8235 datasheet(13/22 Pages) PHOENIX

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IB IL RS UNI(-2MBD)-PAC

8235_en_01

PHOENIX CONTACT

Process data

The process image width of the terminal depends on the DIP

switch positions and comprises 7, 15 or 31 data words in input

and output direction respectively.

Figure 10

DIP switches

Example for the assignment of seven words of process data

The command is used to determine the function. The actually

transmitted data depends on the command.

Data length

Switch 2

Switch 1

Data width

User data when

transmitting and

reading

OFF

7 words

11 bytes

OFF

15 words

27 bytes

OFF

31 words

59 bytes

Reserved

For the assignment of the illustrated (byte.bit)

view to your INTERBUS control or computer

system, please refer to the

DB GB IBS SYS ADDRESS data sheet.

Word

01234

Byte in the Motor-

ola format

012345678

Byte in the Intel

format

103254769

OUT

K/P

DDD

DDDDDDDD

K/P

DDD

DDDDDDDD

K/P

Command/parameter

Control bits (OUT) or status bits (IN)

Length: Number of characters to be written

(OUT) or to be read (IN)

DData

The byte representation in the Motorola format,

also called Big Endian (high order byte at start-

ing address) corresponds to the INTERBUS

standard representation. All byte representa-

tions in the data sheet have this format.

The byte representation in the Intel format is

also called Little Endian (low order byte at start-

ing address).

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