Syntax Of The Data Point Names; Process Image, Type Of Transmission, Event Classes, Triggers - Siemens CP 1243-7 LTE Operating Instructions Manual

Configuration
4.12 Data point configuration
Block of data (ARRAY)
With the ARRAY data type, contiguous memory areas up to a size of 64 bytes can be
transferred. The following S7 data types are compatible components of ARRAY:
● Byte, USInt (total of up to 64 per data block)
● Char (total of up to 64 per block of data) - CP as of firmware version 2.1.77
● Int, UInt, Word (total of up to 32 per data block)
● DInt, UDInt, DWord (total of up to 16 per data block)
If the array is modified later, the data point must be recreated.
Format of the time stamp
Time stamps are output by the OPC server applications in UTC format (48 bits) and contain
milliseconds.
4.12.3

Syntax of the data point names

Character set for data point names
When you create a data point, a preset name "DataPoint_n" is adopted. In the data point
table and in the "General" tab of the data point you can change the name of the data point.
When assigning names only ASCII characters from the band 0x20 ... 0x7e (no. 32-126) may
be used with the exceptions listed below.
Forbidden characters:
● . ' [ ] / \ |
period, apostrophe, square brackets, slash, back slash, vertical line (pipe)
4.12.4

Process image, type of transmission, event classes, triggers

Saving the data point values
The values of data points are stored in the image memory of the CP and transferred only
when queried by the communications partner.
Events are also stored in the frame memory (send buffer) and can be transferred unsolicited.
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Operating Instructions, 04/2017, C79000-G8976-C381-03
CP 1243-7 LTE