User Manual

Programming LOGO!
3.8 Configuring additional functions for LOGO!
LOGO!
Manual, 06/2014, A5E33039675
103
● Network digital outputs: NQ1 to NQ64
● Network analog outputs: NAQ1 to NAQ16
3.8.5
Changing LOGO! to master/slave mode
LOGO! 0BA8 provides a menu command for network communication settings. This section
shows you how to change LOGO!'s network communication mode.
A LOGO! 0BA8 device works in either
master
or
slave
communication mode.
Master mode versus slave mode
A LOGO! 0BA8 in master mode supports client-server communication with SIMATIC S7
PLCs, a SIMATIC HMI or other 0BA8 devices across Ethernet. This LOGO! can additionally
act as a master to communicate with one or more 0BA8 devices in slave mode.
A LOGO! in slave mode functions as a LOGO! expansion module. LOGO! slave devices do
not require a circuit program. A master LOGO! can read one or more slave LOGO!'s
digital/analog input/output values and write its own digital/analog output values to these
slaves. This helps LOGO! achieve network I/O expansion.
Note
A LOGO! in slave mode can also have its own expansion modules. It also supports a
maximum of 24 digital inputs, 8 analog inputs, 20 digital outputs and 8 analog outputs.
Changing LOGO! from master mode to slave mode
1. In the main menu in programming mode, move the cursor to "①": Press or
2. Confirm "
①": Press
OK
3. Move the cursor to "
②": Press or
4. Confirm "
②": Press
OK