6 Configuration
The information in this chapter refers to the configuration of the AD-MM 400 with
the Configuration Software AD-Studio via the configuration interface.
6.1 Operating modes
The AD-MM 400 can be either a Modbus master (default setting) or a Modbus slave.
The operating mode can be changed under ’Device functions’ in the Configuration
Software AD-Studio .
6.1.1 AD-MM 400 as Modbus Master
In this operating mode, the AD-MM 400 automatically reads the value for each display
line of a display from the holding register of a slave. The display lines are configured
independently of the display and can be freely assigned to one or more displays. Values
??of different slaves can thus be combined and displayed on a display. The picture
shows the basic arrangement.
AD-MM 400
AD-LU 30 GT
AD-LU 30 GT
AD-LU 30 GT
Slave 1
Slave 2
Slave 3
Master
RS-485, Modbus-RTU
Master, z.B. SPS
RS-485, Modbus-RTU
AD-MM 400
Slave 1
AD-MM 400
Slave 2
AD-MM 400
Slave 3
Figure 6.1: AD-MM 400 as Modbus-Master
14
