Configuration / address space
4.2 Selecting the module versions
Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
30 Manual, 12/2015, A5E36061895-AA
The user data variant is switched with the next cycle.
Note
Information about user data changeover
The parameterized user data variant is set in the foll
owing cases:
A "0" is written in byte 0 in the output data of a user data variant.
Byte 0 in the output data of a user data variant contains an invalid value:
– Coding of the user data variant not available
or
Available address space is not sufficient for the selected user data variant.
Recommendations for selecting the module version
The following table shows which module version is suitable for a given purpose.
2 I / 2 Q
• Use of many AI Energy Meter
480VAC ST in an ET 200SP
or little address space is
available
• Read the measured values solely via the RDREC instruc-
tion from a measured value data record.
• Quality information about the measured values is always
available.
EE@Industry measu-
rement data profile
E0 / E1 / E2 / E3
• Cyclic measurement per
phase
• Supplied measured values in
accordance with the
EE@Industry measured data
profile
• Available measured values depend on the configured
measurement data profile.
• The user data are fixed and cannot be changed dynami-
cally. Alternatively, read the measured values acyclically
from a measured value data record via the RDREC in-
struction.
• No quality information
32 I / 12 Q
• Cyclic measurement per
phase
• Flexibility by switching prede-
fined user data variants
• Quality information about the measured values is always
available.
• Depending on the user data variant, you must convert
the measured values in the CPU to physical values using
the supplied scaling factor.
• One cycle elapses for each user data changeover.
Measured values from the next user data variant are thus
supplied with a slight time offset.
Alternatively, read the measured values acyclically from
a measured value data record via the RDREC instruc-
tion. Consistent measured values of a measuring cycle
• Cyclic measurement of up to
64 measured values configu-
rable
• Flexibility by switching prede-
fined user data variants
With GSD configuration
• 32 I / 12 Q
• 64 I / 12 Q
• 128 I / 12 Q
• 256 I / 12 Q