3111

3111 is the 8-terminal interface with buffer.

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Introduction

What does it do?

Switches and indicators

• Current loop / RS-2323 selection, group A, 1-2
• TH6 - Baud-rate selection, group A
• TH5 - Baud-rate selection, group B
• Current loop / RS-2323 selection, group A, 3-4
• Current loop / RS-2323 selection, group B, 1-2
• TH4 - Terminal group selection, group A
• TH3 - Extended address selection, group A
• TH2 - Terminal group selection, group B
• TH1 - Extended address selection, group B
• Current loop / RS-2323 selection, group B, 3-4

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.

Baud-rate selection (TH5, TH6)

• 0: 110 baud
• 1: 150 baud
• 2: 300 baud
• 3: 2400 baud

• 4: 1200 baud
• 5: 1800 baud
• 6: 4800 baud
• 7: 9600 baud

• 8: 2400 baud
• 9: 600 baud
• 10: 200 baud
• 11: 134.5 baud

• 12: 75 baud
• 13: 50 baud
• 14: 100 baud
• 15: 19200 baud

Current loop / RS-232 selection

• 0 - current loop
• 1 - RS-232

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?

See also

3107

References

• Norsk Data Document ND–30.008.3 EN ND-100 Hardware Maintenance , page 250