User manual

Page 31
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSI 5000 A Series
3.5 Remote control
3.5.1 General
Remote control is principally possible via any of the built-in interface ports (USB, Ethernet/LAN, analog). Important
here is that only the analog or one digital interface can be in control. It means that if, for example, an attempt were
to be made to switch to remote control via the digital interface whilst analog remote control is active (pin Remote
= LOW) the device would report an error at the digital interface. In the opposite direction a switch-over via pin
Remote would be ignored. In both cases, however, status monitoring and reading of values are always possible.
3.5.2 Control locations
Control locations are those locations from where the device is controlled. Essentially there are two: at the device
(manualoperation)andoutside(remotecontrol).Thefollowinglocationsaredened:
Displayed location Description
- If neither of the other locations is displayed then manual control is active and access from
the digital interface is allowed. This control location is not explicitly displayed
Remote Remote control via digital interface is active
Local Remote control is locked, only manual operation is allowed.
By using button Local, remote control may be allowed or inhibited
resp. aborted (pushing the button >3 seconds). In inhibited condition
the status “Local” will be displayed (lower row) of the display. See
example screenshot to the right.
Activating the inhibit can be useful if the device is remotely controlled
by software or some electronic device, but it is required to make
adjustments at the device or deal with emergency, which would not
be possible remotely.
Activating condition “Local” causes the following:
• If remote control via the digital interface is active (“Remote”), then remote control is immediately terminated and
must be reactivated at the PC once “Local” is no longer active
• If remote control is via the analog interface is active (“Remote”), then remote operation is only interrupted until
remote control is allowed again, because pin “Remote” continues to signal “remote control = on”. Exception: if
the level of pin “Remote” is changed to HIGH during the “Local” phase
3.5.3 Remote control via digital interface
3.5.3.1 General
Thedigitalinterfacesrequirelittleornosetupforoperationandcanbedirectlyusedwiththeirdefaultconguration.
Allspecicsettingswillbepermanentlystored,ifaltered.
Via the digital interfaces, primarily the set values (voltage, current, power) and device conditions can be set and moni-
tored. Furthermore, various other functions are supported as described in separate programming documentation.
Changing to remote control will retain the last set values for the device until these are changed. Thus a simple
voltage control by setting a target value is possible without changing any other values.
3.5.3.2 Conguration of the Ethernet port
Default parameters of the Ethernet port are:
• IP: 192.168.0.2
• Port: 5025
• Gateway: 192.168.0.1
• Subnet mask: 255.255.255.0
• DHCP: off
• Domain: Workgroup
• Host name: Client