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Profibus dp 171, Dpread 171, Level1 data reading via profibus 171 – West Control Solutions KS98-1 User Manual

Page 171: Read level1 data via profibus 171, Profibus

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PROFIBUS

Max. 4 functions DPREAD and DPWRIT can be configured (blocks 1...4 or 11...14 ). Any combination of functions is pos -
sible. Any data can be used in the functions.

III-10.3

DPREAD ( read level1 data via PROFIBUS (No. 102) )

General

Block numbers 1...4. Any 6 analog process values (x1...x6) and any 16 digital process values (d1...d16) of the
engineerings are composed for scanning via a PROFIBUS data channel. Block number 1 provides the data for channel 1,
block number 2 provides the data for channel 2, etc.

The PROFIBUS module reads the data of two channels at intervals of 100 ms. The digital outputs indicate the
PROFIBUS status.

g

Further information on communication with PROFIBUS is given in the interface description (order no.: 9499 940 52711).

Inputs/outputs

Digital inputs:
d1 ... d8

Digital process values, which can be read via the PROFIBUS (status byte 1)

d9 ... d16

Digitale process values, which can be read via the PROFIBUS (status byte 2)

Digital outputs:
b-err

PROFIBUS status: 1 = bus access not successful

p-err

PROFIBUS status: 1 = faulty parameter setting

c-err

PROFIBUS status: 1 = faulty configuration

d-err

PROFIBUS status: 1 = no data communication

Analog inputs:
x1 ... x6

Analog process values, which can be read via the PROFIBUS

9499-040-82711

Communication

DPREAD ( read level1 data via PROFIBUS (No. 102) )

III-171

Interface

Statusbyte1

(0)

(1)

(2)
(3)
(4)
(5)
(6)
(7)

7 6 5 4 3 2 1 0

d8

d1

...

Statusbyte2

7 6 5 4 3 2 1 0

d16

d9

...

x1

.

.

.

.

.

x6

b-err
p-err
c-err
d-err