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1MRS750881-MUM
6.4.1.
Remote Monitoring and Control Unit
Technical Reference Manual
In REC 523, the ABB-specific solution for substation communication is supported
by foreign messages. In short, the communication method consists of session control
(REC 523 can maintain up to 4 sessions), a sliding window protocol for application
acknowledgement and definition of data formats.
The REC 523 unit also supports explicit SPA messages which may be used for
parametrization purposes. This method is also defined in the LON Application
Guidelines document.
Network variable indexes of REC 523
Table 6.4.1-1
Network variable indexes
NV
Dir.
SNVT_Type
index
0...15
IN
SNVT_state
16...31
OUT SNVT_state
32... 47
IN
SNVT_state
48... 63
OUT SNVT_state
64
IN
SNVT_elapsed_tm
65
IN
SNVT_elapsed_tm
66
OUT SNVT_alarm
67
OUT SNVT_alarm
68... 77
OUT SNVT_state
78... 87
OUT SNVT_count_inc_f
88... 97
OUT nv_32bit_analog
100...
IN
SNVT_state
115
116...
OUT SNVT_state
131
SNVT
Object
Comments
number
Type
83
16 bit INT
Virtual IEC 61131 inputs
(Relay Configuration Tool def.
COMM_IN_1...16)
83
16 bit INT
Virtual IEC 61131 outputs
(Relay Configuration Tool def.
COMM_OUT_1...16)
83
16 bit INT
Virtual IEC 61131 inputs (Relay
Configuration Tool def.
COMM_IN_17...32)
83
16 bit INT
Virtual IEC 61131 outputs
(Relay Configuration Tool def.
COMM_OUT_17...32)
87
structure
Throttle input
(see description in text)
87
structure
Timeout input
(see description in text)
88
structure
Alarms to receiver 1
88
structure
Alarms to receiver 2
83
16 bit INT
User-definable outputs
LM_STA_x (generated from
internal process value types
1,2,3 or 16 bits)
52
IEEE754
User-definable outputs
float
LM_CNT_x (generated from
internal process value type
float)
252
32 bit INT
User-definable outputs
LM_ANA_x (generated from
internal process value type 32
bit (=any type))
83
16 bit INT
Virtual IEC 61131 inputs (Relay
Configuration Tool def.
COMM_IN_33...48)
83
16 bit INT
Virtual IEC 61131 outputs
(Relay Configuration Tool def.
COMM_OUT_33...48)
REC 523
53
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