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PLC Connection Manual

1024-28

Touch Panel Display

VT3 Series

Refer to PLC Connection Manual for

other chapters and the appendix.

Mitsubishi Electric Corporation ServoAmplifier Connection

Whats External Equipment Connection?

Precautions on External Equipment Connection

Checks to Perform before Making Connections

System Configuration

Connection to VT3 Series

Unit Settings

Communication Conditions and Available Devices

List of Communication Errors

Connection with Converters

Target PLC

MELSERVO series

96017E-754

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- VT3 Series and DT Series PLC Connection Manual -

26-1 External Equipment Connection

In VT3, VT3 can be connected directly to external equipments from various manufacturers with communication

functions.

One communication port of VT3 can be connected to 31 external equipments. If MultiTalk function is used, up to 62 (2ports*1x31 units) can be connected to 1 VT3*2.

*1 RS232C-RS485 is required when connecting external devices with PORT2/PORT3,VT-TI of VT3 series in 1:N mode.*2 If external equipments are selected between PLC-A.PLC-B in the case of MultiTalk, PLC cannot be connected.

*3 When VT3 handy Series uses MultiTalk function, RS-232C/422A/485/Ethernet connecting cable (OP-87191/87192/

87193), or relay terminal block (VT-T1) + cable with removable connector (OP-87194/87195/87196) is required

In addition, MultiTalk function cannot be used in VT3-V7R/W4T(A)/W4M(A)/W4G(A).

Whats External Equipment Connection?

When external equipments are connected to VT3. Handy Series/VT3-V7R, be sure to connect

to one terminal of the communication cable, and set the terminator ON.

External equipment

VT No. 1

(terminator ON)

External equipment

VT No. 2

PORT2/3/4*2*3

External equipment

VT No. 7

: Communications cable KPEV-SB (1P)

Communications cable length 1,000m or less

External equipment

VT No. 30

(terminator ON)

External equipments from various manufacturers (Max. 31 units)

VT3 Series

Point

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Internal special device

When external equipments are connected, the connection state of external equipments shall be notified in the

following internal devices.

When external equipments are connected, the connection state of external equipments can be set in the following

internal devices.

"Chapter 6 Prior to Parts Setting", VT3 Series Reference Manual

Operations for "cut off/reset station No. in communication error"

Communication with the station No. in communication error is cut off when the "cutoff/reset station No. in

communication error" checkbox is selected. And this No. is regularly monitored and communication is started again

once the error is removed.

Operations in case of a communication error are as follows:

No operation is taken even if a timeout error occurs.

The device value of the station No. in communication error is as follows.

In communication before cut-off Hold value

When updating 0

During write operation Disabled

Precautions on External Equipment Connection

Device No. Description 1(ON) 0(OFF)

MB00D00 PLC_A VT No. 0 connection state Being connected to VT3 Not being connected to VT3


MB00D0F PLC_A VT No. 1 connection state Being connected to VT3 Not being connected to VT3


MB00D2F PLC_A VT No. 31 connection state Being connected to VT3 Not being connected to VT3

MB00D80 PLC_B VT No. 0 connection state Being connected to VT3 Not being connected to VT3

MB00D8F PLC_B VT No.15 connection state Being connected to VT3 Not being connected to VT3

MB00DA0 PLC_B VT No.16 connection state Being connected to VT3 Not being connected to VT3

MB00DAF PLC_B VT No. 31 connection state Being connected to VT3 Not being connected to VT3

Device No. Contents 1(ON) 0(OFF)

MB00D10 PLC_A VT No.0 connection setting Connected to VT3 Not connected to VT3

MB00D11 PLC_A VT No.1 connection setting Connected to VT3 Not connected to VT3

MB00D1F PLC_A VT No.15 connection setting Connected to VT3 Not connected to VT3

MB00D30 PLC_A VT No. 16 connection setting Connected to VT3 Not connected to VT3

MB00D3F PLC_A VT No. 31 connection setting Connected to VT3 Not connected to VT3

MB00D90 PLC_B VT No. 0 connection setting Connected to VT3 Not connected to VT3

MB00D9F PLC_B VT No.15 connection setting Connected to VT3 Not connected to VT3

MB00DB0 PLC_B VT No.16 connection setting Connected to VT3 Not connected to VT3

MB00DBF PLC_B VT No. 31 connection setting Connected to VT3 Not connected to VT3

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26-6 Connection to Servo Amplifiers from MITSUBISHI ELECTRIC

This section describes how to connect the servo amplifiers from MITSUBISHI ELECTRIC to VT3.

