HYDROCAL 1001+ Installation and operation manual Page 58/76
4.5. Establish a Point-to-Point Ethernet Connection
In order to set up a personal computer (PC) to communicate with a HYDROCAL 1001+ unit via an
Ethernet cable a special setup is required. The HYDROCAL 1001+ as well as the PC must have a
unique address and they must reside in the same network. This is achieved by setting up two spe-
cially formatted numbers - the so called IP address and the network mask (or subnet mask).
This chapter will explain the required steps to change the settings of both the HYDROCAL 1001+ unit
and the PC.
In the example the following settings will be used:
HYDROCAL 1001+
IP address: 192.168.0.1
Network mask: 255.255.255.0
Port number: 49152
PC
IP address: 192.168.0.2
Network mask: 255.255.255.0
Port number: - only needed in Hydrosoft -
Other settings can be used but a working configuration must obey the following rules:
The network mask must be identical on PC / HYDROCAL (e.g. 255.255.255.0)
The IP address must be identical in the first 3 dot-separated numbers (e.g. 192.168.0)
The 4
th
number of the IP address must be different (e.g. 1 and 2)
The port number must not be 0, 80 (HTTP) or 502 (MODBUS
®
TCP) (e.g. 49152)
Note: Other settings are also valid but are not in the scope of this description.
4.5.1. Setup HYDROCAL 1001+
As described before, the HYDROCAL 1001+ comes with an activated DHCP option by default
(DHCP is a service in local area networks (LAN) that offers automatic configuration of IP address and
network mask). In a point-to-point connection scenario there is no DHCP service available and so a
so called static setup has to be activated on the unit and on the PC.
4.5.2. Change of TCP/IP Settings on the PC
Most of the time a PC is integrated into a local area network. The network configuration is obtained
by a DHCP server and the user doesn't need to care about the network - the cable is just plugged in
and everything else is done automatically.
When a point-to-point connection is required a manual tuning of the network adapter is needed. Us-
ing the configuration dialogs offered by the Windows Control Panel the settings of the network adapt-
er must be edited.
Note: The screen shots are taken form a PC running under an English (US) Windows 7 operating
system. The paths to open the described dialogs are one way - alternate ways exist but are not de-
scribed here. The older systems (Windows Vista and XP) also have the related dialogs - the path to
get there is different, but the settings at the detail dialog level are the same - a good way to start for
the network dialog search is always the control panel that exist in all windows versions.
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