FP
Σ
Communication Function 2 General-purpose Serial Communication
9 - 36
When sending data:
Relationship between the various flags “Reception done flag and Transmission done
flag” and the
F159 (MTRN)
instruction
b
a
b
a
<2>
<1>
<2>
<1>
<0>
b
a
<0>
b
a
<0>
d
e
c
<3>
STX
ETX
ETX
STX
a
b
c
d
e
<0>
on
off
on
off
d
e
c
d
e
c
d
e
c
d
e
c
Transmission
Transmission
F159 (MTRN)
instruction
execution
Transmission
done flag
“R9039 or R9049”
Transmission buffer
Number of bytes not
yet transmitted
Duplex transmission
disabled while
F159
(MTRN)
instruction
is being executed
Transmitted data
*
: Transmission point
Figure 199: FP
Σ
Flag operation when sending data (STX and ETX setting)
Start code (STX) and end code (ETX) are automatically added to the data being
transmitted, and the data is transmitted to an external device.
When the
F159 (MTRN)
instruction is executed, the transmission done flag “R9039 or
R9049” go off.
Duplex transmission is disabled while the
F159 (MTRN)
instruction is being executed.
Check the transmission done flag “R9039 or R9049”.
Содержание FP Series
Страница 15: ...FP Functions and Restrictions of the Unit 1 2...
Страница 25: ...FP Specifications and Functions of Control Unit 2 2...
Страница 37: ...FP Expansion 3 2...
Страница 44: ...Chapter 4 I O Allocation 4 1 I O Allocation 4 3...
Страница 45: ...FP I O Allocation 4 2...
Страница 51: ...FP Installation and Wiring 5 2...
Страница 77: ...FP High speed Counter and Pulse Output Functions 6 2...
Страница 133: ...FP High speed Counter and Pulse Output Functions 6 58...
Страница 135: ...FP Communication Cassette 7 2...
Страница 147: ...FP Communication Function 1 Computer Link 8 2...
Страница 169: ...FP Communication Function 2 General purpose Serial Communication 9 2...
Страница 205: ...FP Communication Function 2 General purpose Serial Communication 9 38...
Страница 207: ...FP Communication Function 3 PLC Link Function 10 2...
Страница 232: ...Chapter 11 Other Functions 11 1 Analog Potentiometer 11 3 11 2 Clock Calendar Function 11 4...
Страница 233: ...FP Other Functions 11 2...
Страница 238: ...Chapter 12 Self Diagnostic and Troubleshooting 12 1 Self Diagnostic Function 12 3 12 2 Troubleshooting 12 5...
Страница 239: ...FP Self Diagnostic and Troubleshooting 12 2...
Страница 249: ...FP Self Diagnostic and Troubleshooting 12 12...
Страница 251: ...FP Specifications 13 2...
Страница 323: ...Index FP I 4...
Страница 325: ...FP Record of changes R 2...