Communication
75
SAP 58 (Global_Control)
This SAP is used to send special commands addressed to a
single slave, a special group of slaves, or all slaves at once
(broadcast).
Global_Control
Type: Octet String - Length: 2
DU
Byte
Description
0 GC_Command
1 Group_Select
0 to 255. The value must match the Group Identification
number of SAP 61 (DU Byte 6).
Reserved
Unfreeze
Freeze
Clear Data
0 = Do not clear output
00xxxxx0
00 = No function
10 = Activated
x1 = Deactivated
MSB LSB
1 = Clear output
Un_Sync
Sync
00 = No function
10 = Activated
x1 = Deactivated
Reserved
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