APS 901-0101, Руководство пользователя

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15
RMC
SNMP:
Use SNMP and a Network Management System NMS.
The enterprise number is 11072 (IOTEC AB).
The RMC supports the system group in the MIB-II
“Objects”
sysDescr
sysObjectID sysServices sysName
sysUpTime sysContact sysLocation
The private MIB presently contains the following objects:
rmcTemp-1
Integer value in degrees Celsius of temperature 1.
rmcTemp-2
Integer value in degrees Celsius of temperature 2.
rmcTemp-3
Integer value in degrees Celsius of temperature 3.
rmcAnalog-4
Value 0 - 100% of the current signal 4 - 20 mA at analogue input 4.
rmcAlarmsExist
ALL-OK (0) or ALARMS-EXISTS (1). This can be seen as the sum of all alarms. You could
have your management system read this object periodically to see if everything is ok and if
not, check the main web page for a total overview.
rmcAlarm-1 -- rmcAlarm-8
Eight objects, one for each alarm channel, giving OK (0) or ALARM (1).
rmcOut-1 -- rmcOut-3
Status for the three potential-free outputs. Can also be set on or off by the NMS.
rmcTrapMessage
When an alarm trap is sent, this object holds the alarm text string which is appended to the
trap. In the MIB-file there are eight traps defined. The MIB-file can be downloaded from the
RMC-support homepage.
Supervision with the RMC using SNMP can be configured in several ways. A simple
configuration could be to set up the eight function channels and limit values in the RMC and
have your network management system read the single object
rmcAlarmsExist periodically
to see if everything is ok. Set up your NMS to give an alarm event if rmcAlarmsExist returns
1, indicating that something is abnormal. When this happens, just browse the main web page
in the RMC for a total overview and with its event list in English. You could also read the
analogue values separately and define the limit values in your NMS. This way you can have
all eight digital inputs for alarms and thus get a total of 12 monitored objects.
Maybe the most common method is to use the traps, one for each alarm channel.