App. - 44 App. - 44
MELSEC-Q
APPENDIXES
Appendix 9.5 When sending data using nonprocedural or bidirectional protocol
The following program example sends data under the nonprocedural protocol (or
bidirectional protocol) using the REMFR/REMTO instruction and I/O signals.
Refer to Chapter 6 for the communication using the nonprocedural protocol, and to
Chapter 7 for the communication using the bidirectional protocol.
(1) Program conditions
The following program sends data from the CH1 side when the transmission
signal (X1024) turns ON.
(a) Devices used
:
• Transmission command ......................................................... X1024
• Transmission command pulse signal ..................................... M10
• Transmission result acquisition command ............................. M11
• Completion device for REMFR/REMTO instruction ............... M100 to 103
• Normal/abnormal completion flag for REMFR/REMTO
instruction................................................................................ M200 to 202
• Normal/abnormal completion of transmission........................ M300, M301
• Transmission data count......................................................... D10
• Transmission data (5 words) .................................................. D11 to D15
• Data transmission result ......................................................... D20
(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
OFF
Data bit
7 bits
b2 OFF
Parity
bit
No
b3 OFF
Even/odd
parity
Odd
b4
OFF
Stop bit
1 bit
b5
OFF
Sum check code
No
b6
ON
Write during RUN
Enabled
b7 ON
Transmission
setting
Setting modifications
Enabled
Switch 1
b8 to b15
—
Communication rate setting
19200bps
07C0
H
Switch 2
—
Communication protocol setting
Non-procedure protocol
or
bidirectional protocol
0006
H
or
0007
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
162 (A2
H
)
Transmission buffer memory head address designation
0400
H
163 (A3
H
)
Transmission buffer memory length designation
0200
H
599 (257
H
)
Data transmission result
—
Содержание MELSEC QJ71C24
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Страница 177: ...6 33 6 33 MELSEC Q 6 DATA COMMUNICATION USING THE NON PROCEDURE PROTOCOL MEMO ...
Страница 397: ...App 24 App 24 MELSEC Q APPENDIXES Connection example 3 Connection example 4 ...
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