Hioki 3169-20 Bedienungsanleitung

RS-232C

INSTRUCTION MANUAL

For 3169-20/21

Contents

Introduction.................................................................................1

Safety Notes...............................................................................1

Chapter 1 Specification ______________________ 3

Chapter 2 Details on Interface RS-232C _________ 5

2.1 Communication Methods .............................................5

2.1.1 Message Format .............................................................6

2.1.2 Output Queue and Input Buffer .....................................10

2.1.3 Setting Command .........................................................11

2.2 Flow Control ...............................................................12

Chapter 3 Command Function________________ 15

3.1 Command Reference .................................................15

3.1.1 Command Reference Format ........................................16

3.2 Command List ............................................................65

3.2.1 Command List ...............................................................65

3.2.2 Command Hierarchical Structure ..................................70

3.2.3 Enabled Commands by Status ......................................72

3.2.4 Initialization Item List .....................................................75

3.2.5 RS-232C Troubleshooting .............................................76

Contents

Introduction

This instruction manual provides details of the RS-232C communica-

tions interface for the 3169-20/21 CLAMP ON POWER HiTESTER.

For the specifications of the RS-232C and connection with a PC, see

Chapter 9 "Using the Instrument with a Computer" (145 page), of the

instruction manual.

Safety Notes

This manual contains information and warnings essential for safe

operation of the product and for maintaining it in safe operating condi-

tion. Before using the product, be sure to carefully read the following

safety notes.

Safety Symbols

The following symbols in this manual indicate the relative importance

of cautions and warnings.

To connect the 3169-20/21 to a PC, use the optional 9612 RS-232C

CABLE.

Indicates that incorrect operation presents an

extreme hazard that could result in serious injury or

death to the user.

Indicates that incorrect operation presents a signifi-

cant hazard that could result in serious injury or

death to the user.

Indicates that incorrect operation presents a possibil-

ity of injury to the user or damage to the product.

Advisory items related to performance or correct

operation of the product.

Transfer Method

Connector Specifications

Specification Chapter 1

Transfer method Full duplex

Synchronous method Asynchronous communication method

Baud rate 2400/ 9600/ 19200/ 38400 bps

Data length 8 bits

Parity check None

Stop bit 1

Message Terminators

(Delimiter)

CR+LF, CR

Flow control None, XON/XOFF, RTS/CTS

Pin Functions CCITT EIA JIS Signal

Name Pin

Circuit No. Code Addr. Code Addr.

2Receive Data 104 BB RD RxD 2

3Send Data 103 BA SD TxD 3

5Signal Ground 102 AB SG GND 5

7Request to Send 105 CA RS RTS 7

8Clear to Send 106 CB CS CTS 8

Communication Methods

Various messages are supported in order to control the 3169-20/21

through the interface.

Messages are divided into program messages, which are sent to the

3169-20/21 from the PC, and response messages, which are sent to

the PC from the 3169-20/21.

The message system has the following hierarchy.

Details on Interface

RS-232C Chapter 2

2.1 Communication Methods

3169-20/21

Program messages

Response messages

Program messages

Response messages

Answer messages

Messages

Command messages

Query messages

Communication Methods

2.1.1 Message Format

Program Message Program messages can be divided into either command messages or

query messages.

• Command Message

Orders for controls of the unit, such as for making measurement condition

settings or for reset or the like.

(example)

Command message which sets the frequency

:FREQUENCY 60

• Query Message

Orders for responses relating to results of operation, results of measure-

ment, or the state of device settings.

(example)

Queries the current frequency

:FREQUENCY?

Response

messages

After a query message has been received, a response message is

produced the moment that its syntax has been checked.

Whether or not headers are prefixed to response messages is set by

the HEADer command.

The response-message unit parameter can be changed from a semi-

colon (;) to a comma (,) using the :TRANsmit:SEParator com-

mand. The parameter is set to a semicolon (;) by default.

Header ON

U1_INST[V] +101.25E+0;I1_INST[A]_1 +50.246E+0

Header OFF +101.25E+0;+50.246E+0

Answer Message An answer message is a character string created after one line of data

(up to the terminator) from a PC has been analyzed and processed.

This string is returned to the PC. Using this data, the 3169-20/21 is

synchronized with the PC.

Header portion Space Data portion

Header portion Question mark

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