Technical data

Structure of the job field "send control command"
1st byte
2nd byte
3rd byte
4th byte
04 hex
Job type
Length of job field in bytes
Bit 7 = reserved = 0
Control
command
Group
identifier
02 hex acyclic synchronization job
03 hex cyclic synchronization job
Bit 6 = reserved = 0
Bit 5 = Sync
Bit 4 = Unsync
Bit 3 = Freeze
Bit 2 = Unfreeze
Bit 1 = not used = 0
Bit 0 = reserved = 0
Function table for the
bits Sync/Unsync
and Freeze/Unfreeze
As assigned with COM in the DP slave
parameter assignment or 00 Hex
as general broadcast frame
Fig. 11.40 Structure of the Job Field of "Send Control Command"
Distributed I/Os (DP) B89060/02
Volume 1 11 - 72