Siemens SIMATIC HMI OP 77B Operating Instructions Manual page 23

Release 03/2004
Table 4-1 DIL switch setting positions
Communication
MPI/PPI
Standard cable
RS 422
PROFIBUS-DP/MPI
Switch
Operating Instructions (Compact) OP 77B
6AV6691-1EA01-0AB0
& R Q Q H F W L Q J W K H 2 3   %
Switch settings
4 3 2 1
PLC
ON
No RTS on connector
4 3 2 1
PLC
ON
4 3 2 1
ON
PLC
No RTS on connector
4 3 2 1
ON
RTS on Pin 9
(as programming unit)
4 3 2 1
ON
RTS on Pin 4
4 3 2 1
ON
ON
State on delivery
4–5