ATEN SXP-500 User manual

User Manual
SXP-500
Read this guide thoroughly and follow the installation and operation
procedures carefully in order to prevent any damage to the units
and/or any devices that connect to them.
This package contains:
M1 Bidirectional Serial/Parallel Converter (SXP-500)
M1 User Manual
If anything is damaged or missing, contact your dealer.
© Copyright 2000 ATENInternational Co., Ltd.
Manual Part No. PAPE-1154-100
Printed in Taiwan 10/1999
All brand names and trademarks are the registered property of their respective owners.
2001 - 01 -10

Overview
TheSXP-500isaninterfaceconverterthat allowsCentronicsand RS-232
devices to communicate with each other (a computer with an RS-232
output to a Centronics printer, for example)
TheSXP-500providesaDB-9RS-232C(DCE)compatibleconnector,and
a C-36 Centronics connector. The serial baud rate is from 1200 to 115200
bps., selectable by a combination of DIP Switch and Jumper settings. The
parallel interface speed is 92.16 KB/sec.
Theunit supportsbothhardwareandsoftware (XON/XOFF)handshaking.
Setup is extremely easy. All that is involved is setting the DIP Switch,
Jumper (JP1), and connecting the cables.
Features
MBoth Hardware and XON/XOFF Handshaking
MNon-powered
MEasy Installation
MCompact Size
Front View
- 1 -
Serial Port Connector
Power LED
Parallel Port Connector
1.8m
2001 - 01 -10

Rear View
DIP Switch Confi uration
Overview:
The SXP-500 is configured by setting an eight segment DIP Switch as
follows:
Switch Purpose
1
2
3Baud rate Setting
4 Handshake Setting
5 Data and Stop Bits Setting
6
7Parity Setting
8 Conversion Direction setting
An explanation of each DIP Switch setting is given in the next section.
Note: 1. When the segment is set in the direction of the arrow, it is ON.
2. In each table, the default setting is highlighted.
- 2 -
DIP Switch
2001 - 01 -10

DIP Switch Settin s
Baud Rate:
Thebaudrateissetwith DIPSwitchsegments1- 3 (locatedon the bottom
panel),and JP1 (locatedinsidethehousing),as shown inthetable,below:
DIP Switch Segment Baud Rate (bps)
1 2 3 JP1 Short JP1 Open
ON ON ON 1200 38400
ON ON OFF 2400 57600
ON OFF ON 9600 76800
ON OFF OFF 14400 115200
OFF ON ON 19200 153600
OFF ON OFF 38400 230400
OFF OFF ON 57600 460800
OFF OFF OFF 115200 921600
- 3 -
Handshake:
Segment Handshake
4
ON XON / XOFF
OFF Hardware
Data and Stop Bits:
Segment Data Bits Stop Bits
5
ON 7 2
OFF 8 1
Parity:
Segment Parity
67
ON Either Parity Inhibit
OFF ON Even Parity
OFF OFF Odd Parity
Conversion Direction:
Segment Direction
8
ON Parallel to Serial
OFF Serial to Parallel
2001 - 01 -10

Cablin
Serial to Parallel:
When performing a Serial to Parallel interface conversion:
1. Plug the attached serial cable (with DB 9 female connector) leading
out of the SXP-500 into the PC’s serial port
2. Plug the female end of a C-36 male/female printer cable into the
SXP-500’s printer connector
3. Plug the male end of the C-36 male/female printer cable into the
printer.
Note: If the distance to the printer is close enough, you can plug the
SXP-500 directly into the printer, without the need for a printer
cable.
- 4 -
2001 - 01 -10

Parallel to Serial:
When performing a Parallel to Serial interface conversion:
1. Use an IEEE1284 Parallel cable with a male D25 connector at one
end, and a female C-36 connector at the other:
a) Plug the D25 end of the cable into the PC’s parallel port
b) Plug the C-36 end of the cable into the SXP-500’s Centronics
connector
2. Use a serial cable with a male D9 connector at one end, and a male
D25 connector at the other:
a) Plug the D9 end of the cable into the SXP-500’s attached serial
cable.
b) Plug the D25 end of the serial cable into the printer’s serial port.
- 5 -
2001 - 01 -10

