YOKOGAWA UT150L, User Manual

Page: 49 / 60

IM 05C01E22-10E
5-1
Chapter 5 Functions and Usage of D Registers
5. Functions and Usage of D Registers
5.1 Overview of D Registers
This section explains the functions and usage of D registers.
The D registers store the parameter data, flag data and process data that are handled by UT150L
controller. By connecting UT150L controller to host devices capable of PC link communication, or
MODBUS communication, you can readily use these internal data items by reading from or writing to
the D registers.
Using the D registers, you can perform:
• Centralized control using host devices
• Data exchange by reading/writing using host devices
5.2 Interpretation of Lists of D Registers
(D Register Map Tables)
This section explains how to read the “D Register Map” tables in this chapter. In the example shown
below, the number in the leftmost column denotes (1) D-register number. The five-digit number in the
column on the immediate right of the leftmost column represents (2) Reference number for MODBUS
communication. The number in the column third from left is (3) Register number (hexadecimal) for
the MODBUS communication program. Each register code name in the D Register Map tables
represents register name of specific process data item, operating parameter, setup parameter or other
data items. For details on the operating and setup parameters, see Model UT150L Limit Controller
instruction manual (IM 05C01E22-01E).
Name of D Register Map
D-Reg No.
D0001
Ref No.
40001
H No.
0000
Register name
STATUS R
R/W
(1) D register number (3) Hex number (for MODBUS communication)
(2) Reference number (for MODBUS communication)
Reading/writing via communication
(R: reading; W: writing)
An asterisk (*) indicates that the number of
writing actions is limited to 100,000 times.
*