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13 Configuration
13.14 Modbus/TCP
This menu is used to implement settings for the Modbus/TCP operating mode.
Chapter 14.4 "Modbus frames for reading", page 212
Chapter 14.5 "Modbus frames for writing", page 213
If the multifunction panel functions as a Modbus master, it can communicate with up to four ex-
ternal devices (Modbus slaves; device 1 to 4). If it functions as a Modbus slave, two external
devices (Modbus masters) can simultaneously access the multifunction panel.
Communication via Modbus is described in more detail in the separate Modbus interface de-
scription (B 705060.2.0).
Setup dialog
Parameter
Parameter Selection/settings Description
Modbus slave (multifunction panel as Modbus slave)
Port 0 to 502 to 1024 TCP port for Modbus/TCP
Changes to the port are not applied until
after the system has been restarted.
Modbus master (multifunction panel as Modbus master)
Timeout 4000 to 5000 to 10000 ms A request sent by the master is defined
as faulty if no answer is received within
this time.
Scanning cycle 60 to 500 to 99999 ms The Modbus master requests data from
the Modbus slave at these intervals.
IP address 0.0.0.0 IP address of the external device (Mod-
bus slave)
The address must be set.
Port 0 to 502 to 1024 TCP port of the external device for Mod-
bus/TCP
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