MP500/4N-8-16 Installation
5.12.2 Connecting the data Bus
Connect the terminals +, +D, D and ─ the cable to the 4 wires of the bus; this will enable the communications among the control panel,
readers, keypads, any expansions present.
The data bust requires no terminal resistors.
The cable shieldings can be connected together in the control panel at the negative pole (─) of the power supply.
The Figure 56 - Connections via bus demonstrates how to connect the various devices to each other via the bus line.
Figure 56 - Connections via bus
5.12.3 Connecting the audio Bus
Connect, if necessary the twisted pair of the audio bus to the A1 and A2 terminals of the SV500N vocal synthesis board.
When connecting the audio bus, it is not necessary to take the polarity into account.
Figure 57 - Connections the audio bus
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