Teledyne 2002 instruction manual Communications Option Board, RS-232-E Interface Specifications

Page 29

SECTION 6

Communications Option Board

Both RS-232 and RS-485 communication interface boards are available as an option for the Model 2002.The communication option boards allow data to be output to a host computer with the appropiate interface. Connection to the RS-232 or RS-485 communication interface boards are via a 9 pin D-subminiature female connector.

6.1RS-232-E Interface Specifications

Format

EIA standard RS-232-E, full-duplex, no handshaking, asynchronous

Data Rate

9600 baud

Character Length

Eight data bits

Parity

No parity

Stop bits

One stop bit

A common application of the RS232 version of the HPM-2002, is to connect the pressure gauge directly to the serial port of a PC. This is done by first wiring a communication cable in the

Figure 6.1

manner shown below.

PIN

MNEMONIC

SIGNAL

DESCRIPTION

 

 

 

 

 

 

 

 

2

TX

Transmit Data

Transmits data within RS-232-E voltage levels

 

 

3

RX

Receive Data

Accepts data within RS-232-E voltage levels.

 

 

5

SG

Signal Ground

Establishes the common ground reference

 

 

 

 

 

potential for all interchange circuits

 

 

when

 

 

communicating via RS-

 

 

232-E.

 

 

 

 

 

4

CTS

Clear to send

Host computer ready to accept data. (Reserved

 

 

 

 

 

for future use, not implemented by present

 

 

 

 

 

software.

 

 

8

RDY

Ready

Ready to receive data (always high, not

 

 

 

 

 

implemented by present software.

 

 

 

 

 

 

 

 

 

Model 2002 page 29

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Contents Teledyne Hastings Manual Print History Table of Contents 12.0 4-20mA Interface Option BoardVolt Interface Model 2002 Sensors FeaturesGeneral Information Model 2002 Control Unit SpecificationsQuick Start InstallationReceiving Inspection Control Unit Installation Environment Transducer InstallationPanel Mount Instructions Transducer Cable AttachmentModel Control Unit Front Panel Front Panel OperationOverall Functional Description Scientific Notation RUN Mode Normal OperationSpeed Adjust High and LOW Set Point Modes CAL ModeEeprom Calibration Restoration Maintainance and Repair Midrange Coefficient Adjustment Zero Coefficient AdjustmentGAS Mode Atmosphere Coefficient AdjustmentDefault Calibration Restoration Units ModeThis page was intentionally left blank Analog Output Rear Panel DescriptionRemote Zero Input Voltage to pressure conversion example TTL Outputs Model 2002 Analog OutputModel Rear Panel Detail Power Entry ModulePiezoresistive Sensor Theory of OperationVo = SPV+V1 View A-A Et = Es + Er + Eg Pirani SensorEs = K ∆T Am/L Er = σεTh4-Ta4AsPage Dual Sensor Operation Eg = Kg ∆T As/∆x= a L 273/T 1/2T -T a P Model Dual Sensor Vacuum Gauge 28 Model Communications Option Board RS-232-E Interface SpecificationsFor RS-485 Half Duplex 2 wire Interface Connector Pin Assignments for RS-485Interrogation Commands Command SyntaxCalibration Adjustment Commands Parameter Modification CommandsReset / Restore Commands Digit# Device StatusRelay Interface Option Board Relay Board SpecificationsRelay Connector Pin Assignment Operation MA Interface Option Board Channel 10V Interface Option Board 0-10V Interface Connector Pin AssignmetsVchannel 1 = PTorr 100 Vchannel 2 = PmTorr Troubleshooting Guide 42 Model Non-Warranty Repair Policy Warranty and RepairWarranty Repair Policy 44 Model Diagrams and Drawings KF-25 HPM-2002-06 Mini Conflattm HPM-2002-03KF-16 HPM-2002-05 O.D. Smooth Tube HPM-2002-07 NPT HPM-2002-01VCR HPM-2002-02 4 Conflattm HPM-2002-04Panel Cut-Out Dimensions Model Out Line DimensionsMounting Clip Attachment Panel Mounting50 Model Model 2002 52 Model Model 2002 54 Model
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2002 specifications

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