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Description of the DP Functions, Data, and Error Codes

DP Base Programming Interface for CP 5613/CP 5614

C79000-G8976-C108-01

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4.5 Formats of the Slave Data

Order of the Slave Data

The order of the data corresponds to the configured input/output ports of the DP

slaves.

For example, the input ports of an ET 200B 16DI station are stored as follows: port

0 in the first byte, port 1 in the 2nd byte etc.

Format of Data Words

The following order is necessary for storing values in the word format (2-byte

numbers):

First, the high byte (lower order address) of the word is entered followed by the low

byte (higher order address), in other words in Motorola format.

Note 1

This order does not correspond to the format of processors belonging to the

80x86/Pentium family!

Note 2

Take into account any additional information from the vendor of the slaves your

user program should support.

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