RKC INSTRUMENT CD101 Bedienungsanleitung

IMCD06-E2

Digital Controller

CD101/CD401

CD501/CD701

CD901

Communication

Instruction Manual

RKC INSTRUMENT INC.

CAUTIONS

 This manual is subject to change without prior notice.

 Examples of figures, diagrams and numeric values used in this manual are only for a better

understanding of the text, but not for assuring the result of operation.

 This manual may not be reproduced or copied in whole or in part without RKC's prior written consent.

 This instrument and manual are manufactured, prepared, then shipped under strict quality control.

However, if any defect is found, please contact your nearest RKC sales office or agent from which you

bought the system.

 RKC assumes no responsibility for any of the following damage which the user or third party may

suffer.

(1) Damage incurred as a result of using this instrument.

(2) Damage caused by the failure of the instrument, which cannot be predicted by RKC.

(3) Other indirect damage.

IMCD06-E2 i - 1

INTRODUCTION

Before using this instrument, please carefully read this manual for its correct use. In addition, after

reading the manual keep it available easily anytime.

USERS OF THIS MANUAL

This manual is prepared for all personnel who use CD101/CD401/CD501/CD701/CD901. However,

it is desirable that they have a fundamental knowledge of electrical engineering, process control and

communication.

WIRING PRECAUTIONS

• If failure or error of this instrument could result in a critical accident of the system,

install an external protection circuit to prevent such an accident.

• In order to prevent instrument damage or failure, protect the power line and the

input/output lines from high currents by using fuses with appropriate ratings.

POWER SUPPLY

• In order to prevent instrument damage or failure, supply power of the specified

rating.

• In order to prevent electric shock or instrument failure, do not turn on the power

supply until all of the wiring is completed.

INSTALLATION ENVIRONMENT

• In order to prevent fire, explosion or instrument damage, never use this instrument

at a location where flammable or explosive gases or vapor exist.

• This is a Class A instrument. In a domestic environment this instrument may cause

radio interference, in which case the user is required to take adequate measures.

NEVER TOUCH THE INSIDE OF THE INSTRUMENT

In order to prevent electric shock or burns, never touch the inside of the instrument.

Only RKC service engineers can touch the inside of the instrument to check the circuit

or to replace parts. High voltage and high temperature sections inside the instrument

are extremely dangerous.

NEVER MODIFY THE INSTRUMENT.

In order to prevent accident or instrument failure, never modify the instrument.

MAINTENANCE

• In order to prevent electric shock, burns or instrument failure, only RKC service

engineers may replace parts.

• In order to use this instrument continuously and safely, conduct periodic

maintenance. Some parts used in this instrument have a limited service life and may

deteriorate over time.

WARNING

IMCD06-E2

i - 2

INSTRUMENT SAFETY CAUTIONS

 This instrument is designed to be mounted on instrumentation panels. It is therefore manufactured

as part of the final product to facilitate wiring. This means that unauthorized personnel can easily

access the high-voltage sections in this instrument such as power terminals, etc. Therefore, when

this instrument is installed on the final product, the user should take the necessary measures for the

final product to ensure that unauthorized personnel cannot access the high-voltage sections, etc.

 In order to use this instrument correctly and safely, always observe the cautions described in this

manual when performing operations and maintenance. RKC assumes no responsibility for any

injury or accident resulting from not following these cautions.

NOTES ON INDICATIONS

The following indications are used in this manual to ensure the safe, correct use of the

CD101/CD401/CD501/CD701/CD901.

SIGNAL WORDS

SYMBOL MARKS

CAUTIONS PRIOR TO USE

 This instrument is intended to be used under the following environmental conditions. (IEC1010)

[OVERVOLTAGE CATEGORY II, POLLUTION DEGREE 2]

 To the instrument with power supply of 24 V, please be sure to supply the power from SELV

circuit.

 Before cleaning the instrument, check that the power is turned off.

 Remove stains on the display unit using a soft cloth or tissue paper.

 As the display unit is easily scratched, do not scrub or touch it with a hard object.

 The stains on the housing shall be wiped off by the cloth which is dipped into the neutral cleanser

diluted by water and wrung tightly, and finish it by a dried cloth.

 This instrument is protected from electric shock by reinforced insulation. So please arrange

reinforced insulation to the wire for input signal against the wires for instrument power supply,

source of power and loads as far as possible.

CAUTION

: Where there are possible dangers such as electric shock, fire (burns), etc. which

could cause loss of life or injury, precautions to avoid such dangers are

described.

: These describe precautions to be taken in case unit damage may result i

operating procedures are not strictly followed.

:Extra noted or precautions are added to operating procedures and explanations.

: This mark is used when great care is needed especially for safety.

: This mark is used to add extra notes, precautions or supplementary

explanations to table and figures.

