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DP module 7: Command channel
Module 7, command 8:
read LAS (list of active slaves)
8-10
Example: Read LAS (list of active slaves) of slave group 1 on master 1
Request of DP master
Byte no.
Value [hex]
Description
1
08
08 = command 8
2 42
(slave no.
2
)
→
group 1
+ (master no.
1 * 64
)
+ (32, if B slave)
= 66
dec
=
42
hex
3
00
not used *)
4
00
not used *)
Response from controllere
Byte no.
Value [hex]
Description
1
08
copy of the request
2
42
copy of the request
3
03
hex
=
00000011
bin
→
table page
group 1:
slave 8(A) is active
slave 9(A) is active
4
FE
hex
=
11111110
bin
→
table page
group 1:
slaves 1(A) to 7(A) are active
*)
IMPORTANT:
For the query read only the required bytes. Unused bytes can contain information of
previous queries.
Summary of Contents for Ecomat 300 AC1355
Page 8: ...8 15 Terms abbreviations 15 1 16 Index 16 1 ...
Page 12: ...On this manual Overview where is what 1 4 ...
Page 14: ...Safety instructions Functions and features 2 2 ...
Page 16: ...System requirements Required accessories 3 2 ...
Page 18: ