Endress+Hauser memo-graph Version II Betriebsanleitung Seite 72

Function
Description
Type of control input
70
Activating the input releases the preset function. The digital inputs are "active high",
this means that the selected action happens when the control is connected to
+12...+30 V DC. See "Connections/terminal layout".
Description of the function for this input or measurement point name.
10 characters.
Only when used as a control input: When active releases the allocated control
function.
"Setup lock": So long as the control input is active the set up push button is out of
operation. The preset parameters can not be displayed or changed until the control
input is once again free.
"Display text": The preset text is displayed in a text window so long as the input is
active. Both text lines are displayed in the window if both "Text, part 1" and "Text, part
2" are filled out.
Tip: this can be used as a short process message for the front end operator.
"Display group": The display switches to the group selected when the input is active
(signal from low to high).
"Darken display": So long as the input is active the display rear illumination is
switched off. All other recorder features (e.g. storage, alarm monitor etc...) remain.
"Time synchronisation": When the input is active (signal from low to high) the internal
second counter is reset to zero. If at this point the seconds are between 0 and 29 the
minute remains unchanged. If the seconds are between 30 and 59 the minute is
increased by one.
Tip: Use this function in combination with a master clock. All units used in this mode
run synchronous. This means that signals recorded on different units can be
compared with each other.
"External intermediate analysis": The analysis of this measurement point into min,
max. and average values does not occur in defined time cycles. Here the signals are
analysed so long as the control input is active. Once the input is no longer active the
result of the analysis becomes available (see "Analysis" in normal operation). Is useful
for example in batch operations - the min, max. and average values are available at
the end of the batch.