WARNING

NOTE

∗

∗∗

∗

IMCD06-E2 i - 3

Name and number of this instruction manual :

Name : Digital Controller CD101/CD401/CD501/CD701/CD901

Communication Instruction Manual

Manual number : IMCD06-E2





Revisions

Date of revision Manual number Reason for revision

October 27, 1998 IMCD06-E1 The first edition issue

July 7, 1999 IMCD06-E2 Addition of controller types.

IMCD06-E2

i - 4

CONTENTS

Page

1. SPECIFICATIONS ................................................................ 1

2. WIRING ................................................................................. 2

3. SETTING FOR COMMUNICATION ...................................... 4

3.1 Transfer to communication setting mode ........................................................4

3.2 Communication parameter selection...............................................................5

3.3 Device address setting ....................................................................................6

3.4 Communication speed setting .........................................................................8

3.5 Data construction setting...............................................................................10

3.6 Interval time setting .......................................................................................12

3.7 Notes under communication..........................................................................15

4. COMMUNICATION PROTOCOL ........................................ 18

4.1 Polling............................................................................................................18

4.1.1 Polling procedure .............................................................................................19

4.1.2 Polling procedure example (When the host computer requests data) ..............22

4.2 Selecting........................................................................................................23

4.2.1 Selecting procedure .........................................................................................23

4.2.2 Selecting procedure example (When the host computer sends a set value) ....26

5. COMMUNICATION IDENTIFIER ........................................ 27

6. TROUBLESHOOTING ........................................................ 31

7. ASCII 7-BIT CODE TABLE (Reference) ............................ 32

IMCD06-E2 1

1. SPECIFICATIONS

Interface: Based on EIA standard RS-485

Connection method: 2-wire system, half-duplex multidrop connection

Communication distance: 1 km (max.)

* However, the maximum communication distance varies slightly

with the surroundings such as cables etc.

Synchronous method: Start/stop synchronous type

Communication speed: 2400 bps, 4800 bps, 9600 bps, 19200 bps

Data type: Start bit: 1

Data bit: 7 or 8

Parity bit: Unused or Used (Odd number or even number)

Stop bit: 1 or 2

Protocol: ANSI X3.28 subcategory 2.5, A4

Polling/selecting type

Error control: Vertical parity (With parity bit selected)

Horizontal parity (BCC check)

Maximum connection: 32 sets including a host computer

Communication code: ASCII 7-bit code

Termination resister: 100 Ωor more (Externally connected)

Xon/Xoff control: None

Signal logic:

Signal voltage Logic

V (A) > V (B) 0 (Space status)

V (A) < V (B) 1 (Mark status)

IMCD06-E2

2. WIRING

Up to 32 CD101/CD401/CD501/CD701/CD901 digital controller (hereinafter, the "controller")

including the host computer can be connected if multidrop connected by RS-485.

 Terminal No. and signal details

CD101/CD401/CD501/CD901

Terminal No.

Signal name

Name

Signal direction

Controller Host computer

13 SG Signal ground

14 T/R(A) Send data/Receive data

15 T/R(B) Send data/Receive data

CD701

Terminal No.

Signal name

Name

Signal direction

Controller Host computer

7 SG Signal ground

8 T/R(A) Send data/Receive data

9 T/R(B) Send data/Receive data

In order to prevent electric shock or instrument failure, do not turn on the power

until all the wiring is finished.

WARNING

2. WIRING

IMCD06-E2 3

 When host computer interface is RS-485

It is necessary that a circuit to transfer send and receive be built-in the host computer.

T/R

(

)

T/R

(

)

T/R

(

)

T/R

(

)

(

RXD

)

: Receive

(

TXD

)

: Send data

Host com

uter

RS-485

T/R

(

)

T/R

(

)



Up to 31

Paired wire

Send/receive

selection signal

Twisted pair wire

(with shield)

*R: Use a terminal resistor with a combined resistance of more than 100 Ω.

Controller

SD (TXD) and RD (RXD) : Negative logic

 When host computer interface is RS-232C

Communication level converter (RS-232C/RS-485) is used.

Controller

T/R(B)

T/R(A)

RS-485

T/R(A)

T/R(B)

RS-232C

Host computer

Communication level

converter

Twisted pair wire

(with shield)

Paired wire

*R: Use a terminal resistor with a combined resistance of more than 100 Ω.

When the host computer is for Windows 95/NT, use a communication level converter of

the automatic send/receive select type.

Recommended: CD485, CD485/V manufactured by Data Link, Inc. or equivalent.

CAUTION

2. WIRING

IMCD06-E2

 Connection example

(When up to 32 controllers including host computer are connected)

For details of the communication level converter and junction branch box BRA-100B-2, see each

Instruction Manual.

Host computer

Communication level converter

BRA-100B-2

BRA-100B-2 BRA-100B-2

2928 30

NOTE

0 1 2 3

ControllerControllerController

Device address

example

RS-485

RS-232C

RS-485

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