Novar NOVAR-1xxx NRC Operating Manual - page 17
Novar-NRC
KMB systems
17
3.3.3 Parameter 05 – Number of Processed Outputs (in I/O mode)
The parameter is relevant in I/O mode only (it is not displayed in RCC mode). It defines how many of
the unit outputs starting from O1 output will be used as remote controlled outputs.
As default, the parameter is preset to the maximum outputs of the unit type. If decreased other outputs
will stay unused.
In case of cascade of more units in the I/O mode, PFC outputs’ states starting from the first output not
processed by previous unit are copied to the next unit outputs starting from its output O1.
3.3.4 Parameter 06 – Daisy-Chain Communication Mode („Cascade“)
If more than one NRC86 units connected to a PFC all of the units but the last one must be set to the
daisy-chain communication mode (i.e. set to
1
11
1
).
This mode must be switched off at the last unit in the cascade , i.e. set to
0
00
0
.
3.3.5 Parameters 10, 11, 22 – Instrument Address, Communication Rate and
Communication Protocol
The address (parameter 10) of the first NRC86 unit cooperating with a Novar1xxx NRC PFC in remote
control mode must be set to value 200. In case of more NRC86 units in “cascade” every next unit
address must by higher by one than the previous unit address, i.e. 201, 202, etc.
The communication rate (parameter 11) must be set identically as the supervisory Novar1xxx NRC
PFC. It is recommended to use default value 9.6 kBd or, according local conditions ( cable length,
interference level, … ), it is possible to increase it if applicable. In the RCC mode the set value si not
critical, in the I/O mode the higher value can bring better performance.
Parameter 12, i.e. communication protocol, must be set to KMB protocol, i.e.
P0
P0
P0
P0
.
3.3.6 Parameter 20 – Alarm Status
This parameter value is driven by a NRC86 unit itself. If the Alarm LED-diode flashes, the cause of
the alarm can be identified by the parameter value :
•
E
EE
E
… indicates supervisory Novar1xxx NRC PFC in alarm state
•
C
CC
C
… indicates missing or incorrect commands from supervisory Novar1xxx NRC PFC (
probably communication link failure )
3.3.7 Parameter 21 – Instrument Failure Status
The unit carries out self-diagnostic tests in regular intervals during its operation. You can check the
diagnostics’ results in this parameter.
It shows
E-00
E-00
E-00
E-00
if no errors have occurred. If the value is other than zero, the unit has identified an
error. Such a condition does not necessarily mean the unit is out of operation — in such an event the
unit supplier must be contacted and told about the identification value of the type of error shown.
Using this value, a specialist will then decide about the method of solving the problem.