Serial Port Cablin :
Parallel Port Cablin :
- 6 -
SXP-500
DCE
DB-9
3
2
8
6
4
5
Device Connector’s Pin #
DCE DTE DCE DTE
DB-9 DB-9 DB-25 DB-25
2 3 3 2
3 2 2 3
8 5 4
8 4 5
4 6 20 6
6 4 6 20
5 5
Cables
a 25-pin/25-pin cable
or a 9-pin/25-pin cable
Tx Rx
Rx Tx
RTS CTS
CTS RTS
DSR DTR
DTR DSR
GND GND
Device’s Pin #
DB-25 C-36
1 1
2-9 2-9
10 10
11 11
12 12
13 13
14 14
15 32
16 31
1 36
18-25 19-30
SXP-500
C-36
1
2-9
10
11
12
13
14
32
31
36
19-30
a 25-pin/36-pinCables
or a 36-pin/36-pin cable
STROBE
D0-D
ACK
BUSY
PE
SLCT
AUTOFEED-XT
ERROR
INIT
SLCT-IN
GND
2001 - 01 -10

Operation
When operating the SXP-500, please take note of the following:
1. Since the SXP-500 is a DCE device, the serial device it connects to
must be configured as a DTE device.
2. In DCE mode, the unit uses RTS/DTR (pins 6 and 8) handshaking.
When RTS/DTR is set High, the computer is allowed to transmit
data. When the unit is busy, it sets the RTS/DTR line to Low, and
the computer stops transmitting data. Consequently, if the computer
can not identify the RTS/DTR signal, it may result in data loss.
3. The unit’s baud rate, data length, stop bits and parity settings must
be configured to match those of the computer.
4. You must reset the parallel printer before printing.
5. Make sure you have set the desired Conversion Direction (with DIP
switch 8).
Appendix
Specifications
Function Specification
Power Consumption AC 9V 50m A (max.)
Data Transmission Distance Up to 5 m (30’)
Connectors RS-232C DB-9 female DCE
Centronics C-36 male
Interface Exchange In Serial or Parallel
Out Parallel or Serial
Serial Communications Mode DCE Only
LEDs Green & Red
Microcontroller ASIC
Temperature Operating 500- 400C
Storage -200-600C
Humidity 0 -80%
Housing Plastic
Weight 120 g
Dimensions (L x W x H) 101 x 62 x 25.5 mm
- 7 -
2001 - 01 -10

RS-232C Interface Specification
The RS-232C Interface DCE mode (default) specification is given in the
table below:
Pin Name Function
1 CD PULL Up (+9v)
2 TxD Transmit Data
3 RxD Receive Data
4 DSR Data Set Ready
5 GND Ground
6 DTR Data Terminal Ready
7 CTS Clear to Send
8 RTS Request to Send
9 RI Ring indicator
Centronics Interface Timin Chart
- 8 -
DATA
STB
BUSY
ACK
1
0
0.25
0.5 US
(min)
1 US
(min)
1 US
(min)
0.5 US
(min)
0.5 US
(min)
0.5 US
0.25 US(min)
1 US
(min)
0.5 US
(min)
1
0
1
0
1
0
1 US
(min)
2001 - 01 -10

Centronics Interface Specification
Pin Name Function
1STB DATA STROBE
2DATA BIT 1 DATA BUS
3DATA BIT 2
4DATA BIT 3
5DATA BIT 4
6DATA BIT 5
7DATA BIT 6
8DATA BIT 7
9DATA BIT 8
10 ACK DATA RECEIVED ACKNOWLEDGE
11 BUSY DEVICE BUSY OR NOT
12 PAPER EMPTY PULL UP
13 SLCT PULL UP
14 A-F PULL UP
15 N.C.
16-17 GROUND GROUND
18 N.C.
19-30 GROUND GROUND
31 INIT PULL UP
32 ERR PULL UP
33 GROUND GROUND
34-35 N.C.
36 SL-1 PULL DOWN
- 9 -
2001 - 01 -10