Siemens simatic hmi op27 Equipment Manual page 166

When switches S3 and S4 are set in the OFF position, the digital outputs are
permanently assigned to keys F1 to F12:
Key F1 sets output DO 1
Key F2 sets output DO 2
Key F12 sets output DO 12.
OP27, OP37 Equipment Manual
Release 05/99
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OFF
S3 F1/F3/F5/F7
act as direct keys
F2/F4/F6/F8
S4
act as direct keys
S3 F9/F11
act as direct keys
F10/F12
S4
act as direct keys
The function key assignment in this table refers to the default key assignment without insertion
strips.
D
D
ON
DO 1/DO 3/DO 5/DO 7
controlled via software
DO 2/DO 4/DO 6/DO 8
controlled via software
DO 9/DO 11/DO 13/DO 15
controlled via software
DO 10/DO 12/DO 14/DO 16
controlled via software
Options
On
OP27,
OP37
OP27,
OP37
OP37
OP37
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