66
Functions
WAGO I/O System 750
750-8210/040-000 PFC200; G2; 4ETH; XTR
Manual
Version 1.7.0, valid from FW Version 04.01.10(23)
IP address and the network mask 192.168.1.10/24. Furthermore, a gateway with
IP address 192.168.1.2 and metric value 20 is set up on the controller. Therefore,
when no specific routing entry exists for the target address of network data
packets, the controller sends them to gateway 192.168.1.2. Besides the IP
address and network mask, the DHCP server is now instructed to allocate a
default gateway of 192.168.1.1. The controller gives this default gateway a metric
value of 10. Therefore, the default gateway received via DHCP is preferred over
the manually configured gateway.
The routing entries are used to specify which gateways the network data packets
are sent. If the controller is running in switched mode and only has one network
interface, all network traffic passes through this network interface. If the controller
is running in separated mode or contains a modem, it has more than one network
interface. Therefore, it is possible for a network data packet to arrive at the
controller on one network interface and depart on a different network interface.
This forwarding between different network interfaces must be explicitly enabled; it
is disabled when the controller is delivered. To enable the forwarding, “Enabled”
must be enabled in the “IP Forwarding through multiple interfaces” group. In this
case, the controller can function as a router.
For forwarding network communication through a router, it is necessary to note
that corresponding routing entries must be provided not only for the router, but
also for the respective endpoints of the communication. The routing entries of the
endpoints must ensure that the desired network data packets are sent via the
router, both when the connection is established and with the replies.
Host route example:
A host route is a route to an individual host. In the following example, a route to a
host with IP address 192.168.1.2 is to be specified. The route passes through a
gateway that can be reached via address 10.0.1.3. To configure a host route to
the destination host on a controller connected to the gateway, the following
settings must be made:
Destination Address: 192.168.1.2
IP address of the destination host
Destination Mask:
255.255.255.255 Subnet mask of an individual host
Gateway Address:
10.0.1.3
IP address of the gateway
Gateway Metric
20
Route priority
Network route example:
A network route is a route to a subnet, which can contain multiple hosts. In the
following example, a route to a subnet should be specified with network address
192.168.1.0. The route passes through a gateway that can be reached via
address 10.0.1.3. To configure a network route to the destination network on a
controller connected to the gateway, the following settings must be made:
Destination Address: 192.168.1.0
IP address of the destination network
Destination Mask:
255.255.255.0
Subnet mask of the destination network
Gateway Address:
10.0.1.3
IP address of the gateway
Gateway Metric
20
Route priority
