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mPower 300 Series (Rev G)
5.5 Remote Control
5.5.1 General
Remote control is principally possible via any of the built-in interface ports USB, Ethernet/LAN or analog. Important here
is that only the analog or any 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 system
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.
5.5.2 Control locations
Control locations are those locations from where the system can be controlled. Essentially there are two: at the unit
(manual operation) and outside (remote control). The following locations are defined:
Displayed location Description
If neither of the other locations is displayed then manual control is active and access from the
analog or digital interfaces is allowed. This location is not explicitly displayed
Remote
Remote control via any interface is active
Local
Remote control is locked, only manual operation is allowed.
Remote control may be allowed or inhibited using the setting
“Allow remote control”
). In inhibited condition the status
“Local”
will be displayed in the status area (lower half, middle) of the display.
Activating the inhibit can be useful if the system 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be reactivated at the PC once “Local” is no longer active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
5.5.3 Remote control via a digital interface
5.5.3.1 Selecting an interface
The system supports built-in digital interfaces of USB and Ethernet. The USB interface requires no setup on the power
supply itself.
The Ethernet interface typically requires network setup (manual or DHCP), but can also be used with its default
parameters right from the start.
5.5.3.2 General
For the network port installation refer to
.
The digital interface require little or no setup for operation and can be directly used with their default configuration. All
specific settings will be permanently stored, but could also be reset to defaults with the setup menu item “
Reset
”.
