KEYENCE DL-RS1AFD-MH User Manual

RS-232C Communication Unit

DL-RS1A

User's Manual (FD-MH Edition)

Read this manual before using the system in order to achieve maximum performance. Keep this manual in a safe place for future reference.

96143E

Introduction

This manual provides an overview of the RS-232C communication unit DL-RS1A and describes the functions and procedures of the unit. Be sure to read this manual carefully to ensure safe performance and function of the unit. Keep this manual in a safe place for future reference. Ensure that this manual is passed to the end user.

Symbols

The following symbols alert you to important messages. Be sure to read these messages carefully.

It indicates cautions and limitations that must be followed during operation.

It indicates additional information on proper operation.

It indicates tips for better understanding or useful information.

It indicates a hazardous situation which, if not avoided, will result in death or serious injury.

It indicates a hazardous situation which, if not avoided, could result in death or serious injury.

It indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

It indicates a situation which, if not avoided, could result in product damage as well as property damage.

DANGER

WARNING

CAUTION

NOTICE

Important

Point

Reference

Safety Precautions

General Cautions

• At startup and during operation, be sure to monitor the functions and performance of the DL-RS1A for proper op erations.

•

We recommend that you take substantial safety measures to avoid any damage in the event that a problem occurs.

• Do not modify the DL-RS1A or use it in any way other than described in the specifications.

• When the DL-RS1A is used in combination with other instrum ents, functions and performance may be degraded,

depending on the operating conditions and surrounding environment.

• Do not use the DL-RS1A for the purpose of protecting the human body.

• Do not change the temperature drastically around the DL-RS1A and other devices including the accessories. Otherwise

condensation may be generated.

Handling Errors

Operating Precautions

■ Installation environment

To use the DL-RS1A correctly and safely, avoid installing it in the following locations. Failure to do so to may cause fire, electric shock, and malfunction.

• Locations that are humid, dusty, or poorly ventilated

• Locations with a high temperature, such as a place exposed to direct sunlight

• Locations where there are flammable or corrosive gases

• Location where the unit may be directly subjected to vibration or impact

• Locations where water, oil, or chemicals may splash onto the DL-RS1A

• Locations where static electricity is easily generated

■ Noise countermeasures

Isolate the unit from devices that generate high frequency electrical signals, power supply lines, or power lines. Otherwise, noise could cause a malfunction.

Turn off the power immediately in the following cases. Using the unit in abnormal conditions could cause fire, electric shock, or accident. Contact the nearest KEYENCE office for repair.

• If fluids including water, chemicals, or debris enter the unit

• If the unit is dropped or the case is damaged

• If abnormal smoke or odor is present

NOTICE

• Do not use the DL-RS1A with a voltage other than specified voltage, as this may cause fire, electric shock or equipment failure.

• Do not disassemble or modify the DL-RS1A. Doing so may cause fire or electric shock.

•

Be sure to turn off the power to the DL-RS1A and any connected devices before connecting or disconnecting the cables. Failure to do so may damage the unit.

• Do not turn off the power while setting a parameter. Otherwise, the settings may be partially or completely lost.

WARNING

NOTICE

Safety Precautions

General Cautions Handling Errors Operating Precautions

Installation environment Noise countermeasures

Before Using the Unit

Checking the Package Contents ............................................................................ .........2

Part Names and Functions....... ........................................................................................ 2

Connecting the Unit to Sensor Amplifiers

Mounting the Unit ............................................................................................................. 3

Mounting the unit on the DIN rail.................................................................................................3

Connecting the Unit to Sensor Amplifiers ........................................................................ 4

Available sensor amplifiers .........................................................................................................4

Connecting the DL-RS1A to DIN rail mount sensor amplifiers.................................................... 4

Connecting the Unit to External Devices

Communication Terminal Block ....................................................................................... 5

Terminal connection.................................................................................................................... 5

Connection wiring........................................................................................................................5

Optional cable............................................................................................................................. 5

Input circuit diagram ...................................................................................................................6

Communication Specifications

Communication Specifications.................................. .......................................................6

Sensor Amplifier ID Number Assignments.................................... ...................................6

DIN rail mount sensor amplifiers................................................................................................. 6

Commands and Responses

Overview of Commands and Responses...................................... ...................................7

Command format.........................................................................................................................7

Response ....................................................................................................................................7

Error response.............................................................................................................................8

