Brochure

16
LOGO! 0BA7– more options in detail
With an Ethernet interface and SD card slot, LOGO!
0BA7 opens up completely new perspectives – not only
in terms of communication capabilities. The standard
SD cards can be used – e.g. to copy programs or save
data/projects with comments. In addition, the program
memory has been expanded to 400 function blocks
and, in place of the optional battery, the internal
buffering of the real-time clock has been extended to
20 days.
Communication like never before
Devices with an “E” in their names can communicate with
each other via Ethernet. This can happen in various ways:
■
Master/slave connections
between LOGO! and LOGO!
In this case, only one of a maximum of 9 basic de-
vices processes a user program. The others only serve
to expand the I/O capacity. They provide the input
information of the digital and analog inputs to the first
LOGO! and execute the switching commands on the
other side for the digital outputs of their hardware, or
they forward the analog output values to the I/O. This
does away with the limitation on the number of chan-
nels of the previous basic devices. Of course, the basic
devices that are being used as slaves can be equipped
with the proven expansion modules up to the maxi-
mum process image.