Section 11.0 Appendix B: Modbus TCP/IP Gateway Option
HGA IOM
118
•
Read HMI Data
•
Open Simply Modbus and type in the IP address set for the Modbus TCP/IP gateway
(1)
.
•
Select mode as TCP and then hit CONNECT
(2)
. Once connected, a disconnect option will
appear in place of NOT CONNECTED.
•
Set the register size as 16 bits
(3)
.
•
Select the first register as “0” and No. of Regs to 8
(4)
.
•
Set the minus offset at “0”
(5).
•
Set the function code to 4
(6).
•
Uncheck the High Byte / Low Byte Check box
(7).
•
Click SEND
(8)
. The HMI data will appear on the table in the upper right side of the Simply
Modbus application. For register map definitions, please reference the network interface
reference
Section 7
in this user manual for data format and scaling.
•
To receive data continuously, decrease the pause between sends to 0.0 and check send
continuously
(9)
.
Figure 71: Simply Write Modbus Screen
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