G-14
FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (FX
2N
-232IF)
5 Creating Programs
5.1 Outline of Communication between FX PLC and 232IF
5. Creating Programs
This chapter explains how to create programs for non-protocol communication type using the 232IF.
5.1
Outline of Communication between FX PLC and 232IF
An FX PLC and 232IF transfer data between each other through the buffer memory (BFM).
5.1.1
For FROM and TO instructions
5.1.2
For direct specification of buffer memory (U
\G
)
FX
3U
and FX
3UC
PLCs allow not only FROM and TO instructions but also direct specification of the buffer
memory (U
\G
) using the MOV instruction, etc.
Receiving completed
status
Device memory
Data register
D****
Internal relay
M****
FX
2N
/FX
3U
/FX
2NC
/FX
3UC
PLC
FX
2N
-
232IF
Communication equipment
Buffer memory
Communication
format
Sending command
Error reset
Send data
Receive data
TO instruction
TO instruction
FROM instruction
FROM instruction
Printer
Bar code reader
•
•
•
•
•
•
•
•
•
•
•
FX
3U
/FX
3UC
PLC
Device
Direct specification
of buffer memory
FX
2N
- 232IF
Communication equipment
Buffer memory
Arbitrary applied
instruction
Printer
Bar code reader
U \G
Arbitrary applied
instruction
Arbitrary applied
instruction
Arbitrary applied
instruction
Receiving completed
status
Communication
format
Sending command
Error reset
Send data
Receive data
•
•
•
•
•
•
•
Summary of Contents for FX-485ADP
Page 2: ......
Page 120: ...B 2 FX Series PLC User s Manual Data Communication Edition N N Network ...
Page 188: ...C 2 FX Series PLC User s Manual Data Communication Edition Parallel Link ...
Page 244: ...D 2 FX Series PLC User s Manual Data Communication Edition Computer Link ...
Page 344: ...E 2 FX Series PLC User s Manual Data Communication Edition Inverter Communication ...
Page 700: ...H 2 FX Series PLC User s Manual Data Communication Edition Programming Communication ...
Page 752: ...I 2 FX Series PLC User s Manual Data Communication Edition Remote Maintenance ...
Page 817: ......