1.2.2 Multi-reader Systems.
The THOR readers can be connected together on a RS485 bus using the same multi-master protocol as used in
the THOR Intruder system, but without an extra controller. The reader programmed as no. 00 will automatically
be the master in the Multi-master protocol. Max. 32 units like readers, printer interface etc. can be connected on
the same bus.
By using one or more Bridges (95T GPI BR) a sub-level bus can be added again with maximum 31 readers.
Maximum 30 sub-level busses can be installed and only in one level. The total number of readers is 900.
If a printer is needed, the printer interface can either be installed in the THOR power supply 90T - PS or as a
separate unit connected on the RS-485 bus. A printer installed on a sub-level bus can only make print-outs from
readers on the same bus. A printer installed on the master bus can make real-time event print-out from all
readers where the option has been selected.
The PC interface (95T GPI COM) and the PC must be placed on the Master bus level 0. The complete system
works without the PC (interface) and can also be programmed directly from the readers, but in bigger systems
the PC is a good tool to manage and program the system.
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