Melsec-q, Appendix – MITSUBISHI ELECTRIC QJ71C24N User Manual

Page 301

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App. - 7 App. - 7

MELSEC-Q

APPENDIX

Function

Q series C24

QC24N

QC24

UC24

C24-S8

Accessing other stations with link dedicated instructions

(via QC24 (N))

Non procedure protocol

Interrupt processing

(at data reception)

Bidirectional protocol

Communication via public lines using modem function

Communication using the PLC CPU monitoring function

Auto refresh directed to the PLC CPU

DC code control

Transmission control

DTR/DSR signal control

Half-duplex communication control

Mode switching

Setting the same protocol

Independent operation of two

interfaces

Setting different protocols

Linked operation of two interfaces

Registering initial setting values of the buffer memory

Registering user frame

(Flash ROM)

(EEPROM)

1:1, 1:n

Connection forms with external

devices

m:n

I/O signal transmission/receive by multi drop link function

Connection of GX Developer

Communication data monitoring

Registering and monitoring of setting values by the utility package

PLC that can be mounted

QCPU

MELSECNET/H

remote I/O station

QnACPU

MELSECNET/10,

Remote I/O station

ACPU

AnACPU

AnUCPU

QnACPU

ACPU

AnACPU

AnUCPU

QnACPU

Data transmission rate (bps)

230400 maximum

(

6)

115200

maximum

19200

maximum

19200

maximum

19200

maximum

: Function exists/possible
: Function exists/possible

(specification is different

depends on the function

version (see Appendix 1)

: No function/impossible

1 Access is possible only within the range of an AnACPU device.

2 A multiple block batch read/write function can be used for the local station QCPU to which the Q series

C24 is mounted and the next CPU module, which will be another station, via MELSECNET/H,

MELSECNET/10.

PLC CPU

Function

QCPU

QnACPU

Q2AS(H)

Q4AR

Multiple block batch read/write

(All allowed)

(9707B or later products)

(All allowed)

This function is added to modules showing 9707B or later in the package indication and the DATE

column of the rating plate.

3 Access to other stations cannot be performed via data link system (MELSECNET(II), MELSECNET/B).

4 Transmission is only possible using the printer function.

5 When the Q series C24 is used, it is possible to read/write a maximum of 960 words (in case of QC24(N), it

is possible to read/write a maximum of 480 words.)

6 230400 bps can be used via CH1 of QJ71C24N (-R2/R4) only.

The maximum transmission speed of QJ71C24 (-R2) is 115200 bps.

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