Omron CP1E - INTRODUCTION Introduction Manual page 153

Describe Modbus-RTU commands in the
DM fixed allocation words.
Communication can then be enabled by
simply turning ON the software switch
A640 CH bit 00.
Modbus-RTU easy master function
execution switch A640 CH bit 00
(for port 1)
In the DM fixed allocation words for Modbus-RTU easy master, allocate the slave
address, function, and data to the Modbus slave device. After the allocations have
been made, Modbus-RTU commands can be sent by turning the software switch ON.
Received responses are automatically stored in the DM fixed allocation words.
Note Modbus-RTU easy master execution bits and DM Fixed Allocation words depend
on unit type, CP1L10/14/20-point I/O units or 30/40/60-point I/O units, built-in
RS-232C port of CP1E N-type 20/30/40-point I/O unit or serial option port of CP1E
N-type 30/40-point I/O unit. For details, refer to CP Series CP1L CPU Unit User's
Manual (W462) or CP Series CP1E CPU Unit Software User's Manual (W480).
A-4 CP1L Programming Examples
15
D32300
(CP1E: D1200)
D32301
(CP1E: D1201)
D32302
(CP1E: D1202)
D32303
(CP1E: D1203)
Slave address
Slave address
Modbus-RTU
CP1L
08 07
Slave address
FUNCTION code
Communication data bytes
Communication data
FUNCTION code Communication data
FUNCTION code Communication data
OMRON inverter
J1000, V1000, A1000
SYSMAC CP1L/CP1E Introduction Manual
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