1-8 Field Control Genius® Bus Interface Unit User’s Manual October 1999 GFK-0825F
1
A More Complex Field Control and Genius System
A more complex communications and control system is illustrated below. In this system, the Field
Control stations and Genius blocks on the lower left are controlled by a Series 90-70 PLC. The
Field Control stations and Genius blocks on the lower right are controlled by a host computer
equipped with a PCIM (Personal Computer Interface Module).
The PLC communicates with a computer running programming software via an SNP (Seri al
Network Protocol) link. And the PLC, host computer, and programmer computer exchange system
data via an Ethernet commun ications link.
Series 90-70 PLC
Genius Bus
Ethern et
SNP
Genius Bus
PCIM

For more information about Genius systems and communications, please refer to:

The Genius I/O System and Communications User's Manual, which descri bes Gen i u s system
operation, and communications formats.
The Bus Controller User's Manual for the system h ost, which includes speci fi c system interface
instructions.