Omron RX Series - Modbus Communication Register Number List; Coil Number List

8 Communications Functions
8 - 22
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
8-5 Modbus Communication Register
Number List
• R/W in the list shows whether data can be read from, or written to, the coil or holding register.
R: Read only
R/W: Read and Write enabled
Precautions for Correct UsePrecautions for Correct Use
• The “Coil No.” in the table header shows the coil number used inside the inverter.
Use this coil number when setting communications or other options for the inverter.
• The “Modbus coil spec. No.” in the table header shows the coil number used to actually specify
the coil in the Modbus communication process.
This coil number is 1 less than the inverter “Coil No.” according to the Modbus communication
specifications.
Coil Number List
*1 Normally, this is ON when the control circuit terminal block input or the coil is ON.
In this case, however, priority for the multi-function input terminals is given to the control circuit terminal block.
If the ON status of a coil cannot be reset from the master due to communications disconnection, turning the control circuit
terminal block from ON to OFF switches the coil to the OFF status.
8-5-1 Coil Number List
Coil No.
Modbus
coil
spec. No.
Item R/W Description
0000 hex – Not used – –
0001 hex 0000 hex RUN command R/W
1: Run
0: Stop (Enabled when A002 = 03)
0002 hex 0001 hex Rotation direction command R/W
1: Reverse
0: Forward (Enabled when A002 = 03)
0003 hex 0002 hex External trip (EXT) R/W 1: Trip
0004 hex 0003 hex Trip reset (RS) R/W 1: Reset
0005 hex – Not used – –
0006 hex – Not used – –
0007 hex 0006 hex Multi-function input terminal S1 R/W
1: ON
0: OFF
*1
0008 hex 0007 hex Multi-function input terminal S2 R/W
1: ON
0: OFF
*1
0009 hex 0008 hex Multi-function input terminal S3 R/W
1: ON
0: OFF
*1
000A hex 0009 hex Multi-function input terminal S4 R/W
1: ON
0: OFF
*1