APPENDIX

Appendix 9.7 When sending data using user frames

MELSEC-Q

The following program example sends data by the user frames using the REMFR/REMTO instruction and I/O signals.

Refer to Section 11.4 of the User's Manual (Application) for the transmission using the user frames.

(1) Program conditions

The following program sends data using the user frames from the CH1 side when the transmission signal (X1026) turns ON.

(a) Devices used:

• Transmission command .........................................................

X1026

• Transmission command pulse signal.....................................

M10

• Transmission user frame designation command...................

M11

• Transmission result acquisition command.............................

M12

• Completion device for REMFR/REMTO instruction ..............

M100 to 105

• Normal/abnormal completion flag for REMFR/REMTO

 

instruction................................................................................

M200 to 203

• Normal/abnormal completion of transmission........................

M300, M301

• Transmission data count ........................................................

D0

• Transmission data...................................................................

D1, D2

• CR/LF output designation.......................................................

D5

• Output head pointer designation ............................................

D6

• Output count designation........................................................

D7

• Output frame No. designation ................................................

D8 to D12

• Data transmission result .........................................................

D20

(b) Intelligent function module switch settings (Refer to Section 4.5.2)

Switch No.

 

Bit

 

Description

 

Setting

Position

Designated value

 

 

value

 

 

 

 

 

 

 

b0

OFF

 

Operation setting

 

Independent

 

 

b1

ON

 

Data bit

 

8 bits

 

 

b2

OFF

 

Parity bit

 

No

 

 

b3

OFF

Transmission

Even/odd parity

 

Odd

 

Switch 1

b4

OFF

setting

Stop bit

 

1 bit

07C2H

 

b5

OFF

 

Sum check code

 

No

 

 

b6

ON

 

Write during RUN

 

Enabled

 

 

b7

ON

 

Setting modifications

 

Enabled

 

 

b8 to b15

—

Communication rate setting

 

19200bps

 

Switch 2

 

—

Communication protocol setting

 

Non-procedure protocol

0006H

Switch 5

 

—

Station number setting

 

 

Station 0

0000H

App. - 43

App. - 43