Ritron DATAFLOW RTU Technical Manual page 48

8.3.4.2 The FAIL-SAFE STATE table controls the RTU outputs when the RTU detects a
loss of RF link. Because Example 2 has two entries in the SEND LIST, both FAIL-SAFE
states A & B are used. If RTU ID 1 detects a loss of RF link from RTU ID 2, outputs are
controlled according to FAIL-SAFE STATE A. If RTU ID 1 detects a loss of RF link from
RTU ID 3, outputs are controlled according to FAIL-SAFE STA TE B.
I/O CONFIG is Input/ Output control of the RTU displayed in the Programming
8.3.4.3
Software I/O confi
8.3.4.3.1 In Example 2, RTU ID 1, Input l and Input 2; RTU ID 2, Input 1 and RTU ID3,
Input l are configured to be inverted digital inputs.
8.3.4.3.2 In Example 2, all four outputs of RTU ID 1 are used, RTU ID 2, Digital Output 1 is
used, and RTU ID 3, Digital Output l is used. The initial condition - the state an output is
forced to upon power-on -- is set for all relays to be open and all analog outputs to be
forced to O scale.
8.3.4.3.3 In Example 2, FROM ID is the ID number of the transmitting RTU; FROM ID
numbers are listed in the following 2 charts:
8.3.4.3.4 FROM LOC is the number of the input controlling the output; FROM LOC numbers
are listed in the following chart:
Analnn Ornnut 1
Software/ Programm
Diattal Ou nut 1
Ana!nnQ
Diaital Q11
Analoao,
Diaital Qmnut 1
Diaital Q1 rrnut 1
Diaital 01
Analnn Outnut 2
( B-18)
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ration screen.
gu
EXAMPLE 2
FROM ID
RTU ID 1
(TransmittinQ RTU !Dl
�ut 1
nut 2
�ut2
RTUID2& FROMID
RTUID3
/Transmittina RTU IDl
FROMLOC
RTU ID 1 IControllina lnoutl
ut 2
ITT
(continued/
2
2
3
3
1
1
1
2
2