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Function Modules
15.6.6 Addressing
The counter module is addressed like an analog module (see section 6.3).
•
The module may only be plugged into slots 0 to 7.
•
The address range extends from byte 64 to byte 127.
•
In both process image tables, eight bytes are reserved per slot and of these eight bytes only the
first four are used.
Slot Addressing
Slot
0
64
Address
to
PII/PIQ
71
Meaning of the Bytes of a Slot Address (Example: Slot 1)
Table 15-7. Meaning of the Address Bytes of a Slot Address (Example: Slot 1)
Byte
Byte
Number
Address
0
72
1
73
2
74
3
75
4 to 7
76 to 79
EWA 4NEB 812 6120-02
Table 15-6. Slot Addressing
1
2
72
80
to
to
79
87
Meaning in PII
Irrelevant
Diagnostic byte
High
byte
Low
byte
3
4
88
96
104
to
to
95
103
111
High
byte
Low
byte
High
byte
Actual value
Low
byte
Irrelevant
S5100U
5
6
112
120
to
to
119
127
Meaning in PIQ
Setpoint 1
Setpoint 2
7
to
15-39
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