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Parallel to Serial and
Serial to Parallel Converter
Model 232SPS2
Document No. 232SPS24595
B&B Electronics Mfg. Co. Inc.
P.O. Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 434-7094
Internet:
http://www.bb-elec.com
sales@bb-elec.com
techsupt@bb.elec.com
© B&B Electronics -- June 1995
232SPS24595 Manual Cover Page
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 434-7094
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Table of Contents CHAPTER 1: INTRODUCTION....................................................... 1 PACKING LIST................................................................................ 1 SPECIFICATIONS............................................................................ 2 CHAPTER 2: PARALLEL TO SERIAL INSTALLATION.............. 3 CONNECTING THE 232SPS2 TO YOUR PARALLEL PORT ...... 3 CONNECTING THE 232SPS2 TO YOUR SERIAL PRINTER ...... 3 CHAPTER 3: SERIAL TO PARALLEL INSTALLATION
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CHAPTER 1: INTRODUCTION The 232SPS2 is a bi-directional parallel to serial converter. The 232SPS2 allows you to convert data from your parallel port to a serial communication format or to convert data from your serial port to a parallel communication format. Standard baud rates from 1200 to 115.2k with a variety of data formats can be used to match the user's serial port requirements. Both kinds of flow control, XON/XOFF and hardware handshaking, are supported by this unit. The unit may be po
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SPECIFICATIONS Size: 3.8"L x 2.4"W x 0.9"H Buffer Size: 96 bytes Data Formats: Baud Rates: 1200 to 115.2k baud Data Bits: 7 or 8 Parity: Even, Odd, and None Stop Bits: 1 NOTE: 7 data bits, no parity is not supported. Handshaking: XON/XOFF, DTR Power Requirement: 7-18 Volts DC @ 2 ma. (This value does not include the power that is provided by the serial port and the power that is consumed by external devices.) 2 232SPS24595 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 6135
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CHAPTER 2: PARALLEL TO SERIAL INSTALLATION When converting data from your parallel port to a serial communication format, position #8 of the dipswitch must be "ON". The other seven positions should be set to match the data format of your serial printer. Refer to Table 5.1 for dipswitch setting specifications. Data Flow 232PS 232SPS2 Serial Printer Parallel Port CONNECTING THE 232SPS2 TO YOUR PARALLEL PORT The 232SPS2 uses most of the available pins on the parallel port. To insure proper oper
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CHAPTER 3: SERIAL TO PARALLEL INSTALLATION When converting data from your serial port to a parallel communication format, position #8 of the dipswitch must be "OFF". The other seven positions should be set to match the data format of your computer's serial port. Refer to Table 5.1 for dipswitch setting specifications. CONNECTING THE 232SPS2 TO YOUR PARALLEL PRINTER The 232SPS2 has a DB-25 female connector on its parallel port. Most parallel printers use a Centronics 36-pin connector. To insure
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CHAPTER 4: POWER CONNECTIONS The unit may be port-powered using DTR and RTS on the serial port. If the 232SPS2 cannot be powered using the handshake lines, it may be powered externally using +7 to +18 volts DC at 2 milliamps. If you are using an external supply, simply plug a 2.5 mm plug from an appropriate DC source into the power jack on the side of the 232SPS2 module. Power supplies are available through B&B. (Model 232PS is recommended.) 232SPS24595 Manual 5 B&B Electronics -- PO Box 1040
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CHAPTER 5: SELECTING DIPSWITCH SETTINGS The 232SPS2 is set up using an eight-position dipswitch. In order for the 232SPS2 to function properly, it must be set up to match your system's requirements. The following parameters on the 232SPS2 are set on the dipswitch: converter direction, baud rate, flow control, number of data bits, and the type of parity. Each of the parameters are briefly described below. For specific parameter settings, refer to Table 5.1. Converter direction - Can operate as
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Table 5.1 Setting DIP SWITCH POSITION 1 2 3 4 5 6 7 8 1200 Baud OFF OFF OFF X X X X X 2400 Baud ON OFF OFF X X X X X 4800 Baud OFF ON OFF X X X X X 9600 Baud ON ON OFF X X X X X 19.2K Baud OFF OFF ON X X X X X 38.4 Baud ON OFF ON X X X X X 57.6K Baud OFF ON ON X X X X X 115.2K Baud ON ON ON X X X X X XON/XOFF X X X OFF X X X X DTR control X X X ON X X X X 8 Data bits X X X X OFF X X X 7 Data bits X X X X ON X X X No parity X X X X X OFF X X Parity enable X X X X X ON X X Even parity X X X X X X
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APPENDIX A: PARALLEL PORT CONNECTIONS The parallel port connections for the parallel to serial and serial to parallel mode are shown in Table A-1, and Table A-2, respectively. The connections required are the same for both modes of handshaking. The error lines on the parallel port are forced to the "no error" states. If the printer is off-line, out of paper, etc., the 232SPS2 will force the busy line (Pin #11) on the parallel port high (logic "1") when in parallel to serial mode. If a error occ
