size.

The thermal printer enables receipt printing without a thermal ribbon and makes paper insertion extremely easy.

The biggest advantage of combining the two printer mechanisms into one unit is that less space, only one power supply and only one port are necessary, compared with using a slip printer which is separate from a thermal receipt printer, each requiring space and a power supply.

Thermal printing on receipt paper is quiet and fast.

Chapter 2: DIP Switch Settings

The printer’s DIP switches let you change communications parameters, thermal printing density, interface type, input buffer size, and emulation. This chapter explains the settings you can make and tells you how to actually change DIP switch settings.

Accessing the DIP switches

The DIP switches are located inside the printer, underneath the document table. Use the following procedure to remove the document table so you can operate the DIP switches.

Make sure that the printer is turned off and unplugged from its wall outlet.

❏

Open the printer cover.

❏

Use a Phillips head screwdriver to remove the two screws that secure the

❏

document table in place.

❏

Carefully work the document table loose and slide it to the left of the printer out of the way. It is not necessary to remove the document table complete, just move it enough so you can get at the DIP switches inside.

OFF

After the document table is opened sufﬁciently, use a thin ﬂat-blade

❏

screwdriver or some other similar object to change DIP switch settings.

❏

Carefully return the document table to its original position and secure it in place with the two screws.

Available DIP switch settings

There are two DIP switches inside the printer, named DIP Switch 1 and DIP Switch 2. DIP Switch 1 controls data communication parameters, while DIP Switch 2 controls other settings.

DIP Switch 1

The following table shows all the possible settings for DIP Switch 1. This switch sets the transmission parameters of the Standard Serial Interface. All switch settings, except for 1-7 and 1-8, are ON when the printer is shipped from the factory.

Switch Parameter ON OFF

1-1 1-2 1-3 Data Length 8 bits 7 bits 1-4 Parity Check Disabled Enabled 1-5 Parity Selection Odd Even

1-6 Handshake DTR/mode

1-7 Serial I/F Pin 6 Reset Signal Active Inactive 1-8 Serial I/F Pin8 Reset Signal Active Inactive

DIP Switch 2

The following table shows all the possible settings for DIP Switch 2. The factory default setting for this switch is all ON.

Baud Rate See table below

XON/XOFF

mode

Baud Rate Switch 1-1 Switch 1-2

2400BPS OFF OFF 4800BPS ON OFF 9600BPS ON ON

19200BPS OFF ON

Switch Parameter ON OFF

2-1 2-2 2-3 Input Buffer Size 4 KB 45 bytes

Thermal Print Density See table below

Switch Parameter ON OFF

2-4 Always ON 2-5 Interface Standard Option 2-6 Always ON 2-7 Not Used 2-8 Not Used

Thermal Print Density Switch 2-1 Switch 2-2

Light OFF OFF

Standard ON ON

Heavy ON OFF

Very Heavy OFF ON

Chapter 3: Memory Switch Settings

Each memory switch is a 16-bit word store in EEPROM. For details on the functions and settings of memory switches, refer to “Chapter 9”.

The table below shows the factory settings for the memory switches.

Memory Switch Hexadecimal Code

0 0000 1 0000 2 0000 3 0000 4 0000 5 0000

Chapter 4: Control Panel Operations

The control panel gives you some push-button control over the printer’s receipt and slip printer operations. It also includes indicator lights, which tell you the current status of the printer at a glance.

RECEIPT SLIP POWER

Indicator lights

The following table describes the meaning of indicator lights when it is on, off, or flashing.

Indicator Light On Off Flashing (slow) Flashing (fast)

POWER

SLIP

RECEIPT

* All indicators flash to indicate a non-recoverable error.

RECEIPT

Power on Power off

Slip paper

released

Receipt printer

ready

Slip paper

engaged

Receipt printer

not ready

SLIP/RESUME

adjustment mode Receipt: Stand-by

Slip: Dot

TM-T85 macro

Request

slip paper

Out of receipt

paper/Near end

Automatic

recovery Error

Slip printer error

Receipt printer

error

Buttons

The following table describes the function of the two control buttons of the control panel.

