Measurement-computing Serial488/4 Manuale Utente

1996-1997 by Measurement Computing Corp., Part No. Serial488-901, Rev. 1.2Printed in the United States of America Measurement Comput

Section 1 IntroductionTerminator: any 8 bit valueHandshaking: Clear to Send (CTS) / Request to Send (RTS), XON/XOFF, or noneI/O buffers:

Section 1 IntroductionGeneral:$51,1*Service: This product contains no operator serviceable parts, oroperator replaceable parts within the case. Fuse

Section 1 IntroductionFuse: 1/4A Slo Blo (for 105-125V power line) or 1/8A Slo Blo (for 210-250V powerline)&$87,21Fuse Failure: Fuse failure

Section 2 Getting Started2.1 Getting Started2.1 InspectionThe Serial488/4 was carefully inspected, both mechanically and electrically

Section 1 Introduction2.2

Section 2 Getting Started2.3TALK ON when the Serial488/4 is in the Talker active state, OFF when the Serial488/4 is in the Idle or Listener active sta

Section 1 Introduction2.4Figure 2-2. SW1 Factory Default SettingIEEE Address = 8Switch Side ViewDOT0112345 678Dual Primary AddressingModeNot UsedT

Section 2 Getting Started2.5Figure 2-3. SW1 View for Addressing Mode SelectionSwitch Side ViewDOT0112345 678Dual Primary AddressingMode0112345 678Sec

Section 1 Introduction2.6Figure 2-4. Pictorial View of the Secondary Addressing Mode Port 2 Control / Status Port 1Control / Status Port 3 Control /

Section 2 Getting Started2.7command/status and serial data addresses w hen using the dualprimary addressing mode.Figure 2-5 Pictorial View of the Du

Warranty Information Contact Measurement Computing by phone, fax, or e-mail in regard to warranty-related issues: Phone: (508) 946-5100, fax: (508) 9

Section 1 Introduction2.8Figure 2-6. SW1 View for IEEE Bus Address Selection0 x 161 x 8 0 x 40 x 20 x 1= 8= 0= 0= 0+IEEE Address = 8= 0Switch Side

Section 2 Getting Started2.92.3.3 IEEE 488 Bus Terminator SelectionThe terminating characters sent when status is output by theSerial488/4 are set by

Section 1 Introduction2.10 buffer (character) space. Of the available queues, 398 are issued w ithout regard tocontrolling the receipt of additional

Section 2 Getting Started2.112.5.1 RS-232/422 Configuration JumpersEach serial port is capable of operating w ith either RS-232 or RS-422electrical c

Section 1 Introduction2.12To reconfigure a serial port for RS-422 operation, remove the twelveposition configuration jumper and reinsert it so that

Section 2 Getting Started2.13Figure 2-8. View of Alternate Port 1 Configurations RS-232, RS-422 Unterminated, & RS-422 TerminatedRS422 RS232JP104

Section 1 Introduction2.14Configuration of the serial ports may be accomplished at any time bysending one or more command strings to the Serial488/4 c

Section 2 Getting Started2.15PRINT#1,"OUTPUT0800;P4A1B10C1D1X"Select port 4 and specify2 stop bits 19200 baud, no parity, and 8 data bits2.5

Section 1 Introduction2.16option (N0) is normally used. T his option w ill cause the Serial488/4 tosend XOFF and XON control characters depending on

Section 2 Getting Started2.17TxD- Transmit Data (output)This pin transmits serial data to an RS-232 or RS-422 device. Theserial data received is sent

Table of ContentsSection1 Introduction Page1.1 General Description 1.11.2 Available Accessories 1.21.3 Specifications 1.31.4 Abbreviations 1.4Section

Section 1 Introduction2.184096 memory locations are available in its internal buffers. Ifavailable memory drops below 4096 bytes, the Serial488/4

Section 2 Getting Started2.19Table 2-2. RS-232 Serial Port Pin ConnectionsPin DescriptionInput/Output1 No connection2 Receive data (RxD-) Input3 Trans

Section 1 Introduction2.202.6 IEEE 488 Bus ImplementationThe Serial488/4 implements many of the capabilities defined by the IEEE 4881978 specificati

Section 2 Getting Started2.212.6.2 My Listen Address (MLA), My Secondary Address (MSA)The Serial 488/4 is addressed to listen in one of tw o ways dep

Section 1 Introduction2.22The Serial488/4 will continue to try to output its serial poll response until itis serial poll disabled by the controller.2.

