ADwin Installation, manual version 2.1, December 2005 55
ADwin System with Ethernet Interface
ADwin
tical to the address you entered in ADconfig, the ADwin Ethernet interface can-
not be accessed any more.
If the ADwin Ethernet interface is used in a network with a DHCP server,
although the DHCP support is not activated on the ADwin Ethernet module, the
IP address of the ADwin Ethernet interface has to be entered/indicated in the
DHCP server. Thus the DHCP server gets the information that this address
must no longer be used for a dynamic allocation.
9.1.5 Host TCP/IP Port
ServicesSince for each host there are different services available, so-called unique
"port numbers" are allocated to these services. Such services are fore instance
FTP, Telnet or HTTP. The communication between an application on a PC and
an ADwin system via the ADwin Ethernet interface is such a service, too.
Port numberThe port number for this service is configurable and the default setting is 6543.
Normally this setting remains unchanged, except if conflicts with other devices
in the same network occur.
– The port numbers up to 1024 are "known ports" and should not be allo-
cated to other services.
– The port number 7000 is used in an ADwin Ethernet interface for the
configuration and must therefore not be used as "Host TCP/IP Port".
9.1.6 Password
If several ADwin Ethernet interfaces in one network are used by different
users, a not authorized access to the ADwin Ethernet interface can be pre-
vented by using a password.
PasswordThe password is independent of TCP/IP.
The password is case-sensitive and has up to 10 characters.
9.1.7 Timeout
The PC communicates with the ADwin Ethernet interface via UDP proctocols
(User Datagram Protocol).
Quality of connection
The timeout determines the maximum expected response time for a protocol
from the PC to the ethernet module and back. This time is characterized by the
connection type and the quality of connection (direct connection, intranet,
internet). The standard value of one second means a short, safe connection.
If the connection is made via internet, it may be necessary to essentially
increase the time for the timeout.
9.2 Hardware configurations and displays
9.2.1 Function of the LED displays
The ADwin Ethernet module shows its mode of operation with the LEDs ST
(status), BU (busy), AC (activity) and LI (link).
The LEDs on an ADwin-Gold-ENET are shown at
right.
PC
red: AC
green: LN
red: BU
green: ST
orange:
AC+LN
orange:
BU+ST
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