Yokogawa Value Series FX1000 - Manual (Page 75)

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IM 04L21B01-17EN
Using the Serial Communication Interface (/C2 and /C3 Options)
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Index
2.5 Using the Modbus Slave Function
The FX is used as a Modbus slave.
For the Modbus specifications, see section 6.3.
Setting the Serial Communication
Select Modbus as a protocol on the Basic settings. For detail, see section 2.4, “Setting
the Serial Communication.”
Reading/Writing the FX Data on Another Device
Another device (master device) sends commands to the FX to read the FX data or write
data to the FX. You can perform some operations, such as memory start, by writing in the
registers.
For the function codes that the FX supports and the FX registers that the master device
can access, see “Modbus Server Function” in section 6.3.