Here, make sure the necessary items used for connecting VT3 to inverters from MITSUBISHI ELECTRIC.

(1) Make sure that VT3 can be connected to servo amplifiers.

(2) Make sure if servo amplifier setting is necessary.

(3) Confirm the target PLC.

Be sure to check the above three points before connecting the PLC to the VT3/DT.

* Communication through equivalent RS-485 is made possible by means of wiring.

Checks to Perform before Making Connections

Series Name Servo amplifiers I/F Unit Setting Target PLC

MR-J2S series MR-J2S-ARS-422A* P.26-59 MELSERVO series

MR-J3 series MR-J3-A
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B

Connection to servo amplifiers from MITSUBISHI ELECTRIC

MR-J2S series

MR-J3 series

System Configuration

VT3 Series

RS-422

(RS-485 equivalent)

RS-422RS-485 equivalent

External equipment

MR-J2S-A

(Wiring diagram 3)

I/Flevel converter

N-48

VT3(PORT3)*

VT3(PORT2)/VT-T1*

VT3(PORT4)/VT-T1: Wiring diagram 1

VT3-V6H(G)/Q5H(G)Wiring diagram H40

VT3-V6H(G)/Q5H(G)*

VT3-V7R*

VT3-W4TA/W4MA/W4GA : Wiring diagram W40

VT3-V7R : Wiring diagram R1

* For the connection between converters and VT3, refer to"26-11 Connection with Converters".

VT3 Series

RS-422

(RS-485 equivalent)

RS-422(RS-485 equivalent)

External equipmentMR-J3-A

(Wiring diagram4)

I/Flevel converter

N-48

VT3(PORT3)*

VT3(PORT2)/VT-T1*


VT3-V6H(G)/Q5H(G)Wiring diagram H41

VT3-V6H(G)/Q5H(G)*

VT3-V7R*

VT3-W4TA/W4MA/W4GA: Wiring diagram W41

VT3-V7R: Wiring diagramR2

* For the connection between converters and VT3, refer to"26-11 Connection with Converters".
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The following describes wiring of connector cables.

The wiring diagrams recommended by MITSUBISHI ELECTRIC may differ from those presented in this manual.

There will, however, be no problems if wiring is performed according to the wiring diagrams in this manual.

Wiring diagram 1 (RS-422A: 4-wire)

Wiring diagram 2 (RS-422A: 4-wire)

The following diagram shall be referenced when CN3 ports of MR-J3 series servo amplifiers are

connected to VT3.

Connection to VT3 Series

Item Model Manufacturer Remarks

(1) Cable - - Cables (10BASE-T cable, etc) compliant with EIA 568


(3) Distributor BMJ-8 Hachiko Electr ic Without terminator

Be sure to configure VT3 at the termination.

Cut down the branch line (cable of (2)) as short as possible.

Add terminal resistor 150W (1/4W) at the terminal distributor. If commuincation is unstable,

remove the teminal resistor.

The maximum length of trunk line (total of (1)) is 15m.

VT3

PORT4Servo amplifier

(CN3)

Servo amplifier

(CN3)

*1

*2

A

B

SG

*1 Make short-circuit of RDN-TRE for servo amplifier at one end of communication cable.

*2 Terminal resistor not allowed at VT3 side.

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

Shielded Shielded

VT3

PORT4 DistributorServo amplifier

(CN3)

SDP

RDP

SDN

RDN

LG

LG

Terminator

(1501/4W)

Terminator

(1501/4W)

*2*1

*1 Terminal resistor not allowed at VT3 side.

*2 Add terminal resistance into inverters at one end of communication cable(1501/4W).

A

B

SG

5

3

4

6

1

7

Reference

CN3 CN3 CN3

Distributor

(1) (1)

(3) (3) (3)

(2)

Distributor

(1)

(2)

Distributor

(2)

VT3 Series

Point

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Wiring diagram 3 (RS-422A:4-wire)

Wiring diagram 4 (RS-422A:4-wire)

The following diagram shall be referenced when CN3 ports of MR-J3 series servo amplifiers areconnected to VT3.

