User manual

IEC61131 User and Reference Manual
April 22, 2008
117
page is active. This page configures the IP settings for com1 when the PPP protocol is
selected for this serial port.
The Enable Auto Answer (PPP Server) checkbox enables the PPP Server on this serial
port. Check this box if you want to allow a remote PPP client to connect to this port. This
checkbox enables the remaining settings in the page.
The IP Address is the address of this serial port. The IP address is statically assigned.
Contact your network administrator to obtain an IP address for this serial port.
The Subnet Mask determines the subnet on which this serial port is located. The subnet
mask is statically assigned. Contact your network administrator to obtain the subnet mask for
this serial port. In a standard PPP configuration, a subnet mask of 255.255.255.255 is used
to restrict routing on this serial port to a single host (i.e. the Remote IP Address).
If another subnet mask is used, all packets on that subnet will be forwarded to this serial
port. Any address on that subnet in addition to the Remote IP Address can be used for the
remote host in this case.
The Remote IP Address is the address that will be assigned to the remote PPP client
connected to this serial port. The Automatic radio button automatically selects the address
to be the serial port‟s IP address + 1. The second radio button selects the address specified
in the edit box. Enter the IP address to assign to the remote client.
The Allow remote to specify its own IP address checkbox allows the remote PPP client to
assign its own IP address. Check this box if you want to allow this option. Note that the client
may or may not request its own IP address. If the client does not make this request, the PPP
Server will assign the IP address selected.
The Authentication determines the login protocol used at the start of every PPP
connection. The None radio button removes the login step. The PAP radio button selects the
Password Authentication Protocol (PAP). The CHAP radio button selects the Challenge-