
MULTI GAUGE CONTROLLER
COMMUNICATION
. .
GROUNDING
The EIA standards suggest that both end of a screen should be connected with protective ground-
ing. When, however, using such a connection, take special care and make sure that the differences
of the local ground potentials are not suf icient to enable circulating current to low. They may
cause not only large values of common signals in the data line, which may result in communication
breakdown, but also overheating of the cable. In case of any doubts it is recommended to ground
the screen of conductors only in one point. The length of a grounding connection should be as short
as possible.
. REMOTE ENABLE MODE
In the
REMOTE ENABLE
mode changing the parameters through the touch panel is locked. It is only
possible to view the parameters on the screen and view the settings in the device setup menu. The
device in the remote control mode displays in the upper part of the window an information bar
with text:
”MG - REMOTE”
.
The remote control mode can be activated in the device only via software.
To enter the REMOTE mode via software use the
REMOTE ENABLE
option in the
COMMUNICATION
sub-menu. If Remote Enable
ON
is selected, then the device switches to the RC mode and stays in
this mode until switched again to the local mode by selecting the
OFF
option.
Communication in the software mode is carried out according to the following principles:
• At a given moment the device can be controlled only from one place (device panel or remote
computer with
MASTER
rights).
• After taking over the control by the
MASTER
device, return to the local control is locked from
the device menu (the
REMOTE ENABLE
position is greyed).
•
MASTER
has the right as long as it maintains communication with the device (pauses between
the frames are not longer than
s), or do not resigns from the rights to write: (address
;
data ield= ). See tab . .
• In the event of loss of communication between
MASTER
and the device for more than s the
REMOTE ENABLE
position becomes active and it is possible to return to the local control by
switching the
REMOTE ENABLE
position to
OFF
.
Figure . : Maintaining communication - sequence diagram
User manual rev.
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