Section 2 Getting Started2.23 Figure 2-6. View of Enclosure showing Rack Hardware InstallationEnclosureRack EarTop View(2 per ear)EnclosureTop or Bott

Section 1 Introduction2.242.8 PowerupTo begin operating the Serial488/4, plug the power cord into an AC outlet.WARNINGThe interface is intended for

Section 2 Getting Started2.25the Serial488/4 by depressing the rear panel pow er switch. A ll of the front panelLEDs should light for approximately

Section 1 Introduction2.26CMD>OUTPUT09;hello messagesend "hello message" out port 1CMD>ENTER081.3A0B009C2D1G0I00000L1N0O00000T010U3por

Section 2 Getting Started2.27CMD>ENTER0800C2 C2 is returned since we changed the defaultCMD>OUTPUT0803;hello messagesend "hello message&quo

Table of ContentsSection 3 Command Descriptions (cont'd) PageBaud Rate (Bn) 3.3Parity (Cn) 3.4Data Bits (Dn) 3.5Error Query (E?) 3.6Flush (Fn) 3

Section 3 Command Descriptions3.1Command DescriptionsControl of the Serial488/4 is implemented with 22 bus commands, described herein detail. Example

Section 3 Command Descriptions3.2Stop Bits AnThe Stop Bits command programs the number of stop bit

Section 3 Command Descriptions3.3Baud Rate BnThe Baud Rate command programs the speed at which serial data istran

Section 3 Command Descriptions3.4Parity CnThe Parity command specifies the parity, if any, to

Section 3 Command Descriptions3.5Data Bits DnThe Data Bits command programs the number of data bits containe

Section 3 Command Descriptions3.6 Error Query E?The Error Query is used to determine the present err

Section 3 Command Descriptions3.7Flush FnThe Flush command is used to discard serial data for a sele

Section 3 Command Descriptions3.8Handshake Type GnThe Handshake Type command determines the flow control me

Section 3 Command Descriptions3.9Input Query I?The Input Query command returns the number of characters available

Section 3 Command Descriptions3.10Status EOI KnThe EOI line is one of five interface management line

Table of ContentsSection 4 IEEE 488 Primer (cont'd) Page4.6 Data Lines 4.74.7 Multiline Commands 4.74.7.1 Go To Local (GTL) 4.74.7.2 Listen Addre

Section 3 Command Descriptions3.11Data EOI Ln The Data EOI command specifies how the IEEE 488 EOI line will be

Section 3 Command Descriptions3.12Service Request (SRQ) MnThe Service Request (SRQ) mode is used by the Serial488/4 t

Section 3 Command Descriptions3.13M128 will generate a Service Request when the Serial488/4 has used up most ofits available memory. This provides an

Section 3 Command Descriptions3.14Handshake Control NnThe Handshake Control, in conjunction w ith the Handshake

Section 3 Command Descriptions3.15Example 1: Select automatic hardw are handshaking using dual primary addressingmode.PRINT#1,"CLEAR08"rese

Section 3 Command Descriptions3.16Output Query O?The Output Query command returns the number of charact

Section 3 Command Descriptions3.17Port Select PnThe Port Select command determines which port is selected fo

Section 3 Command Descriptions3.18Break QnThe Break command enables or disables the sending o

Section 3 Command Descriptions3.19Save Configuration SnThe Save Configuration command is used to save a non-volatile co

Section 3 Command Descriptions3.20Example 2: Restore the default configuration using secondary addressing mode.PRINT#1,"OUTPUT0800;S0x

Section 3 Command Descriptions3.21Serial Terminator TnThe Serial Terminator command is used in conjunction with the Dat

Section 3 Command Descriptions3.22Status UnThe Status command selects the type of status mess

Section 3 Command Descriptions3.23 The format of the status byte returned by the Serial488/4 after receiving a U1through U4 command is as follows

Section 3 Command Descriptions3.24M8SRQ on serial port #4 data inM16SRQ on ReadyM32SRQ on error conditionM128SRQ on memory low conditionNote

Section 3 Command Descriptions3.25B63600 Baud selectedB74800 Baud selectedB87200 Baud selectedB99600 Baud selectedB1019200 Baud selectedB1116 x Extern

