RFL Communications 21 Sub-MUX Instrukcja Użytkownika Pobierz pdf (Strona 18)

RFL SMX3/40 Page 18 of 24 Issue 2.02

User Manual

07 May 2009

Example 2: Aggregate Concatenation with synchronised links (e.g. SCADA

network on two BT kilostream X21 links):

Set Aggregate Direction for A2 and C1 to X21 port, and for B1 and B2 to Both

ports. Transmit and Receive data is presented at all ports. Only possible on a well

disciplined system, where only one terminal transmits at once. This configuration

assumes that both X21 links are running on the same network master clock e.g.

BT Kilostream.

DIP Switch Settings for units A2, C1

8 7 6 5 4 3 2 1

SW1 * * * * * * * *

SW2 0 1 0 0 1 0 0 1

SW3 * * * * * * * *

SW4 * * * * * * * *

SW5 0 0 0 0 0 0 0 1

SW6 0 0 0 0 * * 1 *

* indicates setting not applicable to this setup

DIP Switch Settings for units B1, B2

8 7 6 5 4 3 2 1

SW1 * * * * * * * *

SW2 0 1 1 0 1 0 0 1

SW3 * * * * * * * *

SW4 * * * * * * * *

SW5 0 0 1 1 0 0 0 1

SW6 0 0 0 0 * * 1 *

* indicates setting not applicable to this setup

Substation A Substation B Substation C

BT X21 BT X21

Aggregate Concatenation

C1 B2B1A2

V24

Port 2

V24

Port 2

V24

Port 2

V24

Port 2

Aggregate channel: V24 port 2 on each unit is allocated to channel B, baud rate 2400

Example installation – SCADA network

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RFL Communications 21 Sub-MUX Instrukcja Użytkownika Strona 18