Private Protocol

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Private Protocol

overview

In this article, we will explain how to connect to devices using Mitsubishi Electric's private protocol.

 

 

Compatible models

List of compatible connection devices.

 

Series name

CPU unit type name

iQ-R series

R04CPU, R08CPU, R16CPU, R32CPU, R120CPU, R08PCPU, R16PCPU, R32PCPU, R120PCPU

Q Series

Q00JCPU, Q00CPU, Q01CPU, Q02(H)CPU, Q06HCPU, Q12HCPU, Q25HCPU, Q02PHCPU, Q06PHCPU, Q12PHCPU, Q25PHCPU, Q12PRHCPU , Q25PRHCPU, Q00UJCPU, Q00UCPU, Q01UCPU, Q02UCPU, Q03UDCPU, Q03UDECPU, Q04UDHCPU, Q04UDEHCPU, Q06UDHCPU, Q06UDEHC PU, Q10UDHCPU, Q10UDEHCPU, Q13UDHCPU, Q13UDEHCPU, Q20UDHCPU, Q20UDEHCPU, Q26UDHCPU, Q26UDEHCPU, Q50UDEHCPU, Q10 0UDEHCPU, Q03UDVCPU, Q04UDVCPU, Q06UDVCPU, Q13UDVCPU, Q26UDVCPU, Q04UDPVCPU, Q06UDPVCPU, Q13UDPVCPU, Q26UDPVCPU

Q series (A mode)

Q02CPU-A, Q02HCPU-A, Q06HCPU-A

QnA Series

Q2ACPU(-S1), Q2ASCPU(-S1), Q3ACPU, Q4ACPU, Q2ASHCPU(-S1), Q4ARCPU

A-Series

A0J2HCPU, A1SCPU, A1SCPUC24-R2, A1SHCPU(-S1), A1SJCPU, A1SJHCPU, A1 NCPU, A2CCPU, A2CJCPU, A2CCPUC24(-PRF), A2NCPU(-S1), A2SCPU, A2 SHCPU, A3NCPU, A2ACPU(-S1), A2ACPUP21/R21(-S1), A3ACPU, A3ACPUP21/ R21, A1FXCPU, A2UCPU(-S1), A3UCPU, A4UCPU, A2USCPU(-S1), A2USHCPU-S1

FX Series

FX0, FX0S, FX0N, FX1, FX1S, FX1N, FX1NC, FX2, FX2C, FX2N, FX2NC, FX3UC, FX3U

L-Series

L02CPU, L02CPU-P, L02SCPU, L02SCPU-P, L06CPU, L06CPU-P, L26CPU, L26CPU-P, L26CPU-BT, L26CPU-PBT

Motion Controller

A273UHCPU(-S3), A173UHCPU(-S1), A171SHCPU, A172SHCPU

 

attention

The motion controller can only be connected as a compatible A-series CPU.

 

hint

We recommend using the "public protocol" when connecting via RS-232C or Ethernet.

 

hint

Normally, when communicating with multiple PLCs, connection processing is performed for each PLC.

Therefore, if the COM port number or Ethernet port number is duplicated between PLCs, the connection process will be successful with only one PLC, and an error will occur with the other PLCs.

However, Mitsubishi's private protocol is the only exception that allows the settings to be duplicated on multiple PLCs.

If you want to overlap, please make sure that the communication settings (baud rate, parity, etc.) of each PLC are all the same.

 

Compatible PC communication interface board

Communication method

Interface Board Name

MELSECNET(II) Board

A70BD-J71AP23, A98BD-J71AP23

MELSECNET/10 board

A70BD-J71QLP23, A70BD-J71QBR13, A98BD-J71QLP23, A98BD-J71QBR13

MELSECNET/H Board

Q80BD-J71LP21-25, Q80BD-J71BR11

CC-Link Board

A80BD-J61BT13

CC-Link IE Controller Network Board

Q80BD-J71GP21-SX, Q80BD-J71GP21S-SX, Q81BD-J71GP21-SX, Q81BD-J71GP21S-SX

CC-Link IE Field Network Board

Q80BD-J71GF11-T2, Q81BD-J71GF11-T2

MELSEC-CPU Board

A80BD-A2USH-S1

Sequencer bus connection board

A70BD-AF

SSCNET Board

A30BD-PCF, A30CD-PCF

 

 

attention

You must first install the driver that is compatible with the version of Windows you are using.

This product does not come with a driver. Please purchase one separately from Mitsubishi Electric.

