User manual

Page 19
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
EL 3000 B Series
1.9.5.4 Resolution of the displayed values
Inthedisplay,setvaluescanbeadjustedwithaxedstepwidth.Thenumberofdecimalplacesdependsonthe
device model. The values have 4 or 5 digits. Actual and set values always have the same number of digits.
Adjustment resolution and number of digits of set values in the display:
Voltage,
OVP, U-min, U-max
Current,
OCP, I-min, I-max
Power,
OPP, P-max
Resistance,
R-max
Nominal
Digits
Step
width
Nominal
Digits
Step
width
Nominal
Digits
Step
width
Nominal
Digits
Step
width
80 V 4 0.01 V 10 A 5 0.001 A 400 W 4 0.1 W 40Ω 5 0.001Ω
200 V 5 0.01 V 25 A 5 0.001 A 340Ω 5 0.01Ω
500 V 4 0.1 V 60 A 4 0.1 A 2000Ω 5 0.1Ω
1.9.6 USB port (optional)
On the rear side of the device there is a slot to install one out of three types of
optionallyavailable,user-retrottableinterfacecards.Alsoseesection1.9.4. All
three types feature an USB port.
TheUSBportisforcommunicationwiththedeviceandforrmwareupdates.The
USB cable (included with the interface card) can be used to connect the device
to a PC (USB 2.0 or 3.0). The driver is delivered on the included USB stick and
installs a virtual COM port. Details for remote control can be found on the web
site of Elektro-Automatik or also on the USB stick.
The device can be addressed via this port either using the international standard
ModBus RTU protocol or by SCPI language. The device recognises the message
protocol automatically.
When requesting remote control via the USB port it has no priority over any other
digital or analog interface and can, therefore, only be used alternatively to these.
However, monitoring is always available.
1.9.7 Ethernet port (optional)
On the rear side of the device there is a slot to install one out of three types of
optionallyavailable,user-retrottableinterfacecards.Alsoseesection1.9.4. One
of the types features an Ethernet/LAN port, plus an USB port.
The Ethernet port is for communication with the device in terms of remote control
or monitoring over longer distances than possible with USB. The user has basi-
cally two options of access:
1. A website (HTTP, port 80) which is accessible in a standard browser under
theIPorthehostnamegivenforthedevice.Thiswebsiteofferstoconguration
page for network parameters, as well as a input box for SCPI commands.
2. TCP/IP access via a freely selectable port (except 80 and other reserved ports).
The standard port for this device is 5025. Via TCP/IP and this port, communication
to the device can be established in most of the common programming languages.
Using the Ethernet port, the device can either be controlled by commands from
SCPI or ModBus RTU protocol, while automatically detecting the type of message.
The network setup can be done manually or by DHCP. The transmission speed
is set to “Auto negotiation” and means it can use 10MBit/s or 100MBit/s. 1GB/s
is not supported. Duplex mode is always full duplex.
When requesting remote control via the Ethernet port it has no priority over the USB port and can, therefore, only
be used alternatively to these. However, monitoring is always available.