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EN_User_documentation_Instructions_for_controlling_the_Logamatic_5000_controller_series_via_Modbus_TCP_I
P_20210203.docx | 10.02.2021
Figure 2-4: Functional principle of Network
2.7.1
Control via Modbus TCP/IP in the controller network
If you operate the controller in a controller network, i.e. you have connected a mas-
ter controller and at least one slave controller, you can access the data points of the
slave controller via the master controller. The behavior of the controller, whether it is
to function as master or slave, is set via the rotary coding switch on the controller
(see documentation "Service manual for the specialist - Logamatic 5311" or "Service
manual for the specialist - Logamatic 5313").
Figure 2-5: Overview of control unit network with Logamatic 5000
The data points between a master and a slave controller differ only in their Modbus
address for addresses smaller than 8000. As soon as the controller acts as a slave,
you can access the data points via the master controller using the following formula:
𝑀𝑜𝑑𝑏𝑢𝑠𝐴𝑑𝑑𝑟𝑒𝑠𝑠𝑆𝑙𝑎𝑣𝑒 = 𝑀𝑜𝑑𝑏𝑢𝑠𝐴𝑑𝑑𝑟𝑒𝑠𝑠𝑀𝑎𝑠𝑡𝑒𝑟 + (𝑅𝑜𝑡𝑎𝑟𝑦 𝑐𝑜𝑑𝑖𝑛𝑔 𝑠𝑤𝑖𝑡𝑐ℎ ∗ 500)
Note:
The already calculated addresses can be found in the data point list (sheets
Slave01 - Slave15).
The formula can only be used for data points with address less than 8000.
Data points from and including address 8000 are only available in the mas-
ter.