Button Description

RECEIPT

SLIP/RESUME

Producing a test print

The following procedure can be used at any time to test the receipt printer and the slip printer.

Turn on the printer and insert a piece of paper into the slip printer. Also

❏

make sure that roll paper is loaded for the receipt printer.

Note:

If you want to produce a test print on the receipt printer only, simply don’t insert paper into the slip printer.

❏

Turn off printer power.

❏

While holding down the

RECEIPT

receipt printer test print starts. After the receipt test print is complete, the slip printer will produce a test

print on the paper you inserted in the first step of this procedure. The slip printer test will continue until it reaches the end of the paper.

depressed for a few moments until the printer beeps and the

Press to feed the thermal paper. Holding do wn this b utton f eeds paper at high speed.

1. Press this button to release or engage slip paper from the slip printer. (Switching from releasing to engaging is only possible if slip paper is inserted.)

2. Press this button to clear the errors of the slip printer and receipt printer.

RECEIPT

button, turn printer back on. Keep

Note:

The slip printer momentarily releases the slip paper when you turn printer power back on. If you are using a lar g e piece of paper, it may fall out of the slip printer when this happens, causing the slip printer test to be skipped. Because of this, it is a good idea to keep hold of the paper in the slip printer when you turn power back on.

Adjusting the slip printer’s dot alignment

You may never have to use the procedure described in this section, but after you have been using your printer for some time you may find that the dots of some graphics do not align correctly. For example, what should look like:

may come out looking like one of the following:

or like this

This is caused when mechanical parts of the printer get out of alignment. This happens only rarely and you may never experience it at all throughout the life of the printer. If you do have problems, use the following procedure to correct it.

Execute the test print

❏

When the slip printer produce the test print, hold down the control panel’s

❏

RECEIPT

Adjust Mode. The

Entering the Dot Alignment Adjust Mode causes seven blocks of characters to be printed as shown below. An asterisk to the left of the blocks indicates which setting is currently selected. Use the has the best aligned characters. Press twice to specify the second block, and so on up to seven times to specify the seventh block. Pressing the the seventh block, no matter how many times it is pressed.

and

SLIP/RESUME

POWER

buttons, to enter the Dot Alignment

indicator ﬂashes slowly to indicate this mode.

RECEIPT

button more than seven times specifies

button to specify which block

once to specify the first block,

Note:

To exit this mode, press the mode setting is stored in the memory, a pattern using the selected setting, followed by “Adjust Completed” is printed, and the printer ejects the slip paper.

If you press the after entering the Dot Alignment Adjust Mode, the printer assumes that you do not want make any settings, so it prints the message “Adjust Complete!” and exits the mode. If a paper feed error occurs during this mode, the printer ejects the paper and this mode is cancelled.

SLIP/RESUME

button without pressing the

button. The dot alignment adjust

RECEIPT

button

Hexadecimal dump

This procedure prints in hexadecimal format all codes (character codes and control codes) that are sent to the printer by the computer. The printer does not execute any control codes (such as 0A - linefeed), it just prints them out. The hexadecimal dump is useful when you are writing programs for printer control.

Make sure that roll paper is loaded in the receipt printer.

❏

Turn off the printer.

❏

While holding down the control panel’s

❏

printer back on to enter this mode. The printer beeps once to indicate in this mode.

The printer will now print out the hexadecimal values of any data that is

❏

subsequently sent to it from your computer. The last line buffer should be ﬂushed by pressing the

❏

To exit this mode, turn the printer off.

Errors

RECEIPT

SLIP/RESUME

button.

button, turn the

There are three types of errors: automatically after some condition is attained, some action by you before they clear, and servicing by an authorized dealer. If a slip printer error occurs, the indicator flashes quickly. If a receipt printer error occurs, the indicator flashes quickly.

