GE Industrial Solutions HE300GEN251 - Manual (Page 33)

PAGE 34 23 SEP 1999 CH.5: PLC CONFIG.
Figure 5.3. Series 90-30 GBC Configuration Screen
The devices residing on the Genius LAN are configured in the lower "Device Data" section of the screen.
The cursor keys are used to navigate around the screen. When the cursor is on the "Device Data"
section of the screen, the PageUp and PageDown keys are used to select the Device number. Once the
proper device number is displayed for the AV-300i, the following parameters can be set.
a. Device Type
The AV-300i is configured as a GENERIC device type, which is the default.
b. Input References (Input 1 Ref, Input 2 Ref)
These parameters specify where the SBI’s global data is mapped in Series 90-30 memory. Legal
reference types for these parameters are %I, %G, %AI, and %R. As you can see, the global data
broadcast by the GEN250/251can be divided into two different areas of PLC memory. For instance, part
of the global data could be mapped into %I, and the remainder into %AI. Two non-consecutive areas of
the same reference type could also be mapped. For instance, part of the global data could be mapped to
%R1, and the remainder to %R500.
c. Input Length (Input 1 Len, Input 2 Len)
These parameters specify how much global data is broadcast by the SBI. If the Input Reference specified
is bit-type (%I, %G), the length parameter is in bits. If the Input Reference specified is word type (%AI,
%R), the length parameter is in words. The total amount of data mapped into the Series 90-30 must
exactly match the total amount of global data broadcast by the SBI.