Eliwell FREE Panel EVP 3300/C, Руководство по установке

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FREE Panel
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RS485
INSTALLING THE RS-485 NETWORK
NOTE 1
Use a shielded and " twisted pair " cable with two 0.5mm
2
conductors, plus braiding (ideally Belden cable model 8762 with
PVC sleeve, 2 conductors plus braid, 20 AWG, nominal capacity between conductors 89pF/m, nominal capacity between
conductor and shielding 161pF/m).
See EN 50174 standard on IT cabling for indications on how cables should be routed.
Make certain that data transmission circuits are properly separated from power lines.
An RS-485 network up to 1200m in length with a maximum of 256* devices can be connected straight to the controller.
*Note: example of Evolution Modbus Slave with single Master supervisor.
This length can be extended and the number of devices for each channel increased using appropriate repeater modules.
NOTE 2
Single terminal strip with 3 conductors: use all 3 conductors (“+”, “-“ for the signal and “GS” for the braid).
NOTE 3
Attach the 120 (Ohm) 1/4W resistors between the "+" and "-" terminals of the interface and the last controller in each
branch of the network.
NOTE 4
Maximum settable speed 57600 baud. Higher speeds are envisaged for local connection to FREE Studio Device and tests.
ETH
The Ethernet connection allows the FREE PANEL to communicate on an Ethernet network using TCP/IP protocol.
The connection allows:
 connection of different controllers and/or applications exchanging variables and/or parameters ( network).

connection of a supervision system using Modbus TCP/IP protocol
 connection of an IEC 61131-3 Free Studio development system
NOTE : The Ethernet connector shield is internally connected to the earth of the instrument and therefore to the reference
of the input and output channels.
RS485
ETHERNET