Reading.................................... ........................................................................................ 8

Read from the specified sensor amplifier (SR command).......................................................... 8

Read all data from all sensor amplifiers (M0 command) ............................................................8

Read output states and data from all sensor amplifiers (MS command).................................... 9

Read with external input to the DRQ terminal (DRQ read)..........................................................9

Writing .............................................................................................................................. 9

Write to the specified sensor amplifier (SW command).............................................................. 9

Write to all sensor amplifiers (AW command)............................................................................. 9

Parameters of Commands and Responses

Electromagnetic Digital Flow Sensor FD-MH Series ...................................................... 10

Communication commands ......................................................................................................10

ID numbers................................................................................................................................10

Data numbers............................................................................................................................10

Control outputs.......................................................................................................................... 12

Error numbers............................................................................................................................13

Communication Response Time

Communication Response Time and Time Chart ................................................... .......13

SR command.............................................................................................................................13

M0 command and MS command.............................................................................................. 13

DRQ input..................................................................................................................................14

SW command and AW command............................................................................................. 14

Time Frames of Communication Response Time ................................................... .......14

T2 (DL-RS1A data processing time) .........................................................................................14

T3 (Command send time from external device)........................................................................14

T4 (DL-RS1A command processing time) ................................................................................15

T5 (Response send time from DL-RS1A) ..................................................................................15

T6 (Sensor amplifier settings change time)...............................................................................15

Specifications

Performance Specifications ........................................................................................... 16

Communication Specifications.................................. .....................................................16

Dimensions................................................................ ..................................................... 16

When the unit is mounted on the DIN rail..................................................................................16

When the optional fixture (OP-60412) is used...........................................................................16

Troubleshooting

ASCII Code Table

96143E

Before Using the Unit

Checking the Package Contents

Before using the DL-RS1A, check that the following items are all included.

All possible care was taken in packaging before shipment. However, in the event of defective broken, or missing items, please contact your nearest KEYENCE office.

Part Names and Functions

End unit x 2

OP-26751

RS-232C communication unit

DL-RS1A

Expansion connector cover

Switch protection sticker

Instruction manual

102#345

Sensor amplifier connecto

(for panel mount type/ large display type)*

2N345

* A sticker is attached as factory default.

4. Communication status indicators (green)

5. Alarm indicator (red)

6. Read/write setting switch

7. Power indicator (green)

8. Communication terminal block

Communication setup switch

Sensor amplifier connector

(for DIN rail mount type)

Before Using the Unit

(1) Communication setup switches

You can use different ON/OFF combinations to configure the communication settings.

• Make sure you cycle the power to the unit after modifying the communication settings. The modifications are not applied to the unit until it is powered down and power has been reapplied.

• Place the switch protection sticker supplied with the unit over the switches after you modify the settings.

(2) Sensor amplifier connector (for DIN-rail mount type)

Use this connector to connect DL-RS1A to a DIN-rail mount type sensor amplifier.

(3) Sensor amplifier connector (for panel mount type)

Use this connector to connect DL-RS1A to a panel mount type sensor amplifier. The optional extension cable (OP-35361) must be used for connection.

You cannot connect DL-RS1A simultaneously to a DIN-rail mount type sensor amplifier and a panel mount type sensor amplifier.

(4) Communication status indicators

These indicators show the communication status of DL-RS1A.

Setting Switch No. Combination

Baud rate

* Factory default positions are shown.

Do not use combinations other than those shown above for switches 1, 2, and 3.

Data bit length

* Factory default positions are shown.

Parity

* Factory default positions are shown.

ON ON

123 123 123 123 123

2400bit/s 4800bit/s

9600bit/s*19200bit/s 38400bit/s

Important

ON4ON

8 bit* 7 bit

ON56ON56ON56ON

None* Even Odd None

Important

Switch protection sticker

Point

Indicator Behavior

SD Lights up in green while data is being transmitted. RD Lights up in green while data is being received.

Before Using the Unit

(5) Alarm indicator

This indicator lights up in red. For information on the actions you should take when an alarm occurs, refer to "Troubleshooting" (page 17). After turning on the power, the alarm indicator lights for the following amount of time, and communication cannot be performed during this time.

(6) Read/write setting switch

Use this switch to allow or prohibit writing to the sensor amplifiers. (You can only manipulate this switch while the unit is active (turned on).)

(7) Power indicator

Lights up in green when the unit has power.