Section 3 Command Descriptions3.26Q#BreakQ0Stop sending break characters.Q1Send break characters.T###Current Serial Terminator characterU#Se

Section 3 Command Descriptions3.27Version Query V?The Version Query command returns the Serial488/4 firmw are revi

Section 3 Command Descriptions3.28Execute XCommands sent to the Serial488/4 w ill result in no act

Section 3 Command Descriptions3.29Bus Terminator YnThe IEEE 488 bus terminator command selects the characters sent a

Section 3 Command Descriptions3.30Memory Query Z?The Memory Query command returns the number of characte

Section 1 IntroductionIntroduction1.1 General DescriptionThe Serial488/4 is a four port serial RS-232 or RS-422 interface to the IEEE 488bus. Each

Section 3 Command Descriptions3.31Serial Poll Status ByteThe Serial Poll Status byte is sent upon receiving the serial poll command fromthe controller

Section 3 Command Descriptions3.32the DIO5 bit is set. An Execute command (X) must be received before theDIO5 bit can be cleared.DIO6 DIO6

Section 4 IEEE 488 Primer4.1IEEE 488 Primer4.1 HISTORYThe IEEE 488 bus is an instrumentation communication bus adopted by theInstitute of Electrical

Section 4 IEEE 488 Primer4.2At a committee meeting, everyone present usually listens. This is not the casewith the GPIB. The Active Controller select

Section 4 IEEE 488 Primer4.3}DIO1-8DAV NRFD NDAC IFC ATN SRQ REN EOI To Other DevicesDevice 1 System Controller Able to Talk, Listen, and ControlD

Section 4 IEEE 488 Primer4.44.3 SEND IT TO MY ADDRESSIn the previous discussion, the terms Addressed to Talk and Addressed toListen were used. Thes

Section 4 IEEE 488 Primer4.54.4.2 Interface Clear (IFC)The IFC line is used only by the System Controller. It is used to placeall bus devices in a k

Section 4 IEEE 488 Primer4.64.5 HANDSHAKE LINESThe GPIB uses three handshake lines in an "I'm ready - Here's the data - I've goti

Section 4 IEEE 488 Primer4.7All ReadyAll ReadyNone ReadyNone ReadyValid Not ValidNot ValidValid1st Data Byte 2nd Data ByteAll AcceptAll AcceptNone A

Section 4 IEEE 488 Primer4.84.7.2 Listen Address Group (LAG)There are 31 (0 to 30) listen addresses associated with this group. The 3most significant

Section 1 Introduction1.2 Available AccessoriesAdditional accessories that can be ordered for the Serial488/4 include:CA-7-1 1.5 foot IEEE 488 Cable

Section 4 IEEE 488 Primer4.94.7.8 Selected Device Clear (SDC)This causes a single device to be initialized to a pre-defined or power upstate. ($04)4.

Section 4 IEEE 488 Primer4.104.7.14 Parallel Poll Configure (PPC)This configures devices capable of performing a Parallel Poll as towhich data bit the

Section 4 IEEE 488 Primer4.114.8.1 Serial PollSuppose the Controller receives a service request. For this example,let's assume there are severa

Section 5 Service Information5.1Service Information5.1 Factory Service-EASUREMENT#OMPUTING maintains a factory service center in Norton, Ma.If prob

Section 5 Service Information5.35.4 Serial488/4 Replaceable Parts ListSchematic Part Number DescriptionC101-C131 C-5-.1 Ceramic, 25vC132 C-2-10 Elect

Appendix A Serial488/4 Command SummaryA.1Command Code DescriptionStop Bit(s) A0Selects 1 stop bit for selected portA1Selects 2 stop bits for selected

Appendix A Serial488/4 Command SummaryA.2Command Code DescriptionHandshakeType G0Sets handskake to Rts/Cts (hardware)G1Sets handskake to Xon/Xoff (s

Appendix A Serial488/4 Command SummaryA.3Command Code DescriptionP3Select serial port 3P4Select serial port 4P?Returns currently selected serial portB

Section 1 Introduction&$87,21Please read this manual carefully! If equipment is used in anymanner not specified in this manual, the protection pr

Appendix B Character Codes And IEEE Multiline MessagesB.1NULSOHSTXETXEOTENQACKBELBSHTLFVTFFCRSOSIDLEDC1DC2DC3DC4NAKSYNETBCANEMSUBESCFSGSRSUSSP!"#