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EPSON Serial Interface Card C82305* C8230* English Deutsch Français ESpañol Italiano 4000152 C01-00.
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.
Serial Interface C82305 * /C82306 * Schnittstellenkarte C82305 * /C82306 * Interface série C82305 * /C82306* English Deutsch Français Español Italiano Interface en serie C82305 * /C82306* Interfacc.
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 prot.
INTRODUCTION The Serial Interface Card 032305 * /C82306 * is an interface that allows asynchronous serial data communication between a host computer and an EPSON printer.
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.
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.
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.
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.
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 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.
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 • 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.
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 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.
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.
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.
• 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).
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.
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.
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.
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.
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.
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.
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.
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.
Current-Loop Transmitter/Receiver Circuit Diagrams Set the Jumper Jl, J2, J3, and J4 referring to the following diagrams. Transmitter Circuit Diagram 121.
Receiver Circuit Diagram 122.
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.
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