MSA SUPREMA - Page 80

REV 0, June 2005Page 80
Operation Manual SUPREMA
4. Operation of the System
is closed with the [OK] button.
If the system has a radio controlled clock available, date and time can only read, not change.
PC Time
Field type: Button
Press this button to enter the date/time of the PC on which the operating program is carried out
as preliminary settings for the date/time fields described above. But the values do not become
valid until the menu is closed with the [OK] button.
If the system has a radio controlled clock, this button cannot be pressed.
Password/Confirmation:
Field type: text
The password for authorisation to change parameter data can be changed by entering up to 8
characters. The password must be at least four characters long and can include any character
in the ANSI character set. Upper and lower case letters are recognised as different.
To remove password protection completely, the password can be deleted by entering only
spaces. Authorisation can then be obtained only with the key switch. If no key switch is available,
deleting the password will permit authorisation to everyone. In this case, an additional safety
message will appear with the warning that the system will be open to unsecured modification
access.
To guard against typing errors, the new password must be entered identically, two times, before
it becomes valid.
Signal if inhibited
Field type: Selection
If a MAO-module is used to log up the sensor signals external, there are three different ways of
analogue signal behaviour for inhibited inputs selectable.
• pass: The received measurement values are sent on.
• hold: The last measured value before inhibiting occurred is retained.
• maintain: The signal goes to the maintenance level (3 mA).
The requests of EN 50271 concerning the signaling of exta conditions at the analog
outputs is comply only if the function Maintain is setted.
The Setting in this field is essential for all latching measuring points in the whole
system.
OK
Field type: Button
Press this button to accept the settings entered. After the button is pressed, the parameters are
immediately checked to see if they valid. If the parameters are valid, they become part of the
system’s parameter set. If they are not valid, a warning appears.
Cancel
Field type: Button
Press this button to cancel the settings entered.