
Setup 3
3 - 1
Chassis Setup
Figure 3-1 Connectors, Switches, and Indicators
During the setup phase of an I/O PLEXER system, the main chassis are given
specific values for unit address, network baud rate, and protocol pass type. A
momentary pushbutton and seven segment display provide access to these
parameters. Figure 3-1 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 to Ffh). At any I/O PLEXER network connection up to 6
different types of functions can be performed, each with its own unique system
wide function address. The address for functions which are not present in a
particular chassis is set equal to the master address so as not to occupy valid
space. There are two I/O PLEXER addressing modes, OFFSET and VARIABLE.
Offset Mode
Units are shipped in the OFFSET mode where only the master unit control
address needs to be set (with a range of 00H to 3FH). The remaining active
function addresses are automatically calculated and set based on the master
address
.
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