Siemens SIMATIC S5 Manual page 20

System Overview IP 266
Programmer port
The IP 266 can be serviced via a programmer connected over the programmer
port. To do this, you must use the COM 266 software package, which provides
menus and screen forms for initializing the IP 266. Screen forms are also used to
specify the modes and display current actual values.
PLC interface
Input and output blocks are used for IP 266 control via the programmable
controller's CPU and for forwarding return info from the IP 266 to the CPU. These
blocks must be initialized in a STEP 5 program. Positions, mode numbers and the
like can be entered using, for example, numerical setters. The values are
forwarded in the process input and output images.
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EWA 4NEB 812 6057-02