Automatic Recovery Error

Error Name Cause

Head Temperature Error Abnormal thermal head

temperature

automatic recovery

non-recoverable

POWER

Flashing Pattern

Fast Recovery occurs automatically after

errors that clear

recoverable

errors that require errors that require

SLIP

RECEIPT

Recovery

head temperature returns to normal.

Receipt Printer Recoverable Errors

Error Name Cause

Paper Out Error No roll paper Slow Insert paper and press SLIP/RESUME. Head Up Error Raised receipt printer

head

Near End Roll paper near end Slow Press SLIP/RESUME to resume

Cutter Error Error during roll paper

cutting

RECEIPT

Flashing Pattern

Fast Lower head and press SLIP/RESUME.

printing.

Fast If the blade is in the home position,

press SLIP/RESUME to continue printing. If the blade is not in the home position, this is a non-recoverable error.

Recovery

Slip Printer Recoverable Errors

Error Name Cause

Slip printer mechanism error

• Carriage motor lock

• Timing signal defect

• Abnormal home position check

SLIP

Flashing Pattern

Fast Correct the problem and press SLIP/

RESUME.

Recovery

Non-recoverable Errors

First try turning the printer off and then on again. If the error persists or if a nonrecoverable error is indicated by all indicators flashing, contact your nearest authorized dealer.

Chapter 5: Standard Serial Interface

❏

This chapter provides detailed speciﬁcations for the printer’ s standard serial interface (Connector Type: D-sub 9-pin). Set the transmission parameters with DIP Switch 1.

Transmission type............Asynchronous serial interface

Baud rate (bps).................2400, 4800, 9600, or 19200

(Selected by DIP switch)

Word format

Start bit:................1

Data bits: ..............7 or 8 (Selected by DIP switch)

Parity:...................Odd, Even, or None

(Selected by DIP switch)

Stop bit:................1

Signal polarities

RS-232C...............Mark = Logic “1” (–3V to –15V)

Space = Logic “0” (+3V to +15V)

Handshaking ....................DTR or XON/XOFF mode (Selected by DIP switch)

Mark [1]

b0 b1 b2 b3 b4 b5 b6 (b7)

Space [0]

ABCD

A: Start bit B: Data bits C: Vertical parity bit D: Stop bit

Input (RXD, DSR, INIT)

Printer Host computer

Output (DTR, TXD, RTS)

Printer Host computer

75188 or equivalent

Standard serial interface pins and signal names

Signal

No.

1 FG — Frame Ground 2 RXD IN Receive data 3 TXD OUT Transmission data 4 DTR OUT Data terminal ready signal. This signal changes to SPACE when the printer is ready to

5 SG — Signal ground 6 DSR IN Signal line that indicates if the host computer can receive data.

7 RTS OUT Same as DTR (Pin 4). 8 INIT IN This signal can be speciﬁed as an internal reset signal using Switch 8 of DIP Switch 1

Direction Function

Name

receive data.

SPACE: host can receive MARK: host cannot receive The status of this signal is not conﬁrmed. This signal can be speciﬁed as an internal reset signal using Switch 7 of DIP Switch 1 (page 4). MARK of 1ms or longer activates the reset.

(page 4). SPACE of 1ms or longer activates the reset.

9 N/C — Not connected

Interface connections

❏

Refer to the interface specifications for the host computer for details on connecting to its interface connector. The following illustration shows a typical connection configuration.

RS-232C

Printer side

(D-sub 9 pin)

IBM PC side

(D-sub 25 pin)

F-GND RXD TXD DTR S-GND

RTS INIT N/C

F-GND RXD TXD DTR S-GND

RTS INIT N/C

1 2 3 4 5 6DSR 7 8 9

Printer side

(D-sub 9 pin)

1 2 3 4 5 6DSR 7 8 9

1 2 3 4 5 6 7 8

IBM PC side

(D-sub 9 pin)

1 2 3 4 5 6 7 8 9

F-GND TXD RXD RTS CTS DSR S-GND DCD DTR

DCD RXD TXD DTR S-GND DSR RTS CTS RI

Data protocol

❏

DTR/DSR Mode

Set when dip switch #1-6 is ON. Communication is carried out while handshake is performed with the DTR and DSR signals. Control is executed by selecting the DTR signal for the busy signal when data is downloaded to the printer data. “SPACE” indicates the printer can receive data, and oppositely “MARK” indicates that data cannot be received.

