Product manual

Communication Between the CPU and the IP 266 IP 266
The IP 266 interchanges data with the programmable controller's CPU over the
100U bus. To make this possible, you must write operator commands to the
process output image (PIO). From here, these commands are forwarded to the
IP 266 once in each data cycle. A bit in byte 1 of the output frame prevents
multiple execution of identical job orders.
The data in the output frame is needed to operate the IP 266, providing the IP 266
with information on
• the mode
• the parameters and
• the operations to be carried out.
Data
from the IP 266 is forwarded to the PII in each firmware cycle (every 3.75 ms).
7.1 Output Frame (PLC CPU IP 266)
The allocation of the bytes in the output frame depends on which slot the IP 266
is plugged into in the PLC. Table 7-2 shows the allocation of the output bytes (QB)
to the current slot numbers.
Table 7-2. Addressing of the Output Frame
Slot
number
Byte in the output frame
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7
QB 65 QB 66 QB 67 QB 68 QB 69 QB 70QB 640
1
2
3
4
5
6
72
80
88
96
104
112
73
81
89
97
105
113
74
82
90
98
106
114
75
83
91
99
107
115
76
84
92
100
108
116
77
85
93
101
109
117
78
86
94
102
110
118
79
87
95
103
111
119
1271261251241231221211207
QB 71
7-2 EWA 4NEB 812 6057-02