User`s manual

User’s Manual 5
1.3 RabbitNet Peripheral Cards
RabbitNet™ is an SPI serial protocol that uses a robust RS-422 differential signalling inter-
face (twisted-pair differential signaling) to run at a fast 1 Megabit per second serial rate. The
OP7200 has one RabbitNet port, which can support one peripheral card. Distances between a
master processor unit and peripheral cards can be up to 10 m or 33 ft.
The following low-cost peripheral cards are currently available.
• Digital I/O
• A/D converter
• D/A converter
• Display/Keypad interface
• Relay card
Appendix D provides additional information on RabbitNet peripheral cards and the Rabbit-
Net protocol. Visit our Web site for up-to-date information about additional add-ons and fea-
tures as they become available.