Technical data

78 • INTERBUS
WAGO-I/O-SYSTEM 750
INTERBUS
5.1.2 Description
The physical structure of the bus is set up as a point-to-point link between the
subscribers. Each subscriber has an "incoming" bus and an "outgoing" bus.
Master
Remote bus
Remote bus segment
Remote bus
device
Remote bus
device
Remote bus
device
Remote bus
device
Remote bus
device
Bus coupler
Fig. 5-1: INTERBUS, remote bus topology g112200d
Possible configuration:
 Fieldbus Master:
PC interface card INTERBUS master,
INTERBUS master of various manufacturers
 Fieldbus devices:
WAGO-I/O-SYSTEM 752, I/O module,
digital signals
WAGO-I/O-SYSTEM 750, Modular I/O system,
digital and analog signals
The INTERBUS transmission protocol can be viewed as a large shift register.
Each slave, with its input and output data, along with the position and width, is
a set component of this shift register. Each cycle here is both an input and an
output cycle. While the Master enters output data into this shift register it
simultaneously receives input data at the other side of the ring. Each Slave
receives data at its input and, at its output, sends this data on to the next
subscriber. This means that the slave also acts as a bus repeater.