Yokogawa Removable Chassis DX1000N - Manual (Page 72)

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IM 04L41B01-17E
Function for Automatically Assigning MW100s to the Modbus Client (DX2000
Only)
The following setup is carried out from the DX using YOKOGAWA’s MW100 Data
Acquisition Unit as a Modbus server.
If the DX2000 is a Modbus client, MW100s, Modbus servers on the network, can be
automatically assigned to the DX2000. This function can be used only on DX2000s with
the external input channel function (/MC1 option).
Setup Preparation
Set the MW100s so that measurements can be started (IP address, system construction,
range setting, and the like of the MW100s to be automatically assigned). For details, see
the user’s manual of the MW100.
Setup Procedure
If the IP address of the DX is not set, set it before carrying out the procedure below.
1. Press MENU (to switch to setting mode), hold down FUNC for 3 s (to switch to
basic setting mode), and select the Menu tab > Communication (Ethernet) >
Modbus client > Auto setting.
2. Carefully read the displayed precautions.
Select Yes to execute the auto setting. Select No to return to the screen
operation.
3. From the list of MW100s that is displayed, select the MW100s to be connected
using the up and down arrow keys, and press DISP/ENTER. The selected
MW100s are assigned to the external input channel of the DX.
Displays the IP address or host name. Displays the MW100 unit number. The list displays up
to 16 units from the smallest unit number.
Pressing the Call soft key causes “--” to blink on the 7-segment LED display of the selected MW100 for 2 seconds.
This allows you to check which MW100 is selected if multiple MW100s are connected.
Displays the status of the external input channel assignments.
No settings: Status in which the MW100 is not
assigned automatically
Not Ready: Status in which the MW100 cannot be
connected*
Numeric display: Displays the number of the assigned
external input channels
Example: If a MW100 is assigned to
external input channels 201
to 220, the status displays
201/220.
* For the corrective action, see the DX1000
or DX2000 User’s Manual.
1.10 Using the Modbus Client Function