(8) Communication terminal block

Use the terminals on the terminal block to attach communication cables for connecting the unit with external devices.

* Recommended communication cable

KPEV-SP(1P) wire with balanced type twisted shield (strand wire) Nominal cross-section area 0.16mm

(AWG25) min.

A terminal cover is attached to the terminal block. The terminal cover must be placed over the terminal block when you finish connecting the cables.

The terminals for SG (Nos. 1, 4, and 5) are used in common with the blue wire of the sensor am plifier main unit.

No. of connected units Incommunicable time

1 to 5 Approx. 2 s

6 to 10 Approx. 4 s

11 to 15 Approx. 6 s

Position of the switch Description

(Factory default position)

The unit can read data from the sensor amplifiers. However, it cannot write settings to the sensor amplifiers.

The unit can both read data from and write settings to the sensor amplifiers.

DRQ

Communication cable

To external device

KPEV-SP(1P) wire with balanced type twisted shield (strand wire)

Terminal No.

Term inal Description

1SG

Connects to the shielded wire of the communication cable.

The terminals for SG (Nos. 1, 4, and 5) are internally shor t-circuited. 2 RD (input) Connects to the SD terminal of an external device via a co mmunication cable. 3 SD (output) Connects to the RD terminal of an external device via a communication cable. 4 SG The terminals for SG (Nos. 1, 4, and 5) are internally short-circuited. 5 SG The terminals for SG (Nos. 1, 4, and 5) are internally short-circuited.

6 DRQ (input)

When there is a short-circuit between DRQ and SG, the sensor amplifier data is

transmitted even without a command from the external device.

Point

Reference

Connecting the Unit to Sensor Amplifiers

This section describes how to mount a DL-RS1A and connect it to sensor amplifiers.

Mounting the Unit

■ Mounting the unit on the DIN rail

1 Fit the tab of the lower part of the unit to the

DIN rail. While inserting the unit in the

direction of arrow (1), push the body down in

the direction of arrow (2).

2 To detach the unit, lift the unit in the direction

of arrow (3) while pushing it in the direction

of arrow (1).

When using the mounting bracket (OP-60412), install it as shown in the illustration below.

(1)

(3)

(2)

Mounting bracket：OP-60412

Connecting the Unit to Sensor Amplifiers

You use DL-RS1A by connecting it to sensor amplifiers. The connection method varies according to the mounting type of the sensor amplifiers. Before connecting DL-RS1A, you must install the main unit and expansion units of the sensor amplifiers. For information on installing the sensor amplifiers, refer to the user's manual supplied with the sensor amplifiers.

■ Available sensor amplifiers

*1 You cannot connect DL-RS1A to panel mount sensor amplifiers.

Make sure that the sensor amplifiers are turned off before connecting the RS232C communication unit DL-RS1A to them. Connecting the unit while the sensor amplifiers are turned on may damage the unit.

Name Type of amplifier Main unit

Expansion unit

Max. connectable number

Electromagnetic digital

flow sensor

FD-MH Series

DIN rail mount

FD-MA1(A)

FD-MA1(A)P

FD-MA2(A)

FD-MA2(A)P

11 units (Main: 1, Expansion: 9, DL-RS1A: 1)

NOTICE

Connecting the Unit to Sensor Amplifiers

■ Connecting the DL-RS1A to DIN rail mount sensor amplifiers

1 Remove the expansion protective cover from the sensor amplifier that you want to connect to

the DL-RS1A.

2 Mount the DL-RS1A on the DIN rail and connect it to the sensor amplifier.

Make sure there is no space between the unit and the sensor amplifier.

3 Mount the end units (OP-26751, two units included) on either side of the sensor amplifier and

DL-RS1A unit and tighten the two screws on the top of each end unit.

(You can mount the end units in the same way you mount DL-RS1A.)

Sensor amplifier

Expansion protective cove

Sensor amplifier

DL-RS1

Connector

Check that the sensor amplifier connector (for DIN rail mounting) located on the side of DL-RS1A is not installed at an angle as shown in the illustration to the right. Connecting the unit with its connector installed at an angle to a sensor amplifier may damage the unit.

NOTICE

Sensor amplifier connector

RS-232C communication unit DL-RS1

End unit

Make sure you firmly insert DL-RS1A all the way into the sensor amplifier. Turning the power on when the unit is not inserted straight or firmly connected may damage the unit.

