Communications - Johnson Controls FRICK QUANTUM HD Maintenance Manual

ACCESSING:
DESCRIPTION: This screen allows the technician to verify
and troubleshoot serial communications issues.
The following buttons are provided (refer to the Commu-
nications Manual (090.040-CS) for specifi c information
about these three tests):
• Test Comm1 - Comm2
• Test Comm2 - Comm3
• Test Comm 3 - Comm1
• Redetect I/O Comms - This selection provides
a method to detect all connected Analog and
Digital boards. For additional information about
this screen, refer to 090.040-CS (Communica-
tions Manual).
The following are some of the things that
can occur that would cause an I/O board to
stop communicating with the Quantum™,
QUANTUM™ HD COMPRESSOR CONTROL PANEL
MAINTENANCE
SERVICE - Communications

Communications

090.040-M (MAR 12)
and would require that you Redetect I/O
Comms:
• A board has been removed, and
power was turned on with the
board removed. You would need to
replace the board, re-power, and
then select [Redetect I/O Com-
ms].
• A board has failed in such a way
that it cannot properly communi-
cate with the Quantum™ HD.
• A failure with the communications
cable which is plugged into the end
of each board
If any of these things occur, a communica-
tions error shutdown will be issued until this
key is selected. You should always view the
About screen to see what has been detect-
ed.
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