Switchgear Control Network - ABB LVS Digital Manual

COM MU NI CAT IO N I NT ERFACE CON N ECTI ON
Before any Ethernet communication can be established, it is required for every MTQ22-FBP to
have a unique IP address.
The internal switchgear network (FBP) connects UMC and MTQ22-FBP via a prefabricated
field bus plug communication cable. Each of the UMC devices need its address to be config-
ured, in accordance to the port number connection in the MTQ22-FBP.
For further details about MTQ22-FBP, refer the following document "2CDC194003D0202 Tech-
nical Description FBP Fieldbus Plug MTQ-22FBP".

5.2 Switchgear Control Network

Digital Gateway can be connected to a standard 10/100/1000 Base-T Ethernet network
through LAN2 interface (Switchgear Control Network). Network components are standard
(COTS – commercial of the shelf) components but shall be of industrial grade design (e.g. no
office switches shall be used).
Examples of connections are shown in the following figures. All System configuration tools
(e.g. MNavigate) and system components (LVS Digital Edge Gateway, Time Server) are con-
nected to this network (see Figure 2). The cable shall be CAT5 / CAT6 depending on require-
ments based on the selected Ethernet communication speed. The connector type is standard
RJ45 type.
1 TG C90 80 04
If the switchgear control network has any connection to other networks (e.g.
plant management network etc.) measures must be taken to protect the
switchgear control network against unauthorized access (e.g. through Router
and Firewall). This is a project specific configuration. Contact always the local
network administrator and review the project specific requirements.
If managed switches or routers are used in the Ethernet network, it has to be
taken care that sent ARP messages can pass through. Background: After
reboot, Digital Gateway will send an ARP (Address Resolution Protocol) mes-
sage to force all connected Ethernet devices to update their internal ARP ta-
ble. This special ARP message is used to map the network layer address (MAC
address) to a dedicated link layer address (IP address). This ARP table refresh
is required to be able to establish an Ethernet communication.
S WITCHG EAR CO NTR OL NET WORK
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