
4 Communication settings and guide of HMI connecting with controller
NOTE:
1. Make sure the data type of PLC same as the HMI when defining the data block. For example, if the data
type of PLC is REAL, then the data type of number input/display component must be float in HMI.
2. Make sure that the data block defined in PLC should be more than the data block used in HMI. For
example, if DB5.DBW32 is used in HMI, user can’t define the data block up to DB5.DBW32, but up to
DB5.DBW34 or more.
SIEMENS S7-300 Ethernet(TCP Slave) protocol
HMI Setting
PLC Setting
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