Item Model No. Manufacturer Remarks

(1) Cables - -Reference to EIA 568cables(10BASE-T cable, etc)

(2) Cables - -Reference to EIA 568cables(10BASE-T cable, etc)

(3) Distributor BMJ-8 Hachiko Electric With terminal resistor

Be sure to configure VT3 into the terminal.

Please cut down the branch line (cable of (2)) as short as possible.

Please add terminal resistor 150W (1/4W) at the terminal distributor.

If the commuincation is unstable, remove the teminal resistor.

The maximum length of trunk line (sum of (1)) is 15m.

Converter*1 Servo amplifier

(CN3)

Servo amplifier

(CN3)

*2

+

-

SG

24V

0V

*1 Set the terminator switch ON even if the converter is at one end of communication cable.

*2 Make short-circuit of RDN-TRE for servo amplifier at one end of communication cable.

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

Shielded Shielded

Converter DistributorServo amplifier

(CN3)

SDP

RDP

SDN

RDN

LG

LG

Terminator

(1501/4W)

Terminator

(1501/4W)

*2*1

*1 Set the terminator OFF.

*2 Add terminal resistance into inverters at one end of communication cable.

(1501/4W)

+

-

SG

24V

0V

5

3

4

6

1

7

Reference

CN3 CN3 CN3

Distributor

(1) (1)

(3) (3) (3)

(2)

Distributor

(1)

(2)

Distributor

(2)

VT3 Series

N-48

Converter

Point

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Wiring diagram H40 (RS-485: 4-wire)

OP-87191: 3m, OP-87192: 5m, OP-87193: 10m

Wiring diagram H41 (RS-422A: 4-wire)

OP-87191: 3m, OP-87192: 5m, OP-87193: 10m

When the CN3 port on MR-J3 Series servo amplifier is connected to VT3, please use the following

wiring diagram.

Connection with VT3 Handy Series

For the use of unit connecting cable (OP-87191/87192/87193), please always read

"Precautions on Connection", on Page A-13.


(1) Cable - - Cables (10BASE-T cable etc.) compliant with EIA568


(3) Distributor BMJ-8 Hachiko Electric Without terminator

Be sure to connect VT3 at the termination.


A terminator 150W (1/4W) needs to be connected for the terminal distributor. If

commuincation is unstable, remove the teminator.

Max. trunk line length (total for (1)) is 15m.

Point

VT3 (CN1) Servo amplifier

(CN3)

Servo amplifier

(CN3)

*2

Pink (dot: red 1)

Pink (dot: red 2)

Pink (dot: red 3)

*1 Set the terminator to OFF.

*2 Make short-circuit of RDN-TRE for servo amplifier at one end ofcommunication cable.

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

Shielded Shielded

TMCTMR

RS-485RS-422

1 2 3

ON

OFF

*1

A

B

SG

VT3 (CN1) DistributorServo amplifier

(CN3 )

SDP

RDPSDN

RDN

LG

LG

Terminal resistor(1501/4W)

Terminal resistor(1501/4W)

*2

*1 Set the terminator to OFF.*2 The Inverter at communication cable end should be equipped with a

terminal resistor

AB

SG

Pink (dot: red 1)

Pink (dot: red 2)

Pink (dot: red 3)

5

34

6

1

7

Reference

CN3 CN3 CN3

Distributor

(1) (1)

(3) (3) (3)

(2)

Distributor

(1)

(2)

Distributor

(2)

VT3 Series

N-48

Converter

Point

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The following describes wiring of connector cables.

The wiring diagram in this manual may be different from that recommended by Yaskawa Electric. But it can still be

used for proper operation of the system.

Wiring diagram W40 (RS-422A: 4-wire)

Wiring diagram W41 (RS-422A: 4-wire)

When the CN3 port on MR-J3 Series servo amplifier is connected to VT3, please use the following

wiring diagram.

Connection to VT3-W4TA/W4MA/W4GA





Be sure to connect VT3 at the termination.


A terminator 150W (1/4W) needs to be connected for the terminal distributor. If

commuincation is unstable, remove the teminator.

Max. trunk line length (total for (1)) is 15m.

VT3-W4T/W4M/W4G

PORT2(terminal block)Servo amplifier

(CN3)

Servo amplifier

(CN3)

*2

*1

*1 RDN-TRE is short-circuited on the servo amplifier at the end of communication line.

*2 Set the terminator switch (TERM.) of VT3 to OFF.

