Output Frame (Plc Cpu Ip 266) - Siemens SIMATIC S5 Manual

Communication Between the CPU and the 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 0 Byte 1
0 QB 64 QB 65
1 72
2 80
3 88
4 96
5 104 105
6 112 113
7 120 121
7-2
Byte in the output frame
Byte 2 Byte 3
QB 66 QB 67
73 74 75
81 82 83
89 90 91
97 98 99
106 107
114 115
122 123
Byte 4 Byte 5 Byte 6
QB 68 QB 69 QB 70
76 77 78
84 85 86
92 93 94
100 101 102
108 109 110
116 117 118
124 125 126
EWA 4NEB 812 6057-02
IP 266
Byte 7
QB 71
79
87
95
103
111
119
127