A700 User Manual 1 1 PRODUCT DESCRIPTION 2 INSTALLATION
Contents
1. of its products Shielding reduces EMI radiation and improves noise immunity This will help to minimise interference to other equipment and will improve the communications reliability The recommended cable construction is as follows 1 Take the shield surrounding cable wires and solder it to the Frame Ground FG pin If FG is not available then connect the shield to Signal Ground but in this case always use a separate wire to connect Signal Ground at both ends 2 The shield must only be connected at one end of the cable and must run the full length of the cable 3 We recommend connecting shield at the cable end which is not attached to the A700 A700 User Manual FG RD TD CTS RTS DTR SigGND DCD DSR RD TD CTS RTS DTR SigGND DCD Computer Cable End DTE des DB 25 Female Computer Cable End DTE dl 6 CABLE EXAMPLES Diagram 1 Serial Cable for IBM PC XT and PS 2 A700 MultiPort m Shield j Cable End TD 26 o RD 36e o RTS 46 o5 DTE cts 5e o DSR 66 920 Oars Jo SigGND 7 _ 7 DCD 8 _ 8 DB 25 Male DTR 20 _ _ _ 6 Diagram 2 Serial Cable for IBM AT A700 MultiPort Shield Cable End TD 2 e 8 2 RD 3 3 e 3 DTE RTS 4 ese CTS 5 3 9 7 DSR 6 e i i e 4 SUN S SigGND 7 o 5 DB 25 Male DIR 2 a 5 Diagram 3 A700 M2. A700 User Manual PRODUCT DESCRIPTION The ASeries A700 MultiPort allows two computers to share the same printer It provides one Serial input port and one Parallel input port The A700 is connected to the parallel port of the printer and takes its power from this port Switching between the two input ports is fully automatic but no buffering will occur m RC Figure 1 EJ4DIP Switch d ecce A700 MultiPort Power Yellow Serial Port lt Receive Data Green lt Transmit Data Green Error Red A Parallel Port Parallel Connection to Printer gt INSTALLATION Lexmark 23xx Series Printers Before installing the A700 MultiPort please make sure that the DIP Switches are set correctly to meet your requirements Please refer to Section 4 for complete details of the DIP Switch Settings Once the DIP Switches are set the A700 may be simply hooked into place on the rear of the Lexmark 23xx printer and the parallel output connector plugged directly into the printer Turn the printer ON and observe the LEDs on the A700 MultiPort The Power LED should light up and remain alight The Data LEDs should light up and then extinguish within 2 seconds After this sequence the unit is ready for operation Power the printer OFF and connect the correct cables between the A700 MultiPort and the host devices Use only cables which you know to have the correct pin configurations to match the A700 to your equipment C
3. able requirements are discussed in Sections 5 and 6 WARNING All devices must be powered OFF before connecting cables to them 1 A700 User Manual 3 SELF TEST FUNCTION The A700 MultiPort has an built in Self Test Mode In this mode the A700 will output a continuous stream of printable ASCII characters to the Lexmark printer This function may be used to self test the A700 MultiPort and is activated in the following manner Step 1 Take note of the original DIP Switch settings on the A700 MultiPort and then turn the Lexmark printer OFF Step 2 Select Self Test mode by setting the DIP Switch as follows DIP Switch Number Setting Step 3 Turn the Lexmark printer ON The output produced by the Self Test function is as follows 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopaqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopaqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopaqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopaqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopaqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklm
4. d Not used Pulled High Output Not Used Pulled High M GO GO JO Q E GM gt NO N Signal Description FG Frame Ground TD Transmit Data RD Receive Data RTS Request To Send CTS Clear To Send DSR Data Set Ready SG Signal Ground DCD Data Carrier Detect DTR Data Terminal Ready HI Ring Indicator A700 User Manual 8 SPECIFICATIONS CPU Parallel Ports Serial Port Flow Control Buffer LED Indicators Power Supply Dimensions Weight Operating Temperature Stroage Temperature 80C31 Microprocessor Centronics Parallel Input 36 pin Centronics female connector Output 36 pin Centronics male connector Asynchronous RS 232D Full duplex communication DB 25 female connector DIP Switch Selection Baud Rate 300 600 1200 2400 4800 bps 9600 19200 and 38400 Data Bits 7or8 Parity None Odd or Even Stop Bits 1or2 Handshaking Software Robust Xon Xoff Hardware DTR DSR 60 byte receive buffer Power On Yellow Receive Data Green Transmit Data Green Data Error Red 5Vdc from printer parallel connector Pin 18 154mm x 95mm x 13mm 225 grams 0 to 40 C 20 to 70 C All specifications subject to change without notice
5. nopaqrstuvwxyz 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopaqrstuvwxyz This output will continue as long as the printer is powered ON To stop the output simply turn the printer OFF Once the Self Test is complete the A700 DIP Switches should be returned to their original settings for normal use A700 User Manual HARDWARE CONFIGURATION Setting the DIP Switch Before attempting to change the DIP Switch settings disconnect the A700 from its power source The DIP switches are only read when the A700 is powered on They are located above the LEDs as shown in Section 1 Figure 1 Default Factory Settings The A700 is factory pre set to the following configuration Timeout of 10 seconds ON 9600 bits per second 8 Data Bits No Parity DTR DSR Handshaking p 2 3 4 5 6 7 8 1 Stop Bit TIMEOUT Settings The Timeout is used to tell the A700 how long to wait for data from one port before switching to the other port A Timeout of 10 seconds is recommended for most applications and 20 seconds is recommended for CAD Windows and programs which tend to periodically pause during printing A700 User Manual DIP Switch Settings Robust Table 4 1 Bits Per Second refer to Table 4 2 Data Bits Parity amp Test Mode refer to Table 4 3 Table 4 2 Table 4 3 A700 User Manual CABLE REQUIREMENTS Use Shielded Cable Alfatron Pty Ltd recommends the use of shielded cable with all
6. ultiPort Cable End TD RD RTS DTE CTS DSR SN SigGND DCD DB 25 Male DTR DSR Serial Cable for Other Devices Shield S o FG 2 6 9 RD 3 6 0 TD 4 4 31 9 CTS seii o RTS 6 1 e DTR Tei i e 8 6 1 9 C 20 6 e DSR DB 9 Female User Device Cable End 7 a ES GO o l 09 Qn 5 GM PORT PINOUTS A700 User Manual Centronics Parallel Port Signal Data Strobe Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 Data Bit 8 Acknowledge Busy Paper End Select Autofeed Not Connected Ground Ground Not Connected Description Active Low Active High Active High Active High Active High Active High Active High Active High Active High Active Low Active High Pulled Low Pulled High Pulled High Pin Signal Description 19 Ground 20 Ground 21 Ground 22 Ground 23 Ground 24 Ground 25 Ground 26 Ground 27 Ground 28 Ground 29 Ground 30 Ground 31 Initialize 32 Error 33 Ground 34 Not Connected 35 Not Connected 36 Select In Not Connected Pulled High Pulled Low RS 232C Serial Port The RS 232 Serial Port of the A700 MultiPort is configuired as DTE Pin Status Used Output Input Not used Pulled High Not used Pulled High Input Use
Download Pdf Manuals
Related Search