Siemens BT300 LonWorks, Руководство оператора

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Chapter 4 - Parameters and Menu Structure
I/O and Hardware (M5)
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Siemens Industry, Inc.
Siemens BT300 HVAC Drive DPD01809
Building Technologies 2016-06-07
Monitoring (M5.8.3.2)
The following monitoring values are available for the N2 fieldbus protocol:
Table 89: N2 Fieldbus Protocol Monitoring.
Menu Parameter ID Min Max Description
M5.8.3.2.1 Fieldbus Protocol Status 2399 Initializing Faulted Displays the current protocol status as follows:
0 = Initializing
1 = Stopped
2 = Operational
3 = Faulted
M5.8.3.2.2 Communication Status 2400 0.0 99.999 Displays the number of bad frames and good
messages in the following format:
xx.yyy where xx indicates the bad frames and yyy
indicates the good messages.
M5.8.3.2.3 Invalid Data 2041 Active if one or more of the fields in a fieldbus
packet contains a value that is out of the expected
range.
M5.8.3.2.4 Invalid Commands 2402 Displays the number of commands that are not
appropriate for the field or record.
M5.8.3.2.5 Command NACK 2403 Displays the number of negative acknowledgments
due to problems with the device, so the command
was ignored.
M5.8.3.2.6 Control Word 2402 Displays the control word in a bit coded format as
follows:
B0 = Start/Stop
B2 = Fault Reset
M5.8.3.2.7 Status Word 2405 Displays the status word in a bit coded format as
follows:
N2 Point Map
Analog Inputs (AI)
All analog inputs (AI) points have the following features:
● Support Change of State (COS) reporting based on high and low warning limits.
● Support Change of State (COS) reporting based on high and low alarm limits.
● Support Change of State (COS) reporting based on override status.
● Always considered reliable and never out of range.
● Writing alarm and warning limit values beyond the range that can be held by the drive’s internal variable will
result in having the limit replaced by the Invalid Float value even though the message is acknowledged. The
net results will be the inactivation of the alarm or warning (the same as if the original out of range value was
used).
● Overriding is supported from the standpoint that the “Override Active” bit will be set and the value reported to
the N2 network will be the overridden value. However, the value in the drive remains unchanged. Therefore,
the N2 system should be set up to prevent overriding AI point or have an alarm condition activated when an AI
point is overridden.
● Overriding an AI point with a value beyond the limit allowed by the drive’s internal variable will result in an
Invalid Data
error and the override status and value will remain unchanged.