B&B Electronics Port Expander 232PE, User Manual

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2 232PE3095 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 434-7094
Checklist
The following equipment should be in the shipping carton:
1. Port Expander
2. Instruction Manual
If any of the items above are damaged or missing contact the
shipper immediately.
Port Expansion Bus
The number of serial ports on the Expandable Smart
Switch can easily be expanded to a maximum of sixty-eight ports
by daisy chaining Port Expander units on the 232XSS's expansion
bus. A maximum of fifteen Port Expander units can be added to a
232XSS. Each Port Expander unit (232PE) adds four additional
serial ports. The Port Expansion Bus connects each port to the
electronic switch control circuit in the 232XSS.
Setting The Address
Port Expanders must be assigned their own unique address.
Located inside the 232PE is a four position DIP switch (SW1) which
sets the unit's address. Refer to Figure 2. Select an unused
address from "1" to "15" using Table 1.
CAUTION: Always power down the 232PE before removing its
cover.
Do not select an address that is used by another Port
Expander, data collisions can occur and data will be
lost!