FP
Σ
Communication Function 1 Computer Link
8 - 18
8.3
Computer Link (1:N communication)
This section explains about the 1:N communication of computer link.
8.3.1
Overview of 1:N Communication
For a 1:N computer link, the computer and the FP
Σ
are connected through a
commercially available RS232C-RS485 conversion adapter, and the respective PLCs
are wired using an RS485 cable.
Communication is carried out by the command specifying the unit number being sent
from the computer side, and the PLC with that unit number sending a response back
to the computer.
RS232C
RS485
Computer
Commercially
available
conversion
adapter
Unit No.1
Unit No.2
Unit No.3
Unit No.4
The unit number for the PLC to which the command
is being sent is included in the command message.
The unit number of the PLC sending a response is
included in the response message.
Figure 156: FP
Σ
Overview of compute link function (1:N communication)
If the FP
Σ
is used in combination with a communication cassette (the 1-channel
RS485 type), no C-NET adapter is necessary on the PLC side.
Tip
8.3.2
Communication Cassette Used for 1:N Communication
The following types of communication cassettes can be used for 1:N communication
with a computer link.
Name
Description
Part No.
FP
Σ
Communication cassette
1-channel RS485 type
This communication cassette is a 1-channel unit with a
two-wire RS485 port. It supports 1:N computer links (C-
NET), general-purpose serial communication, and a PLC
link.
FPG-COM3
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...