I-O Display Systems Basic I/O Product - Manual (Page 74)

Setup 3
3-1(Vol.2)
Chassis Setup
Figure 3-17 Connectors, Switches, and Indicators
During the setup phase of a BASIC I/O AD system, the chassis is given specific values for
unit address, analog/ digital separator, network baud rate, and protocol pass type. A
momentary pushbutton and seven segment display provide access to these parameters. Figure
3-17 shows the location of these components labeled setup pushbutton and sequential display.
Function addresses:
Each host instruction includes an address made up of two hexadecimal characters (00h-FFh).
At any BASIC I/O AD network connection 3 different types of functions can be performed,
each with its own unique system -wide function address. There are two BASIC I/O AD
addressing modes, offset and variable.
Offset Mode
Units are shipped in the offset mode where only master init control address needs be set (with
a range of 00h-3Fh). The remaining function addresses are automatically calculated and set
based on master address.