WAGO I/O System 750
Functions
69
750-8210/040-000 PFC200; G2; 4ETH; XTR
Manual
Version 1.7.0, valid from FW Version 04.01.10(23)
The DHCP server also passes other parameters in addition to the IP address.
The following table shows the complete list.
Table 37: List of Parameters Transmitted via DHCP
Parameters
Explanation
IP address
An IP address from the range of permitted address; the
range can be configured in the WBM.
The DHCP server determines the IP address to be passed
to the requesting network subscriber (client) from the MAC
address of the network subscriber and the range of
addresses to be assigned. As long as the configured
address range does not change and no bottlenecks occur
when assigning IP addresses, the DHCP server
continuously reassigns the same IP addresses to
requesting network subscribers.
When a subscriber connects to the network, for whose
MAC address a fixed IP address has been configured in the
WBM, this address is passed to it. Such a fixed IP address
can also be outside the range of freely-assignable IP
addresses.
A hostname can also be specified instead of the MAC
address for identifying the requesting network subscriber.
Subnet mask
The subnet mask configured in the network settings of the
DHCP server for the local network concerned is passed.
The subnet mask and IP address determine the range of
valid IP addresses on the local network.
Broadcast address
IP address with which an IP packet can be sent to all
network subscribers on the subnet at the same time
Lease time
Determines the validity period of the DHCP parameters
passed to a network subscriber:
Per protocol, the network subscriber is required to request
the network settings again after half the period of validity.
The lease time is configured in the WBM.
Host name
The network name is passed to the network subscriber.
The network subscriber normally sends its own name with
its request for the IP address. It is then used by the DHCP
server in its response.
Name server
The DHCP server passes its own IP address as the DNS
name server to the network subscriber.
Default gateway
The DHCP server passes its own IP address as the default
gateway to the network subscriber.
The default gateway is required to communication with
subscribers outside the local network.
Not all parameters can be set in the WBM. If you want to set other values for the
existing parameters or want to pass other parameters via DHCP, the DHCP
server must be manually configured. For the controller, the DHCP server service
is handled by the program "dnsmasq".
