Siemens S5-100U - Analog Value Representation of Analog Output Modules

S5-100U Analog Value Processing
Figure 11-10 shows how to connect loads to the current outputs of the following modules.
• 470-8MB11 (2x±20 mA)
• 470-8MC11 (2x+4 to 20 mA).
Figure 11-10. Load Connection via a Two-Wire Circuit (6ES5 470-8MB11 or 6ES5 470-8MC11)
a a a a a a a a a a a a a a a a a a a a a a a
a
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a
a
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a
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a
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Terminal assignment
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a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
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a
a
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a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
Key:
QI: Analog output "Current"
M
ANA
: Chassis ground terminal
of the analog unit
a a a
a
a
a
a a a
1
a a a
a
a
a
a a a
3
a a a a a
a
a a a
a
a a a a a
10
a a a
a
a
a
a a a
7
a a a
a
a
a
a a a
9
a a a
a
a
a
a a a
2
a a a
a
a
a
a a a
4
a a a
a
a
a
a a a
6
a a a
a
a
a
a a a
8
a a a
a
a
a
a a a
5
a a a
a
a
a
a
a
a
a a a
M
a a a a a
a
a a a
a
a
a a a
a
a a a a a
L+
a a a a a a a a a a a
a
a a a a a a a a a
a
a
a a a a a a a a a
a
a a a a a a a a a a a
24 V DC
a a a a a a a
a
a a a a a
a
a
a a a a a
a
a
a a a a a
a
a a a a a a a
(4/8)
a a a a a a a a
a
a a a a a a
a
a
a a a a a a
a
a
a a a a a a
a
a a a a a a a a
(6/10)
a a a a
a
a a
a
a
a a
a
a a a a
QI
a a a a a
a
a a a
a
a
a a a
a
a
a a a
a
a a a a a
R
L
a a a a a a a
a
a a a a a
a
a
a a a a a
a
a a a a a a a
M
ANA
a a a a a a a a a a a
a
a a a a a a a a a
a
a
a a a a a a a a a
a
a a a a a a a a a a a
Terminals
11.5.2 Analog Value Representation of Analog Output Modules
Table 11-14 shows how the analog output value has to be stored in the process image output table
(PIQ).
Table 11-14. 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
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
X X X
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a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
Key: S sign bit
X irrelevant bits
Low Byte
11-20 EWA 4NEB 812 6120-02