In the ESC/POS mode, control is executed by selecting the DTR signal for the host computer’s busy signal when data is uploaded from the printer. “SPACE” indicates the host can receive data, and oppositely “MARK” indicates that data cannot be received.

RXD

DTR

Printing

Power ON

Data Data Data

Buffer full Buffer empty

If no error occurs for the printer after turning the power on, the DTR signal line is set to “SPACE.” After the host computer recognizes that the DTR signal line is “SPACE,” data text is sent to the RXD signal line. When the printer’s available buffer space drops below the specified number of bytes (256 bytes if using 4K-byte reception buffer, 16 bytes if using a 45-byte reception buffer; see 3-2 for details), the DTR signal line is set to “MARK.” After the host computer recognizes that the DTR signal line is “MARK,” data text transmission is interrupted, but the printer can receive data up until the data buffer becomes full. Available space in the data buffer increases as printing is executed, and when the printer’s available buffer space drops below the specified number of bytes (256 bytes if using 4K-byte reception buffer, 16 bytes if using a 45-byte reception buffer), the DTR signal line is set to “SPACE.”

In the ESC/POS mode, printer status transmission can be received by the host in the DTR/DSR communication mode (status is set after the DSR signal is confirmed as being “SPACE,” with the exception of some status transmission commands).

Buffer full cancellation in DTR mode (the following is an example in the Combination mode).

A) Buffer set to “big size” (4K-bytes) (set with dip switch 2-3)

Data buffer Full

Remainder 256 bytes

DTR “MARK” DTR “SPACE”

Near Full

Near Empty Empty

256 bytes

When available space drops below 256 bytes, DTR is set to “MARK.” When data in the buffer drops below 256 bytes, DTR is set to “SPACE.”

B) Buffer set to “small size” (45-bytes) (set with dip switch 2-3)

Data buffer Full

Remainder

16 bytes

DTR “MARK” DTR “SPACE”

Near Full

Near Empty Empty

16 bytes

When available space drops below 16 bytes, DTR is set to “MARK.” When data in the buffer drops below 16 bytes, DTR is set to “SPACE.”

❏

X-ON / X-OFF Mode

Set when dip switch #1-6 is OFF. Mode whereby the host is informed by TXD signal of X-ON (DC1) when data can be received or X-OFF (DC3) when data cannot be received. In the Star mode, X-ON / X-OFF output timing conditions are set by memory switch 4-C.

In the Combination mode, when memory switch 4-C is set to “0” (factory setting), exactly one byte is output for X-ON when the printer switches from offline (printer busy) to online (printer ready), and exactly one byte is output for X-OFF when the printer switches from online (printer ready) to offline (printer busy). The same goes for the ESC/POS mode (Dual mode), regardless of the setting of memory switch C-4. When memory switch C-4 is set to “1,” the XON signal is output is every three seconds.

X–ON X–OFF X–ON X–OFF X–ON

TXD

RXD

Printing

Paper out

signal

ON LINE

lamp

OFF

Power ON Load paper and press

Data Data Data

Paper out

the ON LINE switch.

