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Each port of the PCL-740 card has two associated status jumper
groups and one six position DIP switch. If you do not use the boards
default settings then these all require configuring prior to use. I/O
port base address, interrupt level, RS-232/422/485/current-loop
driver mode and receiver status all require setting up. The functions
of the relevant DIP switches and jumpers are shown below.
Selection
Protocol Selection
Current-Loop Status
Address Selection
IRQ Selection
Please refer to the diagram on the previous page for jumper and DIP
switch locations.
10
PCL-740 User's Manual
Switches/Jumpers
JP5
JP2
JP3,4
SW1
JP1
Function
RS-232/422/485/Current-Loop
Current-Loop TX active/passive
Current-Loop RX active/passive
Base address for serial port
Interrupt level for serial port
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