2TFP900034A1001 ECN000087106 Rev. A
Ekip E-Hub | 11
Topology
As an example, the illustration below shows how to wire the system if your field devices of
Modbus TCP/IP are in Intranet, which is isolated from Internet.
LAN1 should be connected to Internet.
LAN2 should be connected to Intranet.
Fig. 2
NOTE
: Although E-Hub has built-in firewall feature to block initiative access from
internet and allows only initiative to internet from E-Hub. It is still recommended
to deploy dedicated firewall between E-Hub and internet. It is recommended to
configure rate limiter either at device level or network level depending on the
requirement.
LAN1
LAN2
RS-485 1/2
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