User manual

Page 33
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
ELR/ELM 5000 Series
3.5 Remote control
3.5.1 General
Remote control is possible via the built-in Ethernet/LAN port. If remote control of the device is going to be used,
i.e. settings status or values, it generally requires to switch the device into remote control mode by a dedicated
command via the digital interface. Remote control can, however, be inhibited by a setting in the device menu or
be aborted on the device’s HMI. This is a safety feature which allows the user to interact with the device in case
of an emergency.
For status monitoring and reading of values, activating remote control is not required. Reading is always possible
and allowed.
3.5.2 Controls locations
Control locations are those locations from where the device is control. Essentially there are two: at the device
(manualcontrol)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 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” (see “„3.4.3.2. Menu “Gen-
eral Settings”“). In inhibited condition, the status “Local” will be displayed in the status area. Activating local mode
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 it is immediately terminated and in order to
continue remote control once “Local” is no longer active, it has to be reactivated from the control device (PC)
• If manual control is active, i.e. no remote control, an attempt to switch to remote control with the corresponding
command is refused by the device and replied with an error message.