Kontron CP381 - Manual (Page 36)

Functional Description CP381
Page 2 - 10 © 2002 PEP Modular Computers GmbH ID 24107, Rev. 01
2.5 Monitor and Control (M/C)
Monitor and Control functions are divided essentially into Pre-operation and Operation. Pre-op-
eration M/C deals with board configuration and system requirements. Operation M/C covers di-
rect operator interfaces.
2.5.1 Pre-Operation M/C
Pre-operation M/C is a direct function of the application and the system requirements. These
requirements dictate the digital input configuration as well as the overall system integration.
Digital input configuration is addressed in detail in chapters 4 and 5. These chapters provide
detailed information concerning input signal conditioning and environmental aspects which re-
late to the operation and performance of the CP381. Overall system integration and compli-
ance with its requirements is beyond the scope of this manual.
2.5.2 Operation M/C
The front panel of the board is equipped with two green LED’s whose status combinations pro-
vide information for the operator on the operational status of the boards. The following tables
describe the LED status combinations and the meanings of the modes
Table 2-4: System Status Indicators
LED State Description
Run
ON
The different LED status combinations have the following meanings:
Run Hit Description
Off Off Board is disabled
On Off Board is enabled and the modes (“Event-
hit”, “Compare-hit” and “Latch-hit”) are dis-
abled or no hit has occurred.
Off On Board is enabled and “Latch-hit” mode is en-
abled; a defined event has occurred and the
input will be captured.
On On Board is enabled and an “Event-hit” or
“Compare-hit” is detected, but not a “Latch-
hit”.
OFF
Hit
ON
OFF
Table 2-5: Function Modes of the CP381
Mode Description
Event hit The CP381 monitors the input ports and detects any change in their state:
- Whenever individual input channels are enabled they are monitored.
- The direction of the change-of-state may be set.
- A status register reports the detected events.
Latch hit In addition to standard event detection (i.e. event-hit) there is a latch mode extension.
This mode is used in the event that it is necessary to capture the inputs when a defined
event has occurred.
Compare hit It is possible to detect a complete input pattern automatically. The input vector is con-
tinuously compared with the content of the mask register. Single inputs may also be
individually masked out.