If no error occurs for the printer after turning the power on, the X-ON signal (“DC1” by control code name, “11H” by hexadecimal data) is output by the TXD signal line. X-FF (DC3, 13H) is output when available buffer space drops below the specified number of bytes (256 bytes if using 4K-byte reception buffer, 16 bytes if using a 45-byte reception buffer). If memory switch 4C is set to “1,” an X-OFF signal is output each time one byte of data is received. The host computer receiving the X-0FF signals interrupts data text transmission, but the printer can receive data up until the data buffer becomes full. If the amount of data sent exceeds the amount of available buffer space, the excess data is discarded. Available space in the data buffer increases as printing is executed, and the X-ON signal is output when the printer's available buffer space drops below the specified number of bytes (256 bytes if using 4K-byte reception buffer, 16 bytes if using a 45-byte reception buffer).

Buffer full cancellation in X-ON / X-OFF mode (the following is an example in the Combination mode).

A) Buffer set to “big size” (4K-bytes) (set with sip switch 2-3)

Data buffer Full

Remainder

256 bytes

X-OFF X-ON

Near Full

Near Empty Empty

Printer setting conditions Description of operation

• When in Star mode and memory switch is set to “0”

• ESC/POS emulation

When available buffer space drops below 256 bytes, exactly one byte is output for X-OFF. When data in the buffer drops below 256 bytes, exactly one byte is output for X-ON.

• When in Star mode and memory switch is set to “1”

When available buffer space drops below 256 bytes, an X-OFF signal is output for each byte of data received. When data in the buffer drops below 256 bytes, and XON signal is output.

256 bytes

B) Buffer set to “big size” (45-bytes) (set with sip switch 2-3)

Data buffer Full

Remainder

16 bytes

X-OFF X-ON

Near Full

Near Empty Empty

16 bytes

Printer setting conditions Description of operation

• When in Star mode and memory switch is set to “0”

• ESC/POS emulation

• When in Star mode and memory switch is set to “1”

3-6) X-ON / X-OFF Signal Transmission Timing

An X-OFF signal is sent when the printer switches from online to offline. An X-ON signal is sent when the printer switches from offline to online. In the Star mode, an X-ON signal is sent every three seconds if memory switch 4-C is set to “1.”

4) Suggestions when memory switch 4-4 is ON [only when using interface specially designed for for ESC/POS (Dual mode)]

(1) Printing is interrupted in the event of an error, the cover is open, there is no paper,

or paper is advanced by the paper advance switch, but the printer does not switch to busy status.

(2) When handshake with the printer is executed by this setting, be sure to monitor

the status of the printer using the “GS a” command and its automatic data transmission function. With this setting, the “GS a” command becomes initial value setting n = 2, and status is automatically transmitted when online/offline status changes.

(3) If using DLE EOT or DLE ENQ, do not allow the reception buffer to become full.

• Suggestions when the printer is busy and the host cannot transmit data DLE EOT or DLE ENQ cannot be used if an error occurs when the printer becomes busy because the reception buffer is full.

• Suggestions when the printer is busy and the host can transmit data When the reception buffer becomes full during transmission of bit image data, if a DLE EOT or DLE ENQ command is used in the bit image data, DLE EOT or DLE ENQ is processed as bit image data. Data sent when the reception buffer is full may be discarded.

Usage Example: With a 4K-byte reception buffer, status is checked by “ESC v” or “ESC u” each time a printing line is sent. The amount of data per printing line is the amount whereby the reception buffer does not become full.

When available buffer space drops below 256 bytes, exactly one byte is output for X-OFF. When data in the buffer drops below 256 bytes, exactly one byte is output for X-ON.

When available buffer space drops below 256 bytes, an X-OFF signal is output for each byte of data received. When data in the buffer drops below 256 bytes, and XON signal is output.

Chapter 6: Optional Interface

Optional serial interface

Use a thin flat-blade screwdriver or some other similar object to change DIP switch settings on the optional serial interface board.

OFF

12345678

The following table shows all the possible settings for the DIP switches. All switch settings, except for 1-7 and 1-8, are ON when the printer is shipped from the factory.

