Mitsubishi Electric Q81BD-J61BT11 User Manual page 207

13 COMMUNICATION BETWEEN THE MASTER STATION AND
INTELLIGENT DEVICE STATION (AJ65BT-R2)
13.4.2 Data transmission
Master station (station No. 0)
Personal computer
User program
mdReceive
mdSend
mdSend
User Program
1) Writes the send data to the transmission area
of the AJ65BT-R2 buffer memory.
2) Turn ON the transmission request signal (RY0).
5) Reads out the transmission normal complete
signal (RX0) and the transmission error
complete signal (RX1).
6) Turns OFF the transmission request signal
(RY0).
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The following illustrates the relation between the intelligent device station's I/O
operations and the user program on the PC and their data transmission. (The shaded
areas indicate the devices that are actually used.)
CC-Link Ver.2 board
Remote inputs (RX)
5)
5)
Remote outputs (RY)
2) 6)
1)
1: When the remote net Ver.2 mode is selected, refer to the figure in Section 4.4.7(1).
When the remote net additional mode is selected, refer to the figure in Section 4.4.7(2).
Intelligent device station (station No. 1)
4)
RX0 (transmission normal complete)
RX0
4) 8)
RX1 (transmission error complete)
RX1
:
3) 7)
RY0 RY0 (transmission request)
:
Buffer memory
200H
201H
to
3FFH
CC-Link Ver.2 Board
3) Turn ON the transmission request signal (RY0) of the
AJ65BT-R2.
4) The AJ65BT-R2 sends data to external equipment, and
if the transmission is normal, it turns ON the
transmission normal complete signal (RX0).
If an error is identified in the transmission, the AJ65BT-
R2 turns ON the transmission error complete signal
(RX1).
7) Turns OFF the transmission request signal (RY0) of the
AJ65BT-R2.
8) The AJ65BT-R2 turns OFF the transmission normal
complete signal (RX0) or transmission error complete
signal (RX1).
MELSEC
:
:
(transmission data size designation area)
(transmission data designation area)
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