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

Shielded ShieldedTXDA

TXDB

RXDA

RXDB

SG

RTSA

RTSB

CTSA

CTSB

VT3-W4T/W4M/W4G

PORT2(terminal block) DistributorServo amplifier

(CN3)

SDP

RDP

SDN

RDN

LG

LG

Terminator

(1501/4W)

Terminator

(1501/4W)

*2*1

*1 Set the terminator switch (TERM.) of VT3 to OFF.

*2Add a terminator (1501/4W) to the inverter at the end of the communication line.

5

3

4

6

1

7

TXDA

TXDB

RXDA

RXDB

SG

RTSA

RTSB

CTSA

CTSB

Reference

CN3 CN3 CN3

distributor

(1) (1)

(3) (3) (3)

(2)

distributor

(1)

(2)

distributor

(2)

VT3 Series

Point

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Wiring diagram R1 (RS-485: 4-wire)

Wiring diagram R2 (RS-422A: 4-wire)

The following diagram shall be referenced when CN3 ports of MR-J3 series servo amplifiers are

connected to VT3.

Connection to VT3-V7R

When using the connecting cable of the unit (VT-C5K1/C5K2/C5R1/C5R2/C15R2/C5A/C5F/OP-

75039), be sure to read "Connection Precautions", page A-13.





Be sure to configure VT3 at the termination.

Cut down the branch line (cable of (2)) as short as possible. Add terminator 150W (1/4W) at the terminal distributor. If commuincation is unstable,

remove the teminator.

The maximum length of trunk line (total of (1)) is 15m.

Point

VT3-V7R

(CN2)

Servo amplifier

(CN3)

Servo amplifier

(CN3)

*2

7

8

9

Gray/black

White/black

Light blue


*2 Make short-circuit of RDN-TRE for servo amplifier at one end

of communication cable.

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

SD

SDP

RDP

SDN

RDN

TRE

LG

LG

Shielded Shielded

TMC TMR

RS-485RS-422A

1 2 3

ON

OFF

*1

A

B

SG

VT3-V7R

(CN2) Distributor

Servo amplifier

(CN3)

SDP

RDP

SDN

RDN

LG

LG

Terminator

(1501/4W)

Terminator

(1501/4W)

*2*1


*2 Add terminal resistance into inverters at one end of communication cable.

(1501/4W)

7

8

9

A

B

SG

Gray/black

White/black

Light blue

5

3

4

6

1

7

Reference

CN3 CN3 CN3

Distributor

(1) (1)

(3) (3) (3)

(2)

Distributor

(1)

(2)

Distributor

(2)

VT3 Series

Point
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The following describes the settings of the Link Unit matched to the default communications conditions.

Communication settings of MR-J2S

For the setting methods, refer to operating instructions of various equipment.

*1 Be sure to set PRM16 within the range of 1100 to 1103.Communication with V32 is impossible in the case of settingsother than this range.

Communication settings of MR-J3

For the setting methods, refer to operating instructions of various devices.

*1 Be sure to set PC21 as either one of 0100, 0110, 0120, 0130 and 0140. Communication with V32 is impossible in thecase of settings other than this range.

Unit Settings

Be sure to turn power on again after the settings of parameters. Otherwise, communication is

impossible in the case of any change of communication-related parameters.

Item Parameter No. Setting Range Default

Communication station

No.PRM15 0 to 31 0

Communication speed,

communication

selection,communication

response delay

PRM16

1100 :9600bit/s, RS-422, Enabled1101 :19200bit/s, RS-422, Enabled

1102 :38400bit/s, RS-422, Enabled1103 :57600bit/s, RS-422, Enabled

0000*1

Item Parameter No. Setting Range Default

Communication station

No.PC20 0 to 31 0

Baud rate,

communication

response delay

PC21

0100 :9600bit/s, Enabled0110 :19200bit/s, Enabled0120 :38400bit/s, Enabled0130 :57600bit/s, Enabled0140 :115200bit/s, Enabled

0000*1

Point

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Communication Conditions Setting Ranges and Defaults

MELSERVO series

*1 Be sure to use I/F level converter(N-48) when RS-232C is selected.*2 Serial I/F of servo amplifier is RS-422A. Communication through equivalent RS-485 is made possible by means of

wiring.*3 Dont select when MR-J2S A series are connected.

Available devices

The following describes available devices and device range of various servo amplifiers.

