BECKHOFF C1220 - Manual (Page 29)

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29 Installation notes
Beckhoff Lightbus - PC interface card C1220
Installation notes
Jumper configuration
The C1220 interface card occupies one ISA bus slot on the PC’s bus
board. The fibre-optic ring is connected with two fibre optic connecters on
the panel.
Jumpers J1 and J2 The base address for the required 4 kbyte area of the PC address space is
set by means of jumpers J2 and J1:
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Jumpers J3 and J4 The IRQ number of the Ready interrupt is defined by means of jumper J3.
Jumper J4 defines the IRQ number of the fast interrupt inputs.
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