Measurement-computing Digital232 Manual de usuario

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Section 2 Getting Started2.2S1 Factory Default SettingsS2 Factory Default Settings

Section 2 Getting Started2.3Switch S1 is the 8-position dip switch close to the front of the unit. Switch S2 isnear the rear power switch. To modify

Section 2 Getting Started2.4 S1 View for Serial Baud Rate Selection

Section 2 Getting Started2.52.2.2 Xon/Xoff Serial Control SelectionSwitch S1-5 is used to enable Xon/Xoff serial control. When enabled, theDigital232

Section 2 Getting Started2.62.2.4 Serial Stop Bit SelectionSwitch SW1-8 determines the number of stop bits contained in each serialcharacter transmit

Section 2 Getting Started2.72.2.6 Serial Echo SelectionSerial data sent to the Digital232 will be echoed back to the serial host if S2-5is set to the

Section 2 Getting Started2.8either input or output. At power on, all 40 bits are in the input mode. Each 8 bitgroup is one port, beginning with Port

Section 2 Getting Started2.9Pin Description1 thru 8DATA PORT1 (Input or Output).Pin 1 is bit 1 (LSB), Pin 8 is bit 8 (MSB).Least Significant Port9 thr

Section 2 Getting Started2.102.3.3 Control LinesFive control lines enable handshaking of digital I/O data transfer to theDigital232. They are automa

Section 2 Getting Started2.11 TIMING DIAGRAM FOR STROBE OUTPUT2.3.3.3 External Data Ready [EDR] (Pin 46)The External Data Ready [EDR]

Warranty InformationYour IOtech warranty is as stated on the product warranty card. You may contact IOtech by phone,fax machine, or e-mail in regard

Section 2 Getting Started2.12 TIMING DIAGRAM FOR EDR AND INHIBIT2.3.3.5 Trigger (Pin 43)The Trigger output is pulse for approxi

Section 2 Getting Started2.132.3.3.6 Service (Pin 45)The Service input is an edge sensitive input capable of generating aService Request (SRQ). It i

Section 2 Getting Started2.14into the unit. If the problem is unresolved, refer to the Service Information sectionof this manual.Connect a serial cabl

Section 3 Command Descriptions3.1COMMAND DESCRIPTIONSControl of the Digital232 is implemented with 17 commands, described here indetail. Examples are

Section 3 Command Descriptions3.2RESET @The Reset command returns the Digital232 to it

Section 3 Command Descriptions3.3BIT SET AnThe Bit Set command programs a logic one outpu

Section 3 Command Descriptions3.4BIT CLEAR BnThe Bit Clear command will clear to a logic zero an

Section 3 Command Descriptions3.5CONFIGURE CnPorts 1 thru 5 are configured as inputs or outputs wit

Section 3 Command Descriptions3.6DATA Dn...ZThe Data command outputs up to 40 bits of data t

Section 3 Command Descriptions3.7FORMAT FnThe Format command determines the method by which

Table of ContentsSection1 INTRODUCTION Page1.1 General Description 1.11.2 Available Accessories 1.21.3 Specifications 1.3Section 2 GETTING STARTED Pag

Section 3 Command Descriptions3.8Data received for output to the digital ports must be contained within aprefix (D) and a suffix (Z). If the amount of

Section 3 Command Descriptions3.9Data received for output to the digital ports must be contained within aprefix (D) and a suffix (Z). If the amount of

Section 3 Command Descriptions3.10Data received for output to the digital ports must be contained within aprefix (D) and a suffix (Z) and each 4-bit q

Section 3 Command Descriptions3.11prefix (D) and a suffix (Z). If the amount of data sent is less than the numberof bits programmed as outputs, the l

Section 3 Command Descriptions3.12OUTPUT SELECT GnThe Output Select command determines the I/O port from whic

Section 3 Command Descriptions3.13HANDSHAKE HnThe Handshake control command enables software control

Section 3 Command Descriptions3.14Invert InThe Invert command is used to change the

Section 3 Command Descriptions3.15 Service Request (SRQ) MnThe Service Request (SRQ) mode is used by the Digital232

Section 3 Command Descriptions3.16Port PnThe Port command determines which port is

Section 3 Command Descriptions3.17INHIBIT QnThe Inhibit control command allows software con

Table of ContentsSection 3 COMMAND DESCRIPTIONS Page@ Reset 3.2An Bit Set 3.3Bn Bit Clear 3.4Cn Configure 3.5Dn…Z Data 3.6Fn Format 3.7Gn Output Se

Section 3 Command Descriptions3.18Data Ready RnThe Data Ready command enables digital input dat

Section 3 Command Descriptions3.19Test TnThe Test command is used to verify hardwa

Section 3 Command Descriptions3.20Status UnThe Status command (U0) will cause the Digi

Section 3 Command Descriptions3.21C# ConfigurationC0 All ports are inputsC1 Port 1 is an output, ports 2 thru 5 are inputsC2 Ports 1 and 2 are outputs

Section 3 Command Descriptions3.22I### Invert Control LinesI0 All control and data lines are active highI1 Inhibit output is active lowI2 Trigger outp

Section 3 Command Descriptions3.23Y# Serial TerminatorY0 CRY1 LFY2 LF-CRY3 CR-LF

Section 3 Command Descriptions3.24EXECUTE XCommands sent to the Digital232 will result in no

Section 3 Command Descriptions3.25Terminator YnThe serial terminator(s) defaults at power-on t

Section 4 Service Information4.1Service Information4.1 FACTORY SERVICEIOtech maintains a factory service center in Cleveland, Ohio. If problems areen

Section 1 Introduction1.1Introduction1.1 General DescriptionThe Digital232 is a digital input and output interface to the RS-232 standard. Theunit h

Section 4 Service Information4.24.2 Digital232 Component Layout (Mother Board)P102/ P103AB-+-+-+U102 2764U103 6264U104 74LS373U105 R6551APU114 26LS3

Section 4 Service Information4.34.3 Digital232 Component Layout (I/O Board)S201R205U204 MC68B21PU203 MC68B21PU202 MC68B21PU201 MC68B09PU205 74LS05R20

Appendix A Digital232 Command SummaryA.1Digital 232 Command SummaryCommand Code DescriptionBit Set AnSet bit n (1 thru 40)Bit Clear BnClear bit n (1 t

Appendix A Digital232 Command SummaaryA.2Handshake H0Pulse the Clear lineH1Pulse the Strobe lineH2Pulse the Trigger lineInhibit Q0Clear Inhibit lineQ1

Appendix A Digital232 Command SummaryA.3Test T0Turn off the TEST LEDT1Turn on the TEST LEDT2Perform a RAM and ROM test

Appendix B ASCII Character CodesB.1ASCII Character Codes Dec Hex CHR Dec Hex CHR Dec Hex CHR Dec Hex CHR 00 00 NUL 32 20 SPACE

Appendix C IBM PC InterfacingC.1IMB PC Interfacing10 REM *** DUMB TERMINAL PROGRAM FOR THE Digital23215 REM *** Running under I

Section 1 Introduction1.21.2 Available AccessoriesAdditonal accessories that can be ordered for the Digital232 include...CN-6-5050 Pin solder tab ed

Section 1 Introduction1.31.3 SpecificationsDIGITAL I/O:Configuration: Five 8 bit ports, programmable as inputs or outputs.Also included are programm

Section 2 Getting Started2.1GETTING STARTED2.1 INSPECTIONThe Digital232 was carefully inspected, both mechanically and electrically, priorto shipment