4 - 28 VM600 MPS hardware manual (standard version) MAMPS-HW/E
Edition 17 - February 2018
Operation of LEDs on MPC4 panel
MPC4 / IOC4T CARD PAIR
Yellow blinking
Note: Applies to dual-channel processing only.
When there is an active dual-channel processing alarm, the status
indicator LED for both channels will blink yellow at the same time.
For Alert level alarms configured as not latched: indicates that
a signal is below the lower Alert level (A) or above the upper
Alert level (A+). That is, there is a currently active processing alarm.
For Alert level alarms configured as latched: indicates that
a signal was below the lower Alert level (A) or above the upper
Alert level (A+) and was latched but has not yet been reset, or that a
signal is below the lower Alert level or above the upper Alert level. That
is, either there was a previously active processing alarm that has not
been reset or there is a currently active processing alarm.
Yellow (continuous)
Note: Applies to single-channel processing only.
For Alert level alarms configured as not latched: indicates that
a signal is below the lower Alert level (A) or above the upper
Alert level (A+). That is, there is a currently active processing alarm.
For Alert level alarms configured as latched: indicates that
a signal was below the lower Alert level (A) or above the upper
Alert level (A+) and was latched but has not yet been reset, or that a
signal is below the lower Alert level or above the upper Alert level.
That is, either there was a previously active processing alarm that has
not been reset or there is a currently active processing alarm.
Green (continuous)
Normal channel operation – channel is configured and signal input is
valid (not exceeding lower or upper “OK Levels”). That is, there are no
active single-channel processing or dual-channel processing alarms.
Table 4-2: Behaviour of status indicator LEDs
for individual measurement channels (continued)
Behaviour of
measurement channel
status LED
Event(s)
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