ICP DAS, MDC-211-WF user manual , v1.1 Page
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2.6.2.
Inquire Corresponding Modbus Register Address
When the users define a Modbus command, MDC-211-WF automatically generates the
corresponding Internal Register address according to the order of the Modbus command.
The users only need to select "I/O Information"
→
"Internal Register", the browser will
automatically load the Modbus Register mapping table.
Table 2.3 Modbus Command Definition Example
#
ModbusDevice
#
PortNo.
ModbusSlaveID
ModuleName
FunctionCode
RegStartAddr
RegCount
*
0
1
M-7060
1
0
4
*
0
1
M-7060
2
0
6
*
0
2
M-7060
1
0
4
*
0
2
M-7060
2
0
6
#
For example of the table 2.3 above, the browser will load the Modbus Register mapping
table as Figure 2.13. The "Remote" item in the mapping table represents the Register address
of the Modbus RTU device; the "MDC-211-WF" item represents the corresponding Internal
Register address. The users can access Internal Register address in the “MDC-211-WF" item
via the Modbus protocol to control the entity Modbus RTU device.
Figure 2.13 Modbus Register Mapping Table in Web Interface
