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MCT-CM
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Once the system has been configured and tested, prior to shipment, the OEM can then access the configurator
once more and change the
“# of Alarms” field to a value of two. Since the field is now set to two, only the first
two alarms will be accessible from the Setup menu, i.e., alarms 1 and 2, the alarms for the end user. Alarms 3
- 12, the OEM alarms, are now hidden and cannot be accessed by the end user.
If the “# of Alarms for User SP Access” is also set to 2, the user will only be able to adjust the alarm set points
for alarms 1 and 2 from the Overview screen. If the field is set to 5 for example, the first three OEM alarms,
alarms 3, 4 and 5, will also have their alarm set points accessible by the user on the Overview screen. This
protects the OEM configuration of the alarm, but still allows the user to adjust the alarm set points to vary when
the alarm condition occurs.
The alarm configurations are then protected and the alarms will operate in the background as set by the OEM.
See section
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nfiguring the alarms for operation.
4.1.5 Setting the Number of Digital Inputs
The # of Digital In field sets the number of digital inputs that will be accessible in the MCT
runtime application’s
“Offline\Setup\IO” menu. The digital inputs provide various control functions such as alarming, remote program
start/stop, digital output control, etc. The base MCT system provides 8 digital inputs on the CPU, and can be
expanded up to a maximum of 16 digital inputs with the addition of an optional digital input card.
If the maximum number of digital inputs is set to zero, the Digital Inputs selection under the Offline\Setup\IO
menu in the runtime application will be hidden, regardless of the number of digital inputs physically attached to
the system. This provides the OEM with a means of protecting the inputs from accidental changes that may
occur if the end user accesses them. It also provides a means for offering the end user digital inputs that they
can set up for their own use, while hiding inputs specifically configured for proper system operation that the
user is not to have access to.
4.1.5.1 Protected Digital Input Example
Four digital inputs are to be provided to the end user while 12 inputs are set up at the factory and are used
specifically by the OEM so they are not to be altered. In order to get a total of 16 inputs, the optional 8 point
digital input card is attached to the system.
In order to set up the OEM digital inputs, the
“# of Digital In” field must first be set to 16. This allows all 16
inputs to be accessed from the Offline\Setup\IO menu in the runtime application. The OEM can then set up
digital inputs 5 - 16 while leaving 1 - 4 available for the end user. Once the system has been configured and
tested, prior to shipment, the OEM can then access the configurator once more and change the ‘# of Digital In’
field to a value of four.
Since the field is now set to four, only the first four digital inputs will be accessible from the Offline\Setup\IO
menu, i.e., inputs 1 - 4, the digital inputs for the end user. Digital inputs 5 - 16, the OEM inputs, are now hidden
and cannot be accessed by the end user. The digital input configuration is then protected and the digital inputs
will operate in the background as set by the OEM.
NOTE: See section 10.7 Digital Inputs for information on configuring the digital inputs for operation.
4.1.6 Setting the Number of Digital Outputs
The # of Digital Out field sets the number of digital outputs that will be accessible in the MCT runtime
application’s ‘Offline\Setup\IO’ menu. The digital outputs provide various control functions such as system
events, audible alarm, remote fault contact, automatic program status indication, etc. The base MCT system
provides 8 digital outputs on the CPU and can be expanded up to a maximum of 32 digital outputs with the
addition of an optional digital output cards.