2.5 KEYBOARD CASCADING

It is possible to cascade up to three slave keyboards off a master keyboard that is connected to the multiplexer / DVR and dome RS485 line. All keyboards in the cascade can communicate with any DVR, multiplexer, or dome connected to the master.

2.5.1Master/Slave Connection

A system of cascaded keyboards is connected as shown below.

Figure 7. SAMPLE SYSTEM OF CASCADED KEYBOARDS.

In the above system two slave keyboards are connected to a master keyboard. The system also has two multiplexers, and two DVRs connected. And VCL (Orbiter / Rapid ) dome data is being input into the system from a control device.

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8-Sept-05

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Honeywell HJZTPX user manual Keyboard Cascading, Master/Slave Connection