S5-95F Analog Value Processing
Figure 11-6 shows how to connect loads to the current outputs of the module 470-8MB12
(2 x ±20 mA).
Figure 11-6. Load Connection via a Two-Wire Circuit (6ES5 470-8MB12)
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Key:
QI: Analog output "Current"
M
ANA
: Chassis ground terminal
of the analog unit
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11.5.2 Analog Value Representation of Analog Output Modules
Table 11-5 shows how the analog output value has to be stored in the process image output table
(PIQ).
Table 11-5. Representation of an Analog Output Value as a Bit Pattern
X
High Byte
7 6 5 4 3 2 1 0Bit number
Analog value represent.
7 6 5 4 3 2 1 0
S 2
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2
1
2
0
X X X
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Key: X irrelevant bits
Low Byte
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EWA 4NEB 812 6210-02
11-9