Modbus/Tcp - JUMO mTRON T Operating Manual

6.6

Modbus/TCP

This menu is used to make settings for the Modbus TCP operating mode.
 Chapter 8.2 "Modbus frames for reading", page 120
 Chapter 8.3 "Modbus frames for writing", page 121
If the central processing unit is operating as the Modbus master, it can communicate with up to
four external devices (Modbus slaves; device 1 to 4). If it is operating as the Modbus slave, two
external devices (Modbus masters) can access the central processing unit at the same time.
Communication through the Modbus is described in more detail in the separate Modbus inter-
face description (B 705001.2.0).
Setup dialog
Parameters
Parameter
Modbus slave (central processing unit as Modbus slave)
Port
Modbus master (central processing unit as Modbus master)
Timeout
Scanning cycle
IP-address
Port
Selection/settings
0 to 502 to 1024
60 to 2000 to 10000 ms
60 to 500 to 99999 ms
0.0.0.0
0 to 502 to 1024
6 Configuration
Description
TCP port for Modbus/TCP
Changes to the port are not applied until
after the system has been restarted.
A request sent by the master is defined
as faulty if no answer is received within
this time.
The Modbus master requests the Mod-
bus master data from the Modbus slave
at these intervals.
IP address of the external device (Mod-
bus slave)
The address must be set.
TCP port of the external device for Mod-
bus/TCP
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