GE Industrial Solutions HE300GEN251 - Manual (Page 7)

PAGE 8 23 SEP 1999 CH.1: INTRODUCTION
2. – 4. A PLC is the main controlling element of the Genius Network and contains the Genius Bus
Controller (GBC) module, which functions as the master for the Genius Network. Communications over
the Genius Network are coordinated via the master device. The GBC serves as an interface between the
PLC and the Genius Network. The Genius Network contains up to 32 devices.
5. – 6. The GEN250/251 allow communications over a Genius Network by providing a communication
port between an AV-300i drive and a master device such as a Genius Bus Controller (GBC), which is
located in a PLC.
The GEN250/251 serve as Serial Bus Interfaces (SBI) and are GENA based. Thus, the GEN250/251 are
slave only Genius communications devices and can not control other devices on the Genius bus. They
also can not look at other device data. Communication is accomplished using the standard Genius
format by sending Broadcast (Global) Data
to the GBC and listening to Directed Control Data from the
GBC. The GEN250/251allow up to 32 words of Broadcast Data and up to 16 words of Directed Data to
be configured per drive.
The GEN250 and the GEN251 have identical functions but differ physically. The GEN250 is placed
internally within the AV-300i drive. The GEN251 is externally mounted outside of the AV-300i drive. The
reason for the external mounting capability is that some applications require the installation of an
additional option card (DGF Option Card) in the AV-300i drive where a GEN250 is typically inserted.
Thus, the GEN251 can be used as an interface in such cases, because it is external to the AV-300i. (The
DGF Option Card is discussed in Chapter Two.)
1.3 Before Getting Started - Order of Configuration and Setup
This manual covers several procedures involving various devices that must be configured and setup.
Although not required, the following order is suggested to setup and configure the GEN250/251 and other
related Genius devices in an orderly and efficient manner.
1. Analyze the specifications and requirements of the application.
Note: Refer to Section 1.2 for a functional overview of a Genius Network containing the
GEN250/251 modules in this user manual (Horner Genius

Serial Bus Interface Option Card
for GE AV-300i

Adjustable Speed Drive user manual [MAN0308]). It is also recommended
to read Chapter 4 which covers elements applicable to Genius Communications.
2. Become familiar with the parameters listed in the GE Industrial Control Systems AV-300i
Adjustable Speed Drives Instruction Manual before starting any configuration procedures.
a. Determine which parameters must be used to meet the requirements and specifications of the
application. Required parameters must be determined before starting configuration procedures for the
SBI (GEN250/251).
Note: There is a chapter in GE’s manual that provides Parameter Lists and includes tables that
list the parameters in
alphabetical order and numeric order . Each table provides different
information about the parameters, which is needed for configuration.