LAB-EL LB-760, Installation Manual

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LB-762 Controller Installation Manual LAB-EL
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Rysunek 1.3: Scheme of a system with several LB-762 regulators and Ethernet network
1.4.2 RS-485 network
Figure 1.4 presents a scheme of installation in which N LB-762 type regulators are combined by means of a RS-485 network.
The number of regulators that can be connected in one RS-485 network segment is from 1 to 32 (see description of RS-485
network connections), maximum total length of cable is 1200 meters.
RS-485 network requires the application of LB-480 module that works as converter of communication interfaces. Connection
between a PC computer and LB-480 module is by means of Ethernet network. LB-480 module communicates with the
regulators by means of RS-485 network. Additionally, to LB-480 unit common system equipment may be attached – such as
an external hytherograph and CO
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concentration meter.
Comments with regard to the method of cabling RS-485 network can be found in Section 3.11 .
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Rysunek 1.4: Scheme of a system with several LB-762 regulators and RS-485 network
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