Specifications

Danish Interpretation Systems Technical Specifications

Printed in Denmark

Data 1, Data 2 and Data 3 are the actual data bytes to send to the CU. Typically the function to be

executed is defined by Message Group + Data 1 while Data 2 and Data 3 are the parameters top the

function. In the case that not all of the data bytes are needed the rest are set to 0.

3.4.4 Receive Control Message from CU (CU 



 external)

This message encapsulates DCS 6000 commands sent from the CU to external control unit. The format

of the message is

MSB addr and LSB addr are the least respectively the most significant bytes of the address of the

receiver of the message. The external controller should only take note of the message if the address is

its own or the group address for a group it is currently a member of. See section 4.2 for a list of

relevant group addresses.

Message Group is the message group of the message sent by the CU. The message groups are defined

in section 4.5.

Len is the number of data send (N)

Data 1 to Data N are the data bytes sent in the message.

3.5 Building a control message – step by step

When a message is to be transferred via the serial connection, the follow steps are done in the order

shown below:

1. The Message Type and contents is decided.

2. ID is added.

<ID>

3. CRC check sum is added.

<CRC>

4. Encoding of the message is done with respect to escape characters

5. Finally, START and STOP delimiters are added.

<START>

<STOP>