Technical data

11.8.2 Function of the Control Commands - Freeze and Unfreeze
Freeze
When the control command "Freeze" is received, the current statuses of the
inputs are read in by the DP slave and frozen.
The frozen input data are transferred to the L2-DP master during cyclic
transfer until the next "Freeze" control command or the control command
"Unfreeze" is received.
Unfreeze
Cancels the function of the control command "Freeze".
L2-DP master L2-DP bus DP slave
Inputs
I data info
Control command "Freeze"
Control command "Unfreeze"
I data info
I data info
I data info
Control command "Freeze"
I data info
10
10
10
01
00
01
10
00
11
00
0
1
01
Fig. 11.38 Function of the Control Commands - Freeze and Unfreeze
Distributed I/Os (DP) B89060/02
Volume 1 11 - 68