As soon as the module is supplied by the DC 24V power section supply, the measure-
ment is started and the counting of the energy counters is continued with the retentive
stored counter values. The measured values of all the measurands are stored in the
module with one record set ID DS-ID. The following must be observed:
n All measured values with the same DS-ID come from the same measurement and are
consistent.
n By specifying the DS-ID you can address the individual measured values of the same
measurement.
n The DS-ID covers the values 1 ... 15.
n To refresh the measured values the DS-ID is to be incremented by 1. The value 15
must be followed by 1.
n If the DS-ID is incremented and there is still no new value available, the current value
is returned. Here the energy measurement module reports an error.
n DS-ID = 0 - Auto increment mode
– With DS-ID = 0 there is a request with auto increment mode. Here the module
always returns the current measured value. As soon as a new measured value is
available, here the DS-ID is incremented by one within the values 1 ... 15. If there
is no new measured value available, the DS-ID is not changed. Here the energy
measurement module reports an error.
n The uniqueness of a measured value always consists of the ID of the measurand and
the DS-ID.
In the module you can combine some measurands to one data package (Frame), which
is transferred in one step. One data package consists of 12byte user data. Considering
the data length of 12 bytes, you can define the content of a frame by specifying the ID of
the measurands. Up to 256 frames may be configured (Frame 0 ... Frame 255). The fol-
lowing must be observed:
n The definition of Frame 1 to Frame 255 happens by the command Set_Frame. .
n Frame 0 with the corresponding measurands can exclusively be specified by the par-
ametrization.
n With telegram type Zero Frame the data package of Frame 0 can be accessed. After
the start-up of the module there are automatic Zero Frame requests as long as the
process data communication comes from the head module.
When defining frames by means of ‘Set Frame’ , via the FR-ID these are assigned to a
number between 0 ... 255. By specifying theFR-ID you can request the corresponding
frame.
In the following the data types are listed, which are used in the module. The length is to
be considered particularly by the definition of Frames.
Data type Length in byte Description
UINT_8 1 Integer 8bit
UINT_16 2 Integer 16bit
UINT_32 4 Integer 32bit
INT_8 1 Signed integer 8bit
INT_16 2 Signed integer 16bit
INT_32 4 Signed integer 32bit
FLOAT 4 32bit floating point IEEE 754
DS-ID
Frame
FR-ID
Data type
VIPA SPEED7
Device Specific
Energy Measurement > Overview
HB00 | OPL_SP7 | Operation list | en | 18-30 265
To Next Page
Loading...
