Yokogawa Touch Screen GP20 - Manual (Page 330)

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IM 04L51B01-01EN
4.4.4 Checking the Modbus Operation Status
Procedure
For the procedure, see page 2-48 in section 2.3.6, “Checking the Command Status of the
Modbus Client and Modbus Master”.
4.4 Using Modbus to Enable the GX/GP to Read Data from and Write Data to Other Devices (Modbus master function)