enraf CIU Prime 880 User Manual

Instruction manual CIU Prime type 880 (CIU858 emulation) Page 1
Instruction manual
CIU Prime type 880
(CIU858 emulation)
Version 1.2
November 2000
Part no.: 4416529
Enraf B.V.
P.O. Box 812
2600 AV Delft
Netherlands
Tel.: +31 15 2698600, Fax: +31 15 2619574
Email: Info@enraf.nl
http://www.enraf.com
Offices in: Netherlands - France - Germany - Russia - UK - USA - China - Singapore

enraf CIU Prime 880 Specifications

General

Brand	enraf
Model	CIU Prime 880
Category	Cell Phone
Language	English

Summary

Preface

Safety and Prevention of Damage

Notes highlight special matters for the reader's attention.

Legal Aspects

Enraf disclaims responsibility for injury or damage from procedural deviations.

Additional Information

Contact Enraf or representative for further information.

Introduction

CIU Prime

Interface unit between field instrumentation and inventory systems.

Field Ports

Interfaces for EN-bus or RS-232C/RS485 input boards.

Host Ports

RS-232C/RS485 output boards for connecting to other systems.

Automatic Polling

CIU automatically polls gauges and stores data in a database.

Communication Parameters

Transmission Mode

Asynchronous RS232-C/RS485, non-isolated, DTE-side, host port 2.

Baudrate

Supported baud rates: 1200, 2400, 4800, 9600, 19200.

Parity

Supported parity options: Odd or Even.

Start Bit

The start bit is set to 1.

Data Bits

Data bits are 7, LSB first (7 bits ASCII character).

Stop Bit(s)

The stop bit is set to 1.

TX/RX Mode

Transmission/Reception mode is Half Duplex.

Turn Around Delay

Turn around delay is adjustable in milliseconds.

CIU (858) Address

Defines CIU858 emulation address based on fieldport type.

Communication Procedure

Command Records

Protocol uses request/reply schedule with command and answer records.

Record Structure

Records consist of STX, DATAFIELD, ETX, BCC for envelope.

General Form

General record form: STX ADDRESS(ES) TOI TOR (DATA) ETX BCC.

CIU Individual Command Record

Command executed in CIU Prime, sends back an answer record.

Instrument Individual Command Record

CIU passes records to field instruments without CIU address.

Instrument Group Command Record

Commands transmitted to all connected instruments, without CIU address.

CIU Answer Records

Records transmitted to computer system after CIU individual command.

X-record (Identification Record)

Implemented for compatibility, provides a default answer.

Time-out Record

Transmitted when field instrument is not responding or malfunction occurs.

Instrument Answer Records

Instrument answers to CIU, which passes it to the computer system.

BCC Calculation

BCC calculated by binary sum without carrying over transmitted bytes.

ACK Characters

CIU transmits ACK characters if busy, acknowledging command record.

Appendix A: Related Documents

Instruction Manual 880 CIU Prime

Manual for 880 CIU Prime.

Instruction Manual 880 CIU+

Manual for 880 CIU+.

Instruction Manual Modbus™ Protocol

Manual for Modbus™ protocol.

Instruction Manual ENSITE Pro - 880 CIU Prime

Manual for ENSITE Pro - 880 CIU Prime.

Instruction Manual ENSITE Pro - 880 CIU+

Manual for ENSITE Pro - 880 CIU+.

Instruction Manual ENSITE - ENTIS Pro under Windows NT

Manual for ENSITE - ENTIS Pro under Windows NT.