1MRS750881-MUM
REC 523
55
Remote Monitoring and Control Unit
Technical Reference Manual
NV type 83 = SNVT_state
The SNVT_state can be used to communicate the state of a set of 1 to 16 Boolean
values. Each bit indicates the state of a Boolean value with, for example, the
following interpretations:
The value field shows the current value of the digital inputs or outputs at the time of
reporting, or the last value reported from the concerned device.
The SNVT_state can be used to transfer the state of 1 to 16 digital inputs or it can
be used to set the state of 1 to 16 output bits or digital set-points.
The SNVT_state inputs can also be used for controlling purposes.
6.5.1.
LonMark Slave POD based network variables
(NV indexes 64...97)
The communication application works as an event receiver using the event filter
number 1, which is set with the Relay Setting Tool parameter
Event mask 1
. This
means that all application events generated within REC 523 and enabled by the
application-dependent filter 1, are received by the LonMark communication
application.
The events received by the LonMark application are processed in two alternative
ways:
• Events are converted into network variable data (analogue or digital) according
to the LonMark slave POD (Process Object Dictionary), which works as a
cross-coupling between REC 523 application events and LON network
variables
• Events not defined in the LonMark slave POD are converted to alarms
(SNVT_Alarm)
6.5.1.1.
LonMark POD
To be able to parametrize the LonMark POD, you need the manuals from the
CD-ROM Technical Descriptions of Functions (refer to Section 1.8. Related
documents). The POD is structured as presented in Table 6.5.1.1-1.
0
1
off
on
inactive
active
disabled
enabled
low
high
false
true
normal
alarm
Table 6.5.1.1-1
POD structure
Table
index
Application Id
(channel,
FblockId)
Event Mask1
(E32...E63)
Event Mask2
(E0...E31)
Output Network
variable name
Process data
object name
000
a
122
0
15
LM_STA_1
F122V001
001
b
200
0
34353347
LM_CNT_1
F200I001
