Siemens SIMATIC S5 Manual page 246

IP 266
7 Communication Between the CPU and the IP 266
The IP 266 can be plugged into slots 0 to 7 of the S5-100U programmable
controller. Eight bytes are reserved in both the process input (PII) and process
output (PIO) image for each slot. The CPU and the IP 266 use all eight bytes of the
PII and the PIO to interchange data. Please note that the IP 266 requires version
6ES5-100-8MA02, or a newer version, of the CPU 100.
In this manual, an interchange of data is referred to as a "frame". From the
STEP 5 point of view, there are two types of "frames":
Data interchange:
Data interchange:
Table 7-1. Module Address Assignments
PS CPU
0 1
64
Analog
to
addresses
71
The permissible address range is from 64 to 127. The IP 266 is addressed with byte-
oriented or word-oriented Load and Transfer statements, as are analog input or
analog output modules.
TQW88, TQW 90, TQW92 and TQW94
CPU
LIW88, LIW90, LIW92 and LIW94
Figure 7-1. Example of Data Interchange Between CPU and IP 266 (in slot 3)
EWA 4NEB 812 6057-02
Communication Between the CPU and the IP 266
PLC CPU IP 266 Output frame
IP 266 PLC CPU Input frame
SLOTS
2 3 4
72 80 88 96
to to to to
79 87 95 103
5 6 7 8
104 112 120 The slots from
8 up may not
to to to
be used
111 119 127
IP
266
9
7-1