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Epson C8230 - page 1
EPSON Serial Interface Card C82305* C8230* English Deutsch Français ESpañol Italiano 4000152 C01-00 ...
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Epson C8230 - page 2
NOTICE All rights reserved. Reproduction of any part of this manual in any form whatsoever without Seiko Epson’s express written permission is forbidden. The contents of this manual are subject to change without notice. All efforts have been made to ensure the accuracy of this manual. However, should any error S be detected. Seiko Epson would gre ...
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Epson C8230 - page 3
Serial Interface C82305 * /C82306 * Schnittstellenkarte C82305 * /C82306 * Interface série C82305 * /C82306* English Deutsch Français Español Italiano Interface en serie C82305 * /C82306* Interfaccia seriale C82305* /C82306* ...
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Epson C8230 - page 4
TABLE OF CONTENTS INTRODUCTION About this guide SETTING THE CONDITIONS Card layout DIP switch and jumper settings DIP switches Jumpers DATA ENTRY Serial communication About data entry Handshaking protocol SPECIFICATIONS HARDWARE DESCRIPTION RECOMMENDED CIRCUIT CONNECTIONS INSTALLATION 2 3 4 4 5 5 10 13 13 13 14 17 19 21 22 ...
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Epson C8230 - page 5
INTRODUCTION The Serial Interface Card 032305 * /C82306 * is an interface that allows asynchronous serial data communication between a host computer and an EPSON printer. This interface card offers the following features: • Data transmission that can be set at either RS-232D or 20 mA Current Loop levels (RS-232D has been revised from the former R ...
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Epson C8230 - page 6
About this guide This guide is designed to give you detailed information on how to install your C82305 * /C82306 * serial interface card in a variety of EPSON printers. Installation procedures vary slightly depending upon the printer model that you have. Also included are instructions on how to adjust the settings of the C82305 * /C82306 * interfac ...
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Epson C8230 - page 7
SETTING THE CONDITIONS The C82305 * /C82306 * interface card has two sets of DIP (Dual In-line Package) switches, and seven jumpers. These switches and jumpers are used for selecting various interface operations. Card layout The figure below shows the layout of the C82305 * /C82306 * card, and the locations of the DIP switches and jumpers. Figure 1 ...
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Epson C8230 - page 8
DIP switch and jumper settings Before you install the C82305 * /C82306 * interface, you may need to adjust the DIP switch 2 and jumper settings. You can change the DIP switch 1 settings after you install the interface. When making DIP switch setting changes, it is best to use a pointed device, such as a ball-point pen or small screwdriver. Caution ...
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Epson C8230 - page 9
DIP switch 1 (interface operations) The table below contains information on switch functions, and the factory setting of each. Table 1. DIP switch 1 Switch Function ON OFF Factory number setting 1-1 I/F card enable/disable Disable ON (Note) Enable l-2 Word length l-3 Parity check 1 1-4 Parit y chec k 2 I 8 bit 7 bit ON OFF Se e Tabl e 4. OFF l-5 l- ...
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Epson C8230 - page 10
DIP switch 2 (interface operations) The table below contains information on switch functions, and the factory setting of each. Table 2. Data word structure The data word structure is also operator selectable through DIP switch settings (See Table 1). The word structure for serial data is: 1 start bit +7 or 8 data bits (selectable) + 1 parity bit (s ...
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Epson C8230 - page 11
The table below shows the possible word structure combinations. Table 3. Word structure You can select the parity check method by DIP switch settings. (See Table 4.) Table 4. Parity check Note Since the selection of parity check depends on your type of printer, refer to your printer’s manual for details. ...
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Epson C8230 - page 12
Baud rate selection In serial data communication, data is transmitted in the form of bits. These data bits go out one at a time along a single path, and in a specified order. The BPS (Bits Per Second) rate, or speed at which these bits are transmitted, can be selected using a combination of DIP switch settings. Note In the current loop mode, accura ...
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Epson C8230 - page 13
Note • The printer will assume a setting of 1,200 BPS for switch combinations other than those shown above. • Since the maximum transmission speed (baud rate) depends on your type of printer, refer to your printer’s manual for details. Jumpers The jumper is a small terminal used for connecting or disconnecting a circuit. The jumper is on when ...
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Epson C8230 - page 14
Jumper settings Table 6. shows information about the interface conditions that can be selected using jumpers. In all cases, ON denotes the connection of the jumper (covering both terminals), while OFF denotes the disconnection of the jumper. Table 6. Jumper settings Note If the host computer is not equipped with a power supply for the Current Loop ...
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Epson C8230 - page 15
Table 7. Flag polarity selection Jumper Function Factory setting ON: MARK (do not accept data) = JNOR Current ON ON J5 JREV ON: MARK (do not accept data)= Negative EIA level ON: MARK (do not accept data) = Current OFF ON: MARK (do not accept data)= Positive EIA level OFF Note Either the JNOR or JREV jumper must be connected. 12 ...
