# Connection

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The valve cluster uses a two wire bus for the inter communication between the Master and the Slave

valves. The valves are connected in a daisy chain and the bus must be terminated on both sides by a

‘Terminating Resistor’ switch (TR). Refer to chapter: «Valve cluster address configuration».

Link Adapter

Link cable

RJ45 pinning: active pins 4 and 5

Pin | Description
1 | not used
2 | not used
3 | not used
4 | Data
5 | Data
6 | not used
7 | not used
8 | not used

VAT recommends a cable with the following specification:

•Standard patch cable

•Category 5 or higher

•Double ended with shielded RJ45 connector

•Straight through connection 1:1