Siemens OP7 Equipment Manual page 23

LCD
High-contrast LC display with LED back-lighting. The following displays
can be configured:
Function keyboard
24 keys (F1 to F8 and K1 to K16) for calling freely configurable functions.
The two-color LEDs (red/green) embedded in keys K1 to K16 can be driven
by the PLC.
Softkeys
16 function keys (F1 to F8 and K1 to K8) can be used as function keys too.
Soft keys can be configured with functions which vary from screen to screen.
System keyboard
22 keys for calling universally valid, standard functions (keypad, arrow keys,
etc.).
Data buffer The OP7 operates without a battery and is therefore maintenance-free. Oper-
ating data are retained in a non-volatile state in the flash memory on the OP.
The message buffer is backed up for several hours after the power supply is
turned off.
The internal hardware clock has reserve power for several days after the
power supply is turned off.
The OP17 can be optionally upgraded with a lithium battery. The battery is
not supplied with OP as a standard component.
Interfaces
Fuse Maintenance-free electronic fuse.
Compatibility
The OP17 is upwards compatible with the OP15/C. All cabling can be con-
tinue to be used. Existing OP15/C configurations can be converted automati-
cally for the OP17 by means of the ProTool configuration software.
Equipment Manual OP7, OP17
Release 04/99
4 lines each of 20 characters; height of characters is 11 mm
8 lines each of 40 characters; height of characters is 6 mm.
1 x RS232/TTY active, for connecting to the PLC/computer/printer
1 x RS232/TTY passive, for connecting to the PLC/computer/printer
1 x RS422/485 for connecting to the PLC/computer
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