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FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
7 Creating Programs (FX2N, FX2NC)
7.2 Common Items in Inverter Communication Instructions
7.2.3
Instruction completion and error flag operation
When two or more EXTR instructions are programmed, the following flags turn ON or OFF according to the
execution result of each EXTR instruction.
For acquiring the result of each EXTR instruction, make sure to provide these flags just below each EXTR
instruction.
1. Operation of M8029 (instruction execution complete flag)
M8029 (instruction execution complete flag) operates as shown below.
In the program below, M0 and M2 turn OFF and M1 turn ON when communication is completed.
2. Operations of M8156 (error flag) and D8156 (error code)
M8156 (error flag) and D8156 (error code) operate as shown below.
In the program below, a communication error occurs in [1] and [3], and communication is completed normally
in [2].
Device number
Description
M8029
Instruction execution complete
M8156
Communication error or parameter error
D8156
Error code
M0
FNC180
EXTR
FNC180
EXTR
FNC180
EXTR
[1] EXTR instruction is not driven.
M1
M2
(OFF)
(ON)
(OFF)
Operation of
instruction execution
complete flag
M8029 : OFF
M8029 : ON
M8029 : OFF
[2] EXTR instruction is driven.
[3] EXTR instruction is not driven.
M8000
FNC180
EXTR
FNC180
EXTR
FNC180
EXTR
RUN
monitor
Operation of
communication
error flag
Error code
status
[1] Communication error (no response from inverter)
[2] Normal communication
[3] Communication error (data range error)
M8156 : ON
M8156 : OFF
M8156 : ON
D8156: K1
Error code is
stored
D8156: K1
Error code is not
changed
D8156: K268
Error code is
stored
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 ...
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