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Table A-2 Serial to Parallel Mode DB-25 Signal Name 232SPS2 Pin # Direction 1 Strobe Output 2 Data bit #0 Output 3 Data bit #1 Output 4 Data bit #2 Output 5 Data bit #3 Output 6 Data bit #4 Output 7 Data bit #5 Output 8 Data bit #6 Output 9 Data bit #7 Output 10 Acknowledge Input 11 Busy Input 12 PE Input (NU) 13 SLCT Input (NU) 14 Auto Feed “1” Output 15 Error Input (NU) 16 INIT “1” Output 17 SLCT IN “1” Output 18-25 GND Appendix A A-2 232SPS24595 Manual B&B Electronics -- PO Box 1040 -- Ot
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APPENDIX B: SERIAL PORT CONNECTIONS The next four sections will cover the required serial port connections on the 232SPS2. Each section will list the required connections and the optional connections that some systems may require. Connections to the serial port of the 232SPS2 are made on a female DB-25 connector. SERIAL TO PARALLEL MODE, HARDWARE HANDSHAKING The serial port of the 232SPS2 module is wired as a DCE device. For proper operation the following connections must be present: 1. Tra
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SERIAL TO PARALLEL MODE, SOFTWARE HANDSHAKING For proper operation the following connections must be present: 1. Transmit Data (TD) from the host (DTE) must be connected to Pin #2 on the 232SPS2 module. 2. Receive Data (RD) from the host (DTE) must be connected to Pin #3 on the 232SPS2 module. 3. Signal Ground (SG) from the host must be connected to Pin #7 on the 232SPS2 module. If port powering the 232SPS2, these connections are recommended: 4. Request to Send (RTS) from the host must be connec
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TABLE B-1 DB-25 Serial Port Connections (S to P) Serial Port 232SPS2 (DTE) Signal Name Direction (DCE) DB-25S Pin # DB-25P Pin# 2 Transmit Data -----------> 2 3 Receive Data <----------- 3 4 Request to Send 4 5 Clear to Send <----------- 5** 6 Data Set Ready <----------- 6** 7 Signal Ground 7 8 Carrier Detect <----------- 8** 20 Data Terminal Ready -----------> 20 22 Ring Indicator NC * When using XON/XOFF control, this connection may not be required. TABLE B-2 DB-9 Serial Port Connections (S t
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PARALLEL TO SERIAL MODE, HARDWARE HANDSHAKING The serial port of the 232SPS2 module is wired as a DCE device. For proper operation the following connections must be present: 1. Transmit Data (TD) from the printer (DTE) must be connected to Pin #2 on the 232SPS2 module. 2. Data Set Ready (DSR) from the printer must be connected to Pin #6 on the 232SPS2 module. 3. Signal Ground (SG) from the printer must be connected to Pin #7 on the 232SPS2 module. If port powering the 232SPS2, these connections
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Some printers may require one or more of the following connections: 6. Data Set Ready (DSR) from the printer must be connected to Pin #6 on the 232SPS2 module. 7. Clear To Send (CTS) from the printer should be connected to Pin #5 on the 232SPS2 module. 8. Data Carrier Detect (DCD) from the printer should be connected to Pin #8 on the 232SPS2 module. NOTE: IBM PC’s (or compatible) serial ports and serial printers are both DTE devices. Therefore, a null modem cable ( like a serial printer cable!
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TABLE B-4 DB-9 Serial Port Connections (P to S) Serial Port 232SPS2 (DTE) (DCE) DB-9S Signal Name Direction DB-25P Pin # Pin # 1 Data Carrier Detect <----------- 8** 2 Receive Data <----------- 3 3 Transmit Data -----------> 2 4 Data Terminal -----------> 20 Ready 5 Signal Ground 7 6 Data Set Ready <----------- 6** 7 Request to Send 4 8 Clear to Send <----------- 5** * When using XON/XOFF control, this connection may not be required. ** Some printers may require this connection. B-6 Appendix B
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APPENDIX C: SOFTWARE HINTS PARALLEL TO SERIAL MODE In parallel to serial mode, data from the computer is output through the parallel port. The 232SPS2 will send the data to the serial printer. The following command can be entered at the DOS prompt to send a data out the parallel port: PRINT filename This command will output filename out the parallel port. The first time that this command is executed, you will be prompted for the PRN device (LPT1, LPT2, etc. ). For this device, you should en
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MODE COM1: 96,n,8,1,p If any of the parameters are omitted, the most recent setting will be used. It is recommended that the "p" option be used for the retry option. If the "p" is not used, a device busy error may occur. To send data out the serial port, the following command can be entered at the DOS prompt: TYPE filename > COM1 This command will send filename out COM1. C-2 Appendix C 232SPS24595 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815)
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APPENDIX D: TROUBLESHOOTING Symptom Possible problem Solution No data is being Printer is off-line Put printer on-line printed. Printer is out of paper Fill printer with paper Improper dipswitch Check settings settings (Table 5.1) Improper mode selected Wrong type of flow control Serial port settings do Set serial ports to not match match (Table 5.1, Appendix C) No or not enough Check power on power to 232SPS2 232SPS2 (Ch. 4) Improper connections Check connections (Ch. 2, 3, Appendix A, B) Conn
