Meinberg VP100 20NET - Manual (Page 6)

Page 6 of 25 VP100/20NET
the two keys at the display's rear or the Message Editor program, it is necessary to set the display's
IP address, the sub-network's mask, the default gateway and the NTP server's IP address on the
occasion of the first turning on. These settings are of vital importance for successful programming of
messages and for time synchronization via the network.
When the communication between the display and the NTP server has been established, the
display's internal clock will become synchronized, and the dot appearing between the date and the
time of the day will disappear.
If there is a DHCP server provided in the network, all of the settings can be managed by the server
–
the DHCP client should be switched on in the menu (this is also the default setting). All the network
settings can be remotely controlled by Message Editor program (MED), which alone seeks for the all
displays connected to the local network. The message programming and time synchronization of the
display are not possible without prior proper network settings.
2.3 OUT connector, the connection diagrams
To the connector labeled OUT you can connect another VP100/20-type display (a version without a
network interface), provided it is set to a baud rate of 9600 and to the 8N1 data format. The
connection can be realized in two different ways:

using RS232: for short distances (of up to 15 m);

using 20-mA current loop: for longer distances between the two displays.
You can choose between these two connection alternatives by means of jumpers inside the display.
WARNING
Please make sure to unplug the device
before opening the enclosure!
In order to be able to manipulate the jumpers, it is necessary to open the enclosure: please unscrew
the four screws that hold the cover on its right side, pull out the cover, and pull out the plexiglas piece
and the small blocking plate. Unscrew the screws holding the displaying plates in their middle. Pull
out carefully the right displaying plate. Before pulling it out completely, you must unplug the flat cable
from its socket and interrupt pull apart the contacts of the power supply cable. As a result, the
jumpers on the microcontroller board become accessible. After setting them appropriately, close the
enclosure, proceeding in the reverse order.