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Daisy Chain Connection (Bus); Free Topology Connection (Star) - Honeywell Temaline TK-S014 Installation Manual

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It is possible to connect TemaServer and the RTU in two different ways:
Daisy chain (also known as Bus)
Free topology (also known as Star)
Based on the type of connection used in your plant some terminator resistors are required; if you don't install
them the RTU A08 device will not work in a proper way.

Daisy chain connection (BUS)

The LONWORKS data cable must be twisted-pair.
In a bus configuration, the total length of the sections must not exceed 2700m.
Check that the length of the LONWORKS
In a bus configuration, place two terminators (with resistance values of 100ohm 1% ½W) at each end of the
bus.

Free topology connection (STAR)

The LONWORKS data cable must be twisted-pair.
In a free topology configuration, the total length of the sections must not exceed 500m.
Check that the length of the LONWORKS
In a free topology configuration, activate the 51 ohm terminator by placing the appropriate jumper on the
related TemaServer device:
For TS AC close the jumper on Lonwork plug-in.
For TS2 close JP1 on the Lonwork MIP board.
For further details please refer to the related TemaServers Installation guides.
TK_S014 – Installation Manual
data cable corresponds to the norms indicated in Table 2.
Figure 7 Daisy chain (BUS) connection
data cable corresponds to the norms indicated in Table 2
15

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This manual is also suitable for:

Rtu a08