Configuration
4.18 Data points
CP 1243-8 IRC
136 Operating Instructions, 02/2018, C79000-G8976-C385-03
Format (memory
requirements)
Number of data
points per object
Integer with sign
(16 bits)
Mean value input Int I, M, DB 4 Mean04W_S
2)
1)
1)
1)
1)
1)
1)
Floating-point
number (32 bits)
Block of data
(4 .. 48 bytes)
ARRAY [1...12] of
DInt / UDInt /
DWord / Real
3)
2)
1)
1)
Only ST7-TIM as master station or node station
See below, section "1: Mirroring back"
3)
See below, section "2: Block of data"
The mirroring back function using the "Value monitoring" parameter can be configured for
the following data point types:
● Setpoint output
● Parameter output
The local values of the data points of this type can be monitored for changes and the
changes transferred to the master with the "Value monitoring" function.
A change to a local value can be caused by, for example, manual operator input on site.
To allow the value resulting from local events or interventions to be transferred to the master
station, a mirroring back channel is generated for the relevant data point with the "Value
monitoring" function via which the locally changed value is mirrored back.
Remember that to use the mirror back function, you need to interconnect the local values in
the controller with the relevant PLC tag of the data point.
With the ARRAY data type, blocks of data from contiguous memory areas up to a size of
4 .. 48 bytes can be transferred.
Compatible components of ARRAY are DInt, UDint, DWord or Real. The components within
an array must be of the same type.
For information on the format of the time stamp, see below .
To Next Page
Loading...
Need help?
General
