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8 Communications Functions
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
8-
3 Mod
bus
Com
m
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icat
ion
Par
a
met
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8
8-3
Modbus Communication Parameters
Set the following parameters according to the communications specifications.
Note that changes to the C071, C074, and C075 data are applied when the power supply is cycled.
• To control the frequency reference or RUN command via Modbus communication, set the 1st/2nd
Frequency Reference Selection (A001/A201) or 1st/2nd RUN Command Selection (A002/A202) to
03 (Modbus communication).
• According to the communications specifications of the host, set the Communication Speed Selection
(Baud Rate Selection) (C071), Communication Parity Selection (C074), Communication Stop Bit
Selection (C075), Communication Error Timeout Time (C077), and Communication Wait Time
(C078).
• In the Communication Station No. Selection (C072), set the slave address of the inverter.
• If the communications with the host are interrupted for a period longer than the Communication Error
Timeout Time (C077) setting, the inverter will detect an communications error. In the Operation
Selection on Communication Error (C076), set how the inverter should operate if it detects a commu-
nications error.
When this parameter is set to 00 or 01, you must reset the trip in order to resume the inverter control.
?
00 (Trip)
: Detects a Modbus communication error (E41.
) and shuts of the
output.
01 (Trip after deceleration stop) : Makes a deceleration stop and detects a Modbus communication
error (E41.
).
02 (Ignore)
: Ignores the communications error and continues to run according
to the current reference/command.
03 (Free-run stop)
: Shuts off the output, but does not trip.
04 (Deceleration stop)
: Makes a deceleration stop, but does not trip.
Parameter
No.
Function name
Data
Default
data
Unit
A001/A201
1st/2nd Frequency
Reference Selection
03:
Modbus communication
02
−
A002/A202
1st/2nd RUN Command
Selection
03:
Modbus communication
02
−
C071
Communication Speed
Selection
(Baud Rate Selection)
03:
2400 bps
05
−
04:
4800 bps
05:
9600 bps
06:
19.2 kbps
07:
38.4 kbps
08:
57.6 kbps
09:
76.8 kbps
10:
115.2 kbps
C072
Communication Station
No. Selection
1. to 247.
1.
−
C074
Communication Parity
Selection
00:
No parity
00
−
01:
Even parity
02:
Odd parity
C075
Communication Stop Bit
Selection
1:
1 bit
1
−
2:
2 bits
C076
Operation Selection on
Communication Error
00:
Trip
02
−
01:
Trip after deceleration stop
02:
Ignore
03:
Free-run stop
04:
Deceleration stop
Summary of Contents for SYSDRIVE MX2 SERIES
Page 1: ...Multi function Compact Inverter MX2 Series Type V1 User s Manual I585 E1 01 3G3MX2 A V1 ...
Page 32: ...CONTENTS 29 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 108: ...2 Design 2 48 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 176: ...4 Parameter List 4 42 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 538: ...10 Troubleshooting 10 22 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 598: ...12 Options 12 50 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 614: ...Appendices A 16 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 615: ...I 1 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 I Index ...