Mitsubishi Electronics AJ65bt-r2 ユーザーズマニュアル

9 - 1

MELSEC-A

9   PROGRAM EXAMPLES

   9

9. PROGRAM EXAMPLES

Examples of R2 programs are given in this chapter.

9.1 Conditions for program examples

The program examples in this chapter have been created with the following conditions.
Refer to section 9.2.4 (1) for the conditions of the program examples when using three
R2 modules.

(1)   System configuration

CPU

X/Y00 to
 X/Y1F

AX42

X20 to
 X5F

AY42

Y60 to
 Y9F

Power 
supply

Master
station

R2 (Station No. 1)

Transmission data: ABCDEF

External 
device

Reception data: "Random data + CR (0D

H

)" or 

                          "Random data + LF (0A

H

)"  

*1

CC-Link dedicated cable

RS-232-C cable

*1 In the program example shown in this chapter, the reception completion is

detected by receiving the reception end frame (CR(0D

H

) or LF(0A

H

)).

To detect a reception completion by designating the number of reception
data, the reception end data size designation (R2 111

H

) setting is required.

Refer to section 6.2 for details.

(2)   Relation of programmable controller CPU, master station and R2

The contents of RXn0 to RX(n+1)F are read into X100 to X11F, and the contents
of Y100 to Y11F are written into RYn0 to RY(n+1)F.

X100 to X10F
X110 to X11F

Y100 to Y10F
Y110 to Y11F

RXn0       to RXnF
RX(n+1)0 to RX(n+1)F

E0

H

E1

H

RYn0       to RYnF
RY(n+1)0 to RY(n+1)F

160

H

161

H

R2

RXn0       to RXnF
RX(n+1)0 to RX(n+1)F

RYn0       to RYnF
RY(n+1)0 to RY(n+1)F

Programmable Controller CPU

Master station

Device Y

Device X

Address Remote input (RX)

Remote output (RY)

Remote input (RX)

Remote output (RY)

(3)   Master station buffer memory settings (buffer memory size)

Transmission

buffer

Reception buffer

Automatic

update buffer

When using buffer memory automatic
update function

0

H

0

H

600

H

When using transmission/reception
buffer

200

H

200

H

0

H