3 Commissioning
3.9 Configuring the analog expansion unit
Control Relay easy800
11/11 MN04902001Z-EN
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Processing analog input/output values
You access the now configured analog input/output values via marker words
(MW). The process image is provided in the marker words.
Marker configuration with operation on
800 standard
(from device version 02)
Table 9: Marker configuration using analog input/output values
￫
The parameters configured here are stored retentively and only
in the expansion unit, not in the easy800 standard.
This means: You must complete this configuration again when
exchanging a configurable expansion unit.
Analog value Input/Output
EASY406-DC-ME
EASY411-DC-ME
1. Analog input
MW93
MW89
2. Analog input
MW94
MW91
3. Analog input
–
MW93
4. Analog input
–
MW90
5. Analog input
–
MW92
6. Analog input
–
MW94
1. Analog output
MW95
MW95
2. Analog output
–
MW96
￫
A new analog expansion unit is factory set for all inputs/outputs
to be activated. All the assigned marker words are thus also
taken.
For your expansion unit only configure the analog inputs/outputs
that are actually required.
This has several advantages:
•
More free marker words for use in the program or in the
visualization.
•
Only relevant error messages, as otherwise an activated but
unconnected input will signal a fault such as a wire
breakage.
•
Shorter reaction times due to the faster data exchange
between easy800 standard and expansion unit.
