Appendix 9.3 when sending on-demand data, Melsec-q, Appendix appendix 9.3 when sending on-demand data – MITSUBISHI ELECTRIC QJ71C24N User Manual
Page 329: 1) program conditions
App. - 35 App. - 35
MELSEC-Q
APPENDIX
Appendix 9.3 When sending on-demand data
The following program example sends on-demand data using the REMFR/REMTO
instruction and I/O signals.
For the on-demand function, refer to Section 3.11 of the Reference Manual and
Chapter 10 of the User's Manual (Application).
(1) Program conditions
The following program sends on-demand data from the CH1 side when the
transmission command (X1022) turns ON.
(a) Devices used
:
• Transmission command ............................................................ X1022
• Transmission command pulse signal........................................ M10
• On-demand function designation command............................. M11
• On-demand data transmission flag ........................................... M12
• On-demand execution result acquisition command ................. M13
• LED ON status acquisition command ....................................... M14
• Completion device for REMFR/REMTO instruction ................. M100 to 107
• Normal/abnormal completion flag for REMFR/REMTO
instruction................................................................................... M200 to 204
• Normal/abnormal completion of on-demand data
transmission............................................................................... M300, M301
• Transmission data...................................................................... D0, D1
• Buffer memory head address designation for on-demand
function....................................................................................... D2
• Data length designation for on-demand function...................... D3
• On-demand execution result ..................................................... D8
• LED ON status and communication error status on CH1 side
................................................................................................... D9
(b) Intelligent function module switch settings (Refer to Section 4.5.2)
Bit
Switch No.
Position
Designated value
Description
Setting
value
b0
OFF
Operation setting
Independent
b1
ON
Data bit
8 bits
b2
OFF
Parity bit
No
b3
OFF
Even/odd parity
Odd
b4
OFF
Stop bit
1 bit
b5
ON
Sum check code
Yes
b6
ON
Write during RUN
Enabled
b7
ON
Transmission
setting
Setting modifications
Enabled
Switch 1
b8 to b15
—
Communication rate setting
19200bps
07E2
H
Switch 2
—
Communication protocol setting
MC protocol format 1
0001
H
Switch 5
—
Station number setting
Station 0
0000
H
(c) Buffer memory settings used in this example
Address Decimal (Hexadecimal)
CH1
Name
Setting
value
150 (96
H
)
Word/byte units designation
Word units
160 (A0
H
)
Buffer memory head address designation for on-demand function designation
0C00
H
161 (A1
H
)
Data length designation for on-demand function designation
2
513 (201
H
)
LED ON status and communication error status on CH1 side
—
598 (256
H
)
On-demand execution result
—