Mitsubishi-electric QJ71C24N Manuel d'utilisateur télécharger pdf (Page 35)

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MELSEC-Q

1 OVERVIEW

1.3 About Added/Changed Functions in Function Version B

The table below lists the functions that have been added or changed in the Q series

C24 of function version B.

See Section 2.6 for the function version, serial NO. and software version of products

(CPU module, GX Developer, GX Configurator-SC) related to the Q series C24 which

can use added/changed functions.

See Appendix 1.1 concerning a comparison of functions in the different Q series C24

function versions.

Function

QJ71C24N

(-R2/R4)

QJ71C24

(-R2)

Outline of function Reference section

Simultaneous connection of

GX Developer and GOT

This function allows access to the PLC from a PC with GX Developer and a

GOT connected to two different interfaces of the Q series C24 at the same

time.

Section 1.2 of

User’s Manual

(Basic)

Control of RS and DTR

signal states

This function allows the control of the on or off state of the RS and DTR

signals with the PLC program.

Remark of section

3.2.1

Support for 230,400 bps

This function allows data communication with an external device at a

transmission speed of 230,400 bps.

Data transmission/reception

at low speed

This function allows data communication with an external device at a

transmission speed of 50 bps.

Chapter 4 of

User’s Manual

(Basic)

Clearing reception data by a

dedicated instruction

This function allows clearing reception data using the CSET instruction

during data communication using the non procedure protocol.

It is possible to clear the data even when data is being transmitted.

Chapter 6, Section

9.8 of User’s

Manual (Basic)

Transmission of the PLC

CPU monitoring information

through combined use of the

modem function

When the PLC CPU monitoring function is active, this function sends the

monitoring information of the PLC CPU to the external device through the

modem.

Chapter 2 of

User’s Manual

(Application)

Remote password check

This function allows data communication after the external device

completes the unlock processing of the remote password set at a QCPU. It

is executed when the QCPU is accessed from a remote location using the

modem function of the Q series C24 in the following forms of data

communication:

• Communication using the MC protocol

• Communication using GX Developer

Chapter 3 of

User’s Manual

(Application)

Section 3.18 of

Reference Manual

Automatic initialization for

modem

Initializes the modem automatically when Q Series C24 starts up.

Callback

After line connection from the GX Developer, access to the QCPU from the

GX Developer is made possible through line reconnection from the Q Series

C24 (callback). Transmission costs after line connection from the Q Series

C24 side are borne by the Q Series C24 side.

Chapter 3 of the

User’s Manual

(Application)

Addition of non reception

monitoring time format in

non procedure protocol

This function allows messages to be received in the non reception protocol

by time-out in non reception monitoring time (timer 0) if the received

complete code and received data count have been not determined.

Chapter 6 of

User’s Manual

(Application)

Transmission control

start/end free area

designation

This function allows the designation of the available capacity of the OS area

that notifies the data reception failure at the time of transmission control

(DTR/DSR signal control and DC code control).

Chapter 7 of

User’s Manual

(Application)

Addition of changeable data

to the user frame

(05

, 0B

, 11

, 17

)

Addition of changeable data

to the user frame

(04

, 0A

)

These functions allow the following codes to be registered as the

changeable data of user frames for data communication.

• Horizontal parity code

• Sum check code of two’s-complement number

Chapter 9 of

User’s Manual

(Application)

Adding a reception function

through the use of user

frames

This function allows reception of a message consisting of the head frame

and any data field when receiving data by specifying the head frame.

The data length of the data field can be specified freely for each

combination of user frames for reception set by the user.

(Receiving 1 byte providing ACK/NAK only is also possible by setting the

data length of the data field to “0.”)

Chapter 11 of

User’s Manual

(Application)

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Mitsubishi-electric QJ71C24N Manuel d'utilisateur Page 35

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