Yokogawa Removable Chassis DX1000N - Manual (Page 232)

6-6
IM 04L41B01-17E
• Loading to Communication Input Data and Direct Writing of Values to
the Server
• Values from the server register are loaded into the DX communication input data.
When you perform the appropriate operation from the custom display, the values
are written to the server register.
• Loading and writing occur in sync with the communication interval.
Read Read Read Write Read
Communication
interval
Executed
command
Write operation from
the custom display
• Values are only written to the server when the state of communication is normal (the
lamp in the Modbus status display is green), otherwise an error occurs. The DX
only attempts to write to the server once. It does not retry after failing.
• Communication input data is an option (/M1, /PM1 option).
• The data type of the communication input data is 32-bit floating point.
• You can display communication input data on a computation channel by including
the data in the equation of a DX computation channel (/M1, /PM1 option). You can
also set the measurement range and unit for computation channels.
E-M
40001 to 49999
400001 to 465536
INT 16, UINT 16,
INT 32_B, INT 32_L,
UINT 32_B, UINT 32_L,
FLOAT_B, FLOAT_L
Communication input data
Number: C01 to C24 (DX1000)
C01 to C60 (DX2000)
Format: 32-bit floating point
Register
Server Device
Data format Comman
type
DX1000, DX2000
Load
Write
6.3 Modbus Protocol Specifications