Leuze electronic MSI 400 Series Manual page 48

"Output data (to PLC)" section
Selection list
All data sets in one tag
Activating updates following
changes
Activate heartbeat interval
Columns highlighted white
Data set
Register
Heartbeat interval (ms)
Register range
"Input data (from PLC)" section
Selection list 1
Selection list 2
Data set column
Register column
Leuze electronic
Set automatically: Determines the transmission method.
Value required for master mode:
Gateway writes to tag/file
Optional
Defines that all data sets are to be written to a single address in
the PLC memory.
In this case the register address defined for Data Set 1 will be
used.
Note:
The following two settings can be activated simultaneously. They
determine the frequency of data transmission.
Recommended
Determines that the MSI 430 module immediately updates the
data in the PLC as soon as changes are made to the data sets.
Recommended
Use the heartbeat intervals which you defined in the Heartbeat
interval column to activate the update of the selected data sets.
Determines which data are to be written to the PLC or read from
it.
Select the checkboxes for the desired data sets.
You will find a detailed description of the data sets here: Data
transferred to the network (network input data sets) [chapter 3.2]
Define from and to where in the PLC memory the selected data
should be read and written.
Defines how often the data sets are to be updated.
Requirement: You have selected the option Activate heartbeat
interval (see above).
Shows the registers in the PLC to which the process data is writ-
ten.
Set automatically: Determines the transmission method.
Value required for master mode:
Gateway reads from register
Defines which of the two modbus commands is used:
• Read holding registers:
Activates the Read holding registers command (see "Mod-
ule commands" table below).
• Read input registers:
Activates the Read input registers command (see "Module
commands" table below).
Determines which data are to be written to the PLC or read from
it.
Mark the control boxes for the desired data sets for this purpose.
You will find a detailed description of the data sets here: Data
transferred to the network (network input data sets) [chapter 3.2]
Define from and to where in the PLC memory the selected data
should be read and written.
MSI 400
Modbus TCP gateway
48