Specifications

2 S7-1200/1500 Innovations

2.6 Optimized blocks

Programming Guideline for S7-1200/1500

V1.2, Entry ID: 81318674

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2.6.5 Communication with optimized data

The interface (CPU, CM) transfers the data as they are arranged (no matter if

optimized or not).

Figure 2-11: CPU-CPU communication

Send CPU Receive CPU

Compatible

data transfer

(byte stream)

Receive data can be:

• optimized

• not optimized

• Tag (any type)

• Buffer (byte array)

Send data can be:

• optimized

• not optimized

• Tag (any type)

• Buffer (byte array)

B1 32 39 4F 6D 7A … FF0A

Example

 A tag with data type PLC (data record) is to be transferred to a CPU.

 In the send CPU, the tag is interconnected as actual parameter with the

communication block (TSEND_C).

 In the receive CPU, the receive data are assigned to a tag of the same type.

 In this case, it is possible to symbolically continue to work directly with the

received data.

Note

Any tags or data blocks (derived from PLC data types) can be used as data

records.

Note

It is also possible that the send and receive data are not defined identically:

Send data Receive data

optimized --> not optimized

not optimized --> optimized