NOTICE

Connecting the Unit to External Devices

Communication Terminal Block

You can connect external devices such as a PC or PLC to the communication terminal block of DL-RS1A via the communication cables.

■ Terminal connection

* Recommended communication cable

KPEV-SP(1P) wire with balanced type twisted shield (strand wire) Nominal cross-section area 0.16mm

(AWG25) min.

A terminal cover is attached to the terminal block. The terminal cover must be placed over the terminal block when you finish connecting the cables.

The terminals for SG (Nos. 1, 4, and 5) are used in common with the blue wire of the sensor am plifier

main unit.

● Crimp-type terminal

Use the Y or round terminal for wiring to the I/O terminal. Use the Y or round terminal with the following dimensions.

Y terminal

Round terminal

DRQ

Communication cable

To external device

KPEV-SP(1P) wire with balanced type twisted shield (strand wire)

Terminal No.

Term inal Description

1SG

Connects to the shielded wire of the communication cable.

6 DRQ (input)

When there is a short-circuit between DRQ and SG, the sensor amplifier data is

transmitted even without a command from the external device.

Point

Reference

Excerpted from dimensions of the Y terminal areas B: Outer size of Y area d: Width of inner Y area

(joint area with screw)

Applicable dimension B: 6mm max. d: 3.2mm min.

Excerpted from dimensions of the round terminal areas B: Outer diameter d: Inner diameter

(joint area with screw)

Applicable dimension B: 6mm max. d: 3.2mm min.

φd

Connecting the Unit to External Devices

■ Connection wiring

Refer to the connection wiring diagram shown below when connecting DL-RS1A to an external device such as a PC.

• The length of the communication cable must not exceed 15 m.

•

Connect the shield wire of the communication cable to the SG terminal of the external device.

• Make sure that the shield wire does not touch other signal wires or the other terminals on the terminal block.

■ Optional cable

An optional cable shown below is used to connect to an external device such as a PC that has a D-sub 9-pin I/O connector.

Part number: OP-81283

Pin layout for D-sub 9-pin connector

*1 Pin numbers 4 and 6 are connected inside the connector. *2 Pin numbers 7 and 8 are connected inside the connector. *3 Two cables (black and black/white) are connected to the pin number 5.

DRQ

DL-RS1A

External device

(D-sub 9-pin)

Shield

Point

Pin No. Cable color

2 Red/white

3Red

5 Black, black/white

6*1-

33.2 25

5000

39.5 1

φ7.1

Front

Connecting the Unit to External Devices

Sample wiring

*1 Insulate either the black or black/white cable that is not used. *2 Connect the shield wire to the SG terminal of DL-RS1A. (Shield wire is connected to the

connector casing.)

The green and green/white-striped wires are not connected to any of the connector pins.

■ Input circuit diagram

* The terminals for SG (Nos. 1, 4, and 5) are connected internally with the blue wire of the sensor

amplifier main unit.

Red/White

Red

8CS

DRQ

Black, Black/White

DL-RS1A

(Communication terminal block)

External device

(D-sub 9-pin)

Shield

Reference

Main circuit

(Short-circuit current: 1 mA max.)

6 (DRQ)

+5V

1,4,5 (SG)

Communication Specifications

This section provides the communication specifications of DL-RS1A and describes how to configure the unit.

Communication Specifications

The following table lists the communication specifications for DL-RS1A.

For communication settings, refer to pa ge 2.

Sensor Amplifier ID Number Assignments

When the main sensor amplifier that is connected to DL-RS1A supports expansion units, the main sensor amplifier ID number "00" is automatically assigned to the main unit and ID numbers "01 to 09" to the expansion units.

You cannot change the assignment of sensor amplifier ID numbers.

■ DIN rail mount sensor amplifiers

Item Specifications

Communication method Full duplex Synchronization method Asynchronous Transmission code ASCII Communication speed 2400, 4800, 9600, 19200, 38400 bit/s (Factory default: 9600 bit/s) Data bit length 7 or 8 bits (Factory default: 8 bits) Parity check None, even, odd (Factory default: none) Stop bit length 1 bit

Data delimiter

Receive: automatically detect CR or CR + LF Send: fixed to CR + LF

Point

ID No. 00

Main Exp. Exp. Exp. Exp.

01 02 08 09

Sensor ampliﬁer DL-RS1A

+ 16 hidden pages