Siemens Multiplexer Mux_guide_v06 Instrukcja Użytkownika Pobierz pdf (Strona 27)

Multiplexer User's Guide

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Mux_guide_v06 Page 27 of 36 30.06.2004

Length field:

Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8

EA L1 L2 L3 L4 L5 L6 L7

EA bit: Extension bit.

In the last octet of the sequence the EA bit = 1, otherwise = 0.

If there is only one octet, EA bit = 1 is set.

L-bits: Number of value octets; the following L1 is the LSB, L7 the MSB.

Multiple commands can be sent in a single frame only.

4.3.7 Multiplexer close down (CLD)

Type field:

Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8

1 C/R 0 0 0 0 1 1

Length byte = 0, no value octet

4.3.8 Test command (Test)

The test command is intended to test the connection between MS and TE.

Type field:

Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8

1 C/R 0 0 0 1 0 0

The length byte indicates the number of test bytes sent in the value bytes. The responding

station should answer with exactly the same bit sequence. The test command is used for the

version control. For more detailed information see Chapter 5.

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