MR-J2S series

For the details of devices, refer to operating instructions of various equipment.

*1 Write special devices.*2 Please use alarms in the following device ranges. Some errors may occur in VT3 if devices other than this range are

used.

Communication Conditions and Available Devices

Item Setting Range Default

PLC I/F(Port no.) RS-232C(PORT2,PORT3)*1, RS-485(PORT4)*2 RS-485(PORT4)

Communication protocols Start/stop synchro-half duplex mode(ASCII format) --

Baud rate 9600,19200,38400,57600,115200*3 bit/s 9600 bit/s

Data bit 8 bits 8 bits

Stop bit 1 bit 1 bit

Parity Even Even

Flow Control ER control ER control

CheckSum -- --

CR -- --

LF -- --

Type Device Name Device Range

Bit Devices Special functions*1 SP0 to SP6

Word Devices

Status ST00 to ST16

Parameter(RAM) PRM00 to PRM90

Parameter(EEP-ROM) PRM00 to PRM90

Alarm AL000 to AL235*2

Input Status DI0 to DI2

Output Status DO0 to DO1

Device No. Function

AL000 Current alarm No.

AL001 Current detailed alarm data

AL011 to AL025 Details in the case of occurrence of alarm

AL200 to AL205 Log alarm No.

AL210 to AL215 Time of occurrence of log alarm

AL230 to AL235 Detailed data of log alarm

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MR-J3 series

For the details of devices, see the manuals.

*1 Write special devices.*2 Please use alarms in the following device ranges. Some errors may occur in VT3 if devices other than this range are

used.

Specifying Devices

Device type : specify in device range. Device No. : specify in device range.

Station No. : specify in the range of 0-31.

PLC type : specify PLC-A/PLC-B when MultiTalk function is used. Not described when MultiTalk function isn't used.

Type Device Name Device Range

Bit Devices Special functions*1 SP0 to SP6

Word Devices

Status ST00 to ST16Basic setting parameters(RAM) PA01 to PA19

Gains filter parameters(RAM) PB01 to PB45

Extended setting parameters(RAM) PC01 to PC50

I/O setting parameters(RAM) PD01 to PD30

Basic setting parameters(EEP-ROM) PA01 to PA19

Gains filter parameters(EEP-ROM) PB01 to PB45

Extended setting parameters(EEP-ROM) PC01 to PC50

I/O setting parameters(EEP-ROM) PD01 to PD30

Alarm AL000 to AL235*2

Input Status DI0 to DI2

Output Status DO0 to DO1

Device No. Function

AL000 Current alarm No.

AL001 Current detailed alarm data

AL011 to AL025 Details in the case of occurrence of alarm

AL200 to AL205 Log alarm No.

AL210 to AL215 Time of occurrence of log alarm

AL230 to AL235 Detailed data of log alarm

ST12_05_ADevice No.

PLC typeDevice type Station No.

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When a communication error occurs, it will be displayed on the left bottom on the screen of the VT3 main unit.

The error messages are shown as follows.

* "(++)" indicates the station No. for which an error has occurred. When MultiTalk function is used, in order to determine the connected equipment on which an error occurs, "A:" or "B:"

will be added in front of the above error messages.

List of Communication Errors

Display message Causes How to handle

COM ERROR[ERR*(++)]

The device that is set is outside the range of thedevice setting range. Please set it again within the device

setting range.A nonexistent device has been set.

[*]: Error code of Servo amplifierFor the error code[*], see "ConnectedServo amplifier User's Manual".

COM ERROR[Timeout(++)]

Cable is not connected correctly.Please check again whether the cable isconnected correctly.

Power of the Servo amplifier is OFF. Turn the Servo amplifier ON.

The Servo amplifier side is in error or fault status.Please clear the error or fault on theServo amplifier side.

Communication setting error.Keep the communication settingsconsistent between Servo amplifier andVT3.

Affected by noise.Verify whether there is a noise source. Ifthere is a noise source, then it must beseparated from the main unit.

COM ERROR[SUM(++)]

Checksum is not correct. The calculation method forchecksum is wrong.

Please check the checksum calculationmethod.

Connection status of the connection cables is notgood.

Verify whether there is wire break or badcontact.



Parity Error

A parity error occurred during communicating with

Servo amplifier. Verify whether there is wire break or badcontact.Connection status of the connection cables is not good.



Over Run Error

The receive buffer of VT3 overrun.Please decrease the communicationspeed (baud rate).

