3107

3107 is the 8-terminal interface.

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Introduction

What does it do?

Switches and indicators

• thumbwheel 6, Baud-rate selection, group A
• thumbwheel 5, Baud-rate selection, group B
• thumbwheel 4, Terminal group selection, group A
• thumbwheel 3, Extended address selection, group A
• thumbwheel 2, Terminal group selection, group B
• thumbwheel 1, Extended address selection, group B

Extended address selection (TH1 and TH3) have only two valid positions: 0 - normal address range, 1 - extended address range. Extended address range means terminals 65 to 128. These terminals are reached only by using the ND-100 instruction IOXT. In addition there are switches for Current loop / RS-232 selection for each terminal.

Connectors

The A and B connectors are used for I/O, the C connector is used for the ND-100 Bus.

I/O Devices on the card

none?

References

• Norsk Data Document ND–30.008.3 EN ND-100 Hardware Maintenance , page 243