Omron 3G3AX-MX2-PRT-E, User Manual

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Faults and Trips
Section 4-4
• Only map a Modbus registers in the output process area if it is writeable.
A register is writeable if it has an 'R/W' or a 'W' in the 'R/W' column in sec-
tion B-4-2 of the MX2 Inverter user's manual.
• Only map a Modbus register in the output process area if it is run-mode
editable. Refer to section 3-2-3 of the MX2 Inverter user's manual for an
explanation of run-mode editable registers. Also note that the run-mode
edit requirement can be disabled with b031.
If you want to avoid configuration rejection, observe the following rules for the
RX:
• Set all unused PZDs to default by setting the associated configuration
register to 0.
• Only map Modbus registers listed in section 4.4 Register Number List of
the RX Inverter user's manual.
• Do not map a Modbus register more than once in the output process
area.
• Always map both high- and low-words of a double-word Modbus register
next to each other in the process area. Also make sure that they are in the
correct sequence (high-word followed by low-word).
• Only map a Modbus registers in the output process area if it is writeable.
A register is writeable if it has an 'R/W' or a 'W' in the 'R/W' column in sec-
tion 4.4 Register Number List of the RX Inverter user's manual.
• Only map a Modbus register in the output process area if it is run-mode
editable. Refer to Appendix 1 of the RX Inverter user's manual for an
explanation of run-mode editable registers. Also note that the run-mode
edit requirement can be disabled with b031.
4-4 Faults and Trips
4-4-1 External Trip
You may want to trip the Inverter from your PLC program. The PROFIdrive
device profile does not provide a standard interface to achieve this, but you
can use the Modbus coil number 0003h to generate an external trip (EXT):
Step 1 Follow the instructions in section
4-3-2 Mapping Coil Data 0
to map Coil data
0 into PZD3.
Step 2 Set bit 3 (EXT) of Coil data 0 which has been mapped into PZD3 to trip the
Inverter.
Table 35 Output Process Area when Using EXT to Trip Inverter
I111E-EN-02+3G3AX-MX2-RX-PRT+OperManual.book Seite 38 Donnerstag, 8. September 2011 11:53 11