E-72
FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
9 Creating Programs (for FX3U and FX3UC PLCs)
9.1 Differences between FX2N/FX2NC PLCs and FX3U/FX3UC PLCs
9. Creating Programs (for FX3U and FX3UC PLCs)
This chapter explains how to create programs which change parameters of inverters and give operation
commands to inverters.
As explanation, a program example is shown for each applied instruction.
9.1 Differences between FX2N/FX2NC PLCs and FX3U/FX3UC PLCs
Instruction devices used in inverter communication are different between FX3U/FX3UC PLCs and FX2N/FX2NC
PLCs.
When using a program for FX
2N/FX2NC PLCs in FX3U/FX3UC PLCs, change the devices according to the
tables below.
1. Inverter communication instructions
2. Related devices
1) Bit devices
*1. In the FX
2N and FX2NC PLCs, M8063 does not turn ON when an inverter communication error occurs.
2) Word devices
Function FX2N,FX2NC FX3U,FX3UC
Monitoring operation of an inverter EXTR(K10) IVCK
Controlling operation of an inverter EXTR(K11) IVDR
Reading parameters from an inverter EXTR(K12) IVRD
Writing parameters to an inverter EXTR(K13) IVWR
Writing parameters to an inverter all at once — IVBWR
Function FX2N,FX2NC
FX3U,FX3UC
ch1 ch2
Instruction execution complete M8029 M8029 M8029
Communication error
(shared by all communication)
M8063
*1
M8063 M8438
Inverter communicating M8155 M8151 M8156
Inverter communication error M8156 M8152 M8157
Inverter communication error latch M8157 M8153 M8158
IVBWR instruction error — M8154 M8159
Function FX2N,FX2NC
FX3U,FX3UC
ch1 ch2
Error code (shared by all communication) D8063 D8063 D8438
Response wait time of inverter communication D8154 D8150 D8155
Step number of instruction during inverter communication D8155 D8151 D8156
Inverter communication error code D8156 D8152 D8157
Inverter communication error occurrence step D8157 D8153 D8158
IVBWR instruction error parameter number — D8154 D8159
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