B&R Industries X20 System, Руководство пользователя

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X20 system modules • X20 electronics module communication • X20CS1013
X20 system User's Manual 3.10 1527
4.18.4.7 Register description
4.18.4.7.1 Function model 0 - Standard
Read Write Register Name Data type
Cyclic Acyclic Cyclic Acyclic
258 Dali_State UINT ●
263 Dali_RequestCounter USINT ●
261 Dali_AnswerCounter USINT ●
265 Dali_Answer USINT ●
257 Dali_Enable USINT ●
262 Dali_Control UINT ●
265 Dali_Address USINT ●
267 Dali_Command USINT ●
4.18.4.7.2 Function model 254 - Bus controller
Read Write Register Offset
1)
Name Data type
Cyclic Acyclic Cyclic Acyclic
258 0 Dali_State UINT ●
263 3 Dali_RequestCounter USINT ●
261 2 Dali_AnswerCounter USINT ●
265 4 Dali_Answer USINT ●
257 0 Dali_Enable USINT ●
262 2 Dali_Control UINT ●
265 4 Dali_Address USINT ●
267 5 Dali_Command USINT ●
1) The offset specifies the position of the register within the CAN object.
4.18.4.7.3 General information
DALI stands for Digital Addressable Lighting Interface and is mainly used to control lighting systems. The commu-
nication standard is intended for building automation systems and described in the IEC 62386 standard.
4.18.4.7.3.1 The DALI protocol
The DALI standard specifies bidirectional communication based on the "request and answer" principle. A DALI
network may contain multiple masters. The serial asynchronous interface transmits voltage signals at a transfer
rate of 1200 bits/s.
According to the DALI standard, up to 64 individual addresses can be assigned on the network. In addition, all
of the slaves in the network can be addressed via broadcast and group addresses. 16 different group addresses
can be assigned independently of the individual slave addresses. This makes it possible to send a command to
multiple slaves at the same time.