FP
Σ
Communication Function 2 General-purpose Serial Communication
9 - 8
9.2
Overview of Communication with External Devices
This section explains about the communication “data transmission and data reception”
with external devices.
Communication with external device is handled through the data register.
9.2.1
Data Transmission to External Device
Overview of data transmission
Data to be output is stored in the data register used as the transmission buffer (DT), and
when the
F159 (MTRN)
instruction is executed, the data is output from the COM. port.
FP
Σ
Data register (DT)
Data writing
Received data
Device with
RS232C port
Transmitted data
Data transmission using
F159 (MTRN)
instruction
Figure 168: FP
Σ
Overview of data transmission
Data table for transmission (transmission buffer)
Data table before transmission
When transmission begins: K8
When transmission ends: K0
Data is transmitted in order
from the low order byte.
DT101 H42(B)
DT102 H44(D)
DT103 H46(F)
DT104 H48(H)
DT100
K8
H41(A)
H43(C)
H45(E)
H47(G)
Figure 169: FP
Σ
Data table for transmission (transmission buffer)
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...