Johnson Controls 300 Series Manual page 94

94 Network Control Module 300 Series Technical Bulletin
Table 31: Hardware Attribute Values
Value Description
IDLE This number represents the exponential weighted average of the NCM CPU idle time. A
value of 70% and higher yields the best performance.
FREEMEM This is the Acquired Memory parameter. This value fluctuates over time but should never
gradually go to zero.
N1RX This value represents the received message rate per minute.
N1TX This value represents the transmitted message rate per minute.
JCBTIME This value is the % Central Processing Unit (CPU) time used running the JCB Interpreter, a
measure of amount of GPL processes running. A value greater than 10% is considered
excessive.
N1RXERR
This value displays the counter for discarded corrupted N1 ARCNET messages. The counter
is reset on download.
IPRXERR
This value displays the counter for N1 Ethernet messages. The counter is reset on download.
STBYSTAT This number represents the status of the Standby NCM. 1 = responding; 2 = not responding.
N2APPS This NCM diagnostic data value displays the polls per second for the first N2 trunk supported
by the NCM. This diagnostic is supported at Metasys Release 10.01 and later.
N2ACPS This NCM diagnostic data value displays the commands per second for the first N2 trunk
supported by the NCM. This diagnostic is supported at Metasys Release 10.01 and later.
N2BPPS This NCM diagnostic data value displays the polls per second for the second N2 trunk
supported by the NCM. This diagnostic is supported at Metasys Release 10.01 and later.
N2BCPS This NCM diagnostic data value displays the commands per second for the second N2 trunk
supported by the NCM. This diagnostic is supported at Metasys Release 10.01 and later.
These values can be alarmed and trended. DDL, UNDDL, and GPL
support these AD objects.
NCM Inspection
Perform the following inspections to help determine if the unit is able
to continue operating at peak performance:
NCM – SIMM – NCM300s - Inspect the SIMM boards to ensure they
are still securely fastened in the sockets. It is possible that they are not
completely seated.
Metasys Release 9.01 and later performs NOVRAM mirroring, which
prevents NOVRAM corruption during a Power Fail. Order and install
NCM300 SIMM Version 6.02, part number NU-ROM101-1 to take
full advantage of the NOVRAM mirroring feature.
If the NCM is to be powered down for power supply inspection, the
SIMM boards may be considered for connector/socket cleaning. To
clean SIMM edge connectors, use contact cleaning wipes. Do not use
erasers to clean edge connectors.
NCM – Power Fail Test - Test ability to recover from power failures
by following the procedure described in the NCM Power Fail Test
section of this document.