Address Space; Isochronous Mode - Siemens SIMATIC S7-1500/ET 200МР Manual

4.1.4

Address space

Address space of the technology module
Table 4- 4
Size per counting channel
Total size
The control and feedback interface is compatible with manual operation (Page 37) and is
operated by the instruction High_Speed_Counter.
4.1.5

Isochronous mode

The technology module supports the "Isochronous mode" system function. This system
function enables counter values and measured values to be acquired in a defined system
cycle.
In isochronous mode, the cycle of the user program, the transmission of the input signals and
processing in the technology module are synchronized. The output signals switch
immediately if the relevant comparison condition is met. A change in the state of a digital
input immediately affects the planned reaction of the technology module.
For clock synchronization in this operating mode, use an OB of the type "Synchronous Cycle"
(such as OB61). The High_Speed_Counter instruction is called in the assigned OB.
The update time for the measured value is synchronized with the system cycle in a suitable
ratio and, if necessary, adapted in length. If you set "0", the measured value is updated once
per system cycle.
Data processing
The data that was transmitted to the technology module in the current bus cycle via the
control interface takes effect when it is processed in the internal technology module cycle. At
the time the input data is read in (T
status bits are acquired and made available in the feedback interface for retrieval in the
current bus cycle.
Technology module TM Count 2x24V (6ES7550-1AA01-0AB0)
Equipment Manual, 12/2020, A5E31870371-AC
4.1 Operating with "Counting and measurement" technology object
Size of input and output addresses of the TM Count 2x24V when operating with "Count-
ing and measurement" technology object
Inputs
16 bytes
32 bytes
), the counter value and the measured value as well as
i
Configuring/address space
Outputs
12 bytes
24 bytes
29