Arrangement And Contents Of The Receive Area And The Receive Data - Mitsubishi Electric QJ71C24N User Manual

7 DATA COMMUNICATION USING THE BIDIRECTIONAL PROTOCOL

7.1.2 Arrangement and contents of the receive area and the receive data

CH1
address
Buffer memory
600
H
Receive data count
601
H
to Receive data
7FF
H
(Default)
7 - 4
This section shows the arrangement and contents of the receive area and the receive
data for performing data reception using the bidirectional protocol.
(1) Receive area
The receive area is a memory that stores the received data length (receive data
count) and data area received from an external device.
The receive area is allocated to addresses 600
BFF (CH2 side) at initial setting.
H
to 7FF
H
• The units of data length (word/byte) is in accordance
with the word/byte units designation in GX Configurator-SC.
• Data length
The contents of data length of the received
message are stored.
• Data area
The contents of the data area of the received
message are stored in ascending address order.
MELSEC-Q
(CH1 side) and A00
H H
7 - 4
to