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Epson C8230 - page 16
DATA ENTRY This section gives a brief description of serial data communication conditions and handshaking protocols supported by the C82305 * /C82306 * interface card. Serial data communications The CL32305 * /C82306 * interface allows you to select either RS-232D or 20 mA Current Loop signal levels; but never both at the same time. This interface ...
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Epson C8230 - page 17
Handshaking protocol DTR and X-on/X-off handshaking protocols can be performed under either RS-232D or 20mA Current Loop transmission. X-on/X-off Protocol X-on/X-off protocol is a system in which the printer transmits a code to the computer to indicate that it cannot accept more data, and a second code when it is once again ready. The C82305* /C823 ...
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Epson C8230 - page 18
• Transmit timing of X-on signal The X-on signal is transmitted when the power is first turned on, or when the vacant area in the buffer is greater than the specified value (typically 512 bytes; refer to your printer manual). Figure 3. X-on/X-off thing X-ON X-OFF X-ON POWER ON Buffer capacity less than specified value Buffer capacity greater than ...
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Epson C8230 - page 19
With the status flag set, and data reception prohibited, the vacant area of the buffer gradually increases as the printer continues to print. When the vacant area in the buffer reaches the specified value (typically 512 bytes; refer to your printer manual), the flag is reset and data entry is again enabled. Note Reverse Channel pin (No. 11) and DTR ...
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Epson C8230 - page 20
SPECIFICATIONS 1. Synchronization: Asynchronous 2. Baud Rate: 75, 110, 134.5, 150, 200, 300, 600, 1,200, 1,800, 2,400, 4,800, 9,600, or 19,200 BPS (selectable) 3. Word length: Start bit: 1 bit Data bit: 7 or 8 bits (selectable) Parity bit: Odd, even, none, or ignore (selectable) Stop bit: 1 bit or more 4. Input signal polarity: 1) With RS-232D: MAR ...
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Epson C8230 - page 21
5. Handshaking Table 8. Handshaking Using DTR protocol Using X-ON/X-OFF protocol US-232D The two signal The impedance conditions at pm No. between pin No. 17 11 and pin No. 20 are and pin No. 24 is as as follows; follows; MARK-data entry is LOW(MARK)-data disabled entry is disabled SPACE-data entry is High(SPACE)-data enabled entry is enabled Data ...
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Epson C8230 - page 22
HARDWARE DESCRIPTION 1. I/F board connector: EIA standard 25-pin D-SUB female connector. 2. For signal description and pin assignment, refer to the table below: Table 9. Signal Description and Pin Assignment Pin No. Signal name Direction Description 1 protective Ground — Chasis ground Transmitted 2 Data (TXD) Text Transmitted serial data 3 Receiv ...
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Epson C8230 - page 23
Pin No. Signal Name Direction* 17 TTY-TXD out 24 TTFTXD Return Description High impedance (‘SPACE’) between pin No. 17 and No 24 or an X-on signal sent across pin No. 17 and No. 24 indicates that the printer is ready to accept data. Low impedance (‘MARK’) or an X-off signal being sent indicates that the printer is busy. Operator can invert ...
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Epson C8230 - page 24
RECOMMENDED CIRCUIT CONNECTIONS Recommended line driver and line receiver for RS-232D signal level settings. (As viewed from the host computer.) Figure 4. RS-232D Line Receiver Serial Interface Card Recommended line interface circuit for 20mA Current Loop signal level settings. (As viewed from the host computer.) Figure 5. Current Loop Note The val ...
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Epson C8230 - page 25
INSTALLATION The C82305* /C82306* interface card is designed to be installed inside the printer. Installation or removal of the interface board is easy, and requires only a screwdriver. The following section gives you detailed information on how to install your interface card in a variety of EPSON printers. Caution • Turn off the power to the pri ...
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Epson C8230 - page 26
inside the compartment. 2. Fit both sides of this interface card into the guides 3. Insert this interface card until the interface pins mate with the connector inside your printer. 4. Secure the interface with the two screws. 23 ...
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Epson C8230 - page 27
Current-Loop Transmitter/Receiver Circuit Diagrams Set the Jumper Jl, J2, J3, and J4 referring to the following diagrams. Transmitter Circuit Diagram 121 ...
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Epson C8230 - page 28
Receiver Circuit Diagram 122 ...
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Epson C8230 - page 29
EPSON OVERSEAS MARKETING LOCATIONS EPSON AMERICA. INC. 2780 Lomita Blvd. Torrance. Cailif. 90505. U S A Phone (213) 539-9140 Fax (213) 534-5854 EPSON UK LTD. campus 100. Maylands Avenue. Hemel, Hempstead. Herts. HP2 7EZ, UK Phone: 442-61144 Telex: 5182467 EPSON AUSTRALIA PTY. LTD. Unit 3, 17 Rodborough Road. Frenchs Forest NSW 2086 Australia Phone: ...
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