 

 

Communication possible MELSEC units

Communication method

Unit Model Name

CPU unit direct connection (RS422)

All supported CPU units

Directly connected to CPU unit (USB)

All supported CPU units

Remote I/O unit

AJ72P25/LP25/QLP25, AJ72R25/BR15/QBR15, AJ72T25B, A1SJ72T25B, QJ72LP25(-25)/BR15(-25)

Computer Link Unit

AJ71C24/UC24, A1SJ71UC24

Serial Communication Unit

AJ71QC24(N), A1SJ71QC24(N), QJ71C24, QJ71CMO

CC-Link unit

AJ65BT-G4, AJ65BT-G4-S3

CC-Link IE Controller Network

QJ71GP21-SX, QJ71GP21S-SX, RJ71GP21-SX

Ethernet unit

AJ71E71, A1SJ71E71, AJ71QE71, A1SJ71QE71, QJ71E71, QJ71E24, QJ71E71-100

MELSECNET(II) unit

AJ71AP21, AJ71AR21, AJ71P25, AJ72R25, A1SJ71AP21, A1SJ71AR21

MELSECNET/10 units

AJ71LP21, AJ71LP21G, AJ71BR11, AJ71LR21, AJ72LP25, AJ72LP25G, AJ72BR15, AJ72LR25, A1SJ71LP21, A1SJ71BR11, A1SJ72QLP25, A1SJ72QBR 15, AJ71QLP21, AJ71QLP21S, AJ71QLP21G, AJ71QBR11, J72QLP25, AJ7225G, AJ72QBR15, A1SJ71QLP21, A1SJ71QLP21S, A1SJ71QBR11, QJ72BT15

MELSECNET/H unit

QJ71LP21-25, QJ71BR11, QJ72LP25-25, QJ72BR15-25

 

 

Drivers using private protocols

type

Communication Method

Connection Unit

Q Series Q Mode

CPU port direct connection

(none)

Q series A mode

CPU port direct connection

(none)

QnA Series

CPU port direct connection

(none)

A-Series

CPU port direct connection

(none)

FX Series

CPU port direct connection

(none)

Q Series Q Mode

CPU Direct port connection (USB

(none)

QnA Series

MELSECNET(II)

Equivalent to A70BD-J71AP23

A-Series

MELSECNET(II)

Equivalent to A70BD-J71AP23

Q Series Q Mode

MELSECNET/10

Equivalent to A70BD-J71QLP23

QnA Series

MELSECNET/10

Equivalent to A70BD-J71QLP23

A-Series

MELSECNET/10

Equivalent to A70BD-J71QLP23

Q Series Q Mode

MELSECNET/H

Equivalent to Q80BD-J71LP21-25

QnA Series

MELSECNET/H

Equivalent to Q80BD-J71LP21-25

A-Series

MELSECNET/H

Equivalent to Q80BD-J71LP21-25

Q Series Q Mode

CC-Link

Equivalent to A80BD-J61BT13

QnA Series

CC-Link

Equivalent to A80BD-J61BT13

A-Series

CC-Link

Equivalent to A80BD-J61BT13

Q Series Q Mode

G4 Unit

Equivalent to AJ65BT-G4-S3

QnA Series

G4 Unit

Equivalent to AJ65BT-G4

A-Series

G4 Unit

Equivalent to AJ65BT-G4

A-Series

CPU Board

Equivalent to A80BD-A2USH-S1

Motion CPU

SSCNET

A30BD-PCF equivalent

QnA Series

AF Board

Equivalent to A70BD-AF

A-Series

AF Board

Equivalent to A70BD-AF

QnA Series

TEL Unit

Q6TEL

A-Series

TEL Unit

A6TEL/Q6TEL

Q Series Q Mode

General purpose

(Not normally used)

QnA Series

General purpose

(Not normally used)

A-Series

General purpose

(Not normally used)

FX Series

General purpose

(Not normally used)

 

hint

For a Q Series A Mode CPU, if you are using a connection method that does not include a Q Series A Mode CPU in the type list, please select an A Series CPU.

 

hint

About PLCs with "general purpose" communication methods

If the number of compatible devices is increased during a minor version upgrade, it may be possible to connect by specifying parameters on a general-purpose screen, but this is not normally used.

 

Settings Dialog Details (Private Protocol)

Common Dialogue

 

The following dialogs are common to all private protocols. Depending on the model of the PLC you are connecting to, you may not be able to enter any items that do not need to be set or that cannot be set.

 

Communication port settings

c_plc_0167

 

 

•Transmission speed
Specifies the transmission speed (communication speed) between the PLC and the computer.

 

•Byte Size
Specifies the byte size.

 

•Stop bits
Specifies the number of stop bits.

 

•parity
Specifies the parity type.

 

•Flow Control
Specifies the control settings for the signal line.

Advanced Settings

c_plc_0168

 

 

•Connection Unit
Normally, this cannot be set (valid only for general purpose).

 

•Message format
Specifies the format of the data to be communicated.

 

•Communication Protocol
Specifies the format of the communication protocol.

 

•CPU Watchdog Timer
Set the CPU monitoring timer (unit is x 250 milliseconds).

 

•timeout
Specifies the timeout period (in milliseconds).

 

•Sum Check
Specifies whether to perform a sum check.