Siemens SIMOCODE pro System Manual page 184

Motor control
Mode selector
The S1/S2 mode selectors are used to switch between the operating modes
"Local 1", "Local 2", "Local 3" and "Remote/Automatic". The S1 and S2 plugs
must be connected to arbitrary sockets (e.g. device inputs, control bits from
PROFIBUS DP , etc.) for this.
The following table shows the operating modes, depending on the signal
status of the S1 and S2 mode selectors:
Input
S1
S2
Table 4-2: Operating modes depending on S1 and S2
The different operating modes for enabling the control stations can be used
to specify the switch authorizations for the individual control stations
• Local control station [LC]
• PLC/PCS [DP]
• PC [DPV1]
• Operator panel (OP)
Only the following are active:
• The operating mode set by the plugs S1 and S2 of the "Control Stations"
function block
• The releases selected on "Control Stations".
Example for a dynamic operating mode switching in relationship to time:
S1 0
S2 0
Key-operated
switch
Local 1
0
Fig. 4-5: Example - operating mode switching
4-6
Local 1 Local 2
0
0
1 1
1 0
Remote operation Manual operation
Remote Local 3
Operating mode
Local 3
0 1
1 0
1
1
Remote operation Key-operated
switch
Remote Local 1
GWA 4NEB 631 6050-22 DS 03
Remote/
Automatic
1
1
0
0
Time t
SIMOCODE pro