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S5-100U
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).
1
2
L+
M
24 V DC
(4/8)
QI
Figure 11-10. Load Connection via a Two-Wire Circuit (6ES5 470-8MB11 or 6ES5 470-8MC11)
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
Bit number
Analog value represent.
Key:
S
X
11-20
3
5
7
4
6
8
(6/10)
Terminal assignment
M
Terminals
ANA
R
L
High Byte
7
6
5
4
10
9
8
S
2
2
2
sign bit
irrelevant bits
9
Key:
QI:
10
M
:
ANA
3
2
1
0
7
7
6
5
4
3
2
2
2
2
2
Analog Value Processing
Analog output "Current"
Chassis ground terminal
of the analog unit
Low Byte
6
5
4
3
2
2
1
0
2
2
2
X
X
EWA 4NEB 812 6120-02
1
0
X
X
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