2 SYSTEM CONFIGURATION AND AVAILABLE FUNCTIONS

MELSEC-Q

1 The following functions are available when communicating with the

MELSECNET/H remote I/O station using the MC protocol.

Available function

Function

 

 

Batch read and batch write

Device memory read/write

Random read, test (random write)

Monitor data registration, monitoring

 

 

Batch read of multiple blocks, batch write of multiple blocks

Buffer memory read/write

Reading/writing from/to the buffer memory of the Q series C24

Reading/writing buffer memory of an

Reading/writing from/to the buffer memory of the specified

intelligent function module

intelligent function module

The following devices of a MELSECNET/H remote I/O station can be accessed by the device memory read/write function. Note that the accessible devices and the ranges vary depending on the type of frames used for the data communication.

See the Reference Manual for a detailed explanation.

Device name

Device symbol

Device name

Device symbol

Special relay

SM

Link relay

B

Special register

SD

Data register

D

Input relay

X

Link register

W

Output relay

Y

Link special relay

SB

Internal relay

M

Link special register

SW

REMARK

It is only possible to read/write from/to the buffer memory of an intelligent function module for the MELSECNET/10 remote I/O station compatible with the QnA/A series.

2 PLC CPU monitoring can be registered using the MC protocol or GX Configurator-SC.

The dedicated instruction CSET cannot be used for registration.

The device to be monitored can be registered within the device range of the MELECNET/H remote I/O station.

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