Connection status of the connection cables is notgood. Communication setting error.

Verify whether there is wire break or badcontact. Keep the communication settingsconsistent between Servo amplifier andVT3.

Affected by noise. Verify whether there is a noise source. Ifthere is a noise source, then it must beseparated from the main unit.

Framing Error

The stop bit cannot be detected during communicatingwith Servo amplifier. Verify whether there is wire break or bad

contact.Connection status of the connection cables is not good.

Communication protocol setting error.Keep the communication protocolconsistent between Servo amplifier andVT3.


COM ERROR[RecvData(++)]

Multiple communication errors occurred.Please refer to the handling methodsmentioned above.

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26-11 Connection with Converters

When external equipments are connected to VT3 by 1:N in the RS-485, they're generally connected to PORT4. But,

when PORT4 is used for Megabyte link or KL communication, serial I/F level converters are used to connect external

equipments to PORT2/PORT3 by 1:N.

When external equipments are connected to VT3 series (by 1:N)

Wiring diagram 1 (OP-24027)

Connection Methods

Connection of VT3 to Converters

When the connection cable of the unit (VT-C5K1/C5K2/C5R1/C5R2/C15R2/C5A/C5F/OP-75039)

is used for connection, please read "Connection Precautions", page A-13

Communications cable KPEV-SB (1P) lead

Communications cable length 1,000m or less

Serial I/F

level converter

N-48

VT3 Shielded

VT3(PORT3): Wiring diagram2

VT3-V6H(G)/Q5H(G): Wiring diagramH20


VT3-V7R:Wiring diagramR1

External equipment VT No 1(terminator ON)

External equipmentVT No 2

External equipmentVT No 7

External equipment VT No 31(terminator ON)

Point

(19)

(20)

(20)

(10)

(10)

(11)

(11)

(1)

(1)(2)

(9)

(12)

Converter (9-pin)

2

3

7

5

4

Red

Red/white

black

Green/white

Green

TXD

RXD

GND

CTS

RTS

RD(RXD)

SD(TXD)

GND(SG)

RS(RTS)

CS(CTS)

2

3

5

7

8D-Sub9pin

Connectors

Female mould

Front

(5)

(1)

(9)

(6)

VT3 PORT2 (20-pin)

Front view

Rear view

20-pin connector

* The signal name at converter side is the signal name of output target.

*
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8/9/2019 VT3_PLC_UM_9

16/16

26-11 Connection with Converters

EXTERNAL

EQUIPMENTCONNECTION

26

Wiring diagram 2 (OP-26486+OP-24025(5m), OP-24045(1m))

Wiring diagram H20 (RS-232C)OP-87191: 3m, OP-87192: 5m, OP-87193: 10m

Wiring diagram R1 (RS-232C:VT-C5R1)

For the pin No. of connectors at one side of VT3/DT series, refer to the chapters in the Appendix.

Converter (9-pin)

2

3

5

7

8

TXD

RXD

GND

CTS

RTS

RD(RXD)

SD(TXD)

GND(SG)

RS(RTS)

CS(CTS)

2

3

5

7

8D-Sub9 pin

Connectors

Female mould

Front view

(5)

(1)

(9)

(6)

Front view

(5)

(1)

(9)

(6)

VT3PORT3(9-pin)

D-Sub9 pin

Connectors

Female mould

* The signal name at converter side is the signal name of output target.

*

VT3 (CN2A)

Shielded

Converter (9-Pin)

2

3

5

7

8

RD(RXD)

SD(TXD)

GND(SG)

RS(RTS)

CS(CTS)

Orange (dot: black 1

Orange (dot: black 3Orange (no dot)

Orange (dot: red 1

Orange (dot: red 3

TXD

RXD

SG

RTS

CTS

TMCTMR

RS-485RS-422A

1 2 3

ON

OFF

* Signal name of the inverter is changed to signal name of

the output destination.

VT3-V7R (CN2)

Shielded

Converter (9-pin)

1

29

5

4

3

2

35

7

8

RD(RXD)

SD(TXD)GND(SG)

RS(RTS)

CS(CTS)

Red

Red/white

Light blue

Yellow

Green/white

Green

TXD

RXDSG

DSR

CTS

RTS

TMC TMR

RS-485RS-422A

1 2 3

ON

OFF

Reference

vt3_plc_um_9

Documents