Specifications

10 PCL-741 User's Manual
Card Configuration
Each port of the PCL-741 card has four 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/current-loop driver mode
and current-loop driver and receiver status all require setting up. The
functions of these DIP switches and jumpers are shown below.
PCL-741 Switch and Jumper options
Selection Switches/Jumpers Function
Protocol Selection
CH1 RS-232 or Current-Loop
CH2 RS-232 or Current-Loop
Current-Loop Status
Tx1 Current-Loop TX active/passive
Rx1 Current-Loop RX active/passive
Tx2 Current-Loop TX active/passive
Rx2 Current-Loop RX active/passive
Address Selection
SW1 Base address for port 1
SW2 Base address for port 2
IRQ Selection
CH1 Interrupt level for port 1
CH2 Interrupt level for port 2
Please refer to the diagram on page 9 for jumper and DIP switch
locations.