Switch Parameter ON OFF

1 2 3 Data Length 8 bits 7 bits 4 Parity Check Disabled Enabled 5 Parity Selection Odd Even 6 Handshake DTR/DSR XON/XOFF 7 Serial I/F Pin 6 Reset Signal Active Inactive 8 Serial I/F Pin 25 Reset Signal Active Inactive

Baud Rate Switch 1 Switch 2

Baud Rate See table below

2400BPS OFF OFF 4800BPS ON OFF 9600BPS ON ON

19200BPS OFF ON

Optional serial interface pins and signal names

Signal

No.

1 FG — Frame Ground 2 TXD OUT Transmission data 3 RXD IN Receive data 4 RTS OUT Data terminal ready signal. This signal changes to SPACE when the printer is ready to

6 DSR IN Signal line that indicates if the host computer can receive data.

7 SG — Signal ground 20 DTR OUT Same as RTS (Pin 4). 25 INIT IN This signal can be speciﬁed as an internal reset signal using of DIP Switch 8 (page 21).

Direction Function

Name

receive data.

SPACE: host can receive MARK: host cannot receive The status of this signal is not conﬁrmed. This signal can be speciﬁed as an internal reset signal using of DIP Switch 7 (page 21). MARK of 1ms or longer activates the reset.

SPACE of 1ms or longer activates the reset.

Interface connections

❏

Refer to the interface speciﬁcations for the host computer for details on connecting to is its interface connector. The following illustration shows a typical connection conﬁguration.

(D-sub 25 pin)

F-GND TXD RXD RTS

DSR S-GND DTR INIT

(D-sub 25 pin)

F-GND TXD RXD RTS

DSR S-GND DTR INIT

Printer side

1 2 3 4

6 7

20 25

Printer side

1 2 3 4

6 7

20 25

IBM PC side

(D-sub 25 pin)

1 2 3 4 5 6 7 8

IBM PC side (D-sub 9 pin)

3 2 7 8 6 5 1 4

F-GND TXD RXD RTS CTS DSR S-GND DCD DTR

Data protocol

The speciﬁcations for the DTR and X-ON/X-OFF modes are the same as

❏

for the Standard Serial Interface.

Optional parallel interface

Interface: Conforms with Centronics parallel interface standard Data transfer speed: 1000 ~ 5000 CPS Synchronization: External strobe pulse Handshaking: Using ACK and BUSY Logic level: TTL-level compatible

A C K

DATA

STROBE

Approx. 9µs

BUSY

TTT

T: At least 0.5µs

Signal Name Sample Circuit

DATA 1

4.7kΩ

DATA 8

Input

STR

OBE

1kΩ

100Ω

1000pF

1.8kΩ

BUSY

Output

ACK

Optional parallel interface pins and signal names

(18) (1)

74LS-equivalent

(36) (19)

No.

Signal Name Direction Function

1 STR

2 - 9 DATA 1 - 8 IN

10 A 11 BUSY OUT Printer is ready to receive data when LOW. HIGH indicates one of the following

12 PAPER OUT OUT Normally LOW, this signal goes HIGH when the printer is out of paper. 13 SELECTED OUT HIGH when the printer is on line 14 — IN This signal is not checked by printer. 15 N/C — Not connected 16 SIGNAL GND — Signal ground 17 CHASSIS GND — Chassis ground (isolated from logic ground) 18 +5VDC — +5V DC (max. 50mA)

19 - 30 GND — Twisted pair return signal ground level

31 RESET

OBE IN

CK OUT 9

Signals when data is ready to be read. Signal goes from HIGH to LOW (for at least 0.5

s) when data is available.

Information on the ﬁrst eight bits of parallel data. Each signal is HIGH for logical 1 and LOW for logical 0.

s LOW pulse to acknowledge receipt of data

conditions.

• Data being entered

• Printer off line

• Error condition

IN LOW when printer is reset to power-on defaults

33 EXT GND — External ground

34 - 35 N/C — Not connected

36 — IN This signal is not checked by printer.

ERROR

OUT Normally HIGH, this signal goes LOW to signal that printing is disabled due to an

error condition.

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