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2.3

Application Layer

2.3.1

Transmission Mode For Application Data

Mode 1 (least significant octet first), as defined in 4.10 of IEC 60870-5-4, is used exclusively in this

companion standard.

2.3.2

Common Address of ASDU

One Common Address of ASDU (identical with station address)

More than one Common Address of ASDU

2.3.3

Selection of Standard Information Numbers In Monitor Direction

2.3.3.1

System Functions In Monitor Direction

INF

Semantics

<0>

End of general interrogation

<0>

Time synchronization

<2>

Reset FCB

<3>

Reset CU

<4>

Start/restart

<5>

Power on

2.3.3.2

Status Indications In Monitor Direction

INF

Semantics

<19>

LED reset

<20>

Monitor direction blocked

<21>

Test mode

<22>

Local parameter setting

<23>

Characteristic 1

<24>

Characteristic 2

<25>

Characteristic 3

<26>

Characteristic 4

<27>

Auxiliary input 1

<28>

Auxiliary input 2

<29>

Auxiliary input 3

<30>

Auxiliary input 4

7VU68x Redundant T103 Bus mapping

C53000-L2540-C558-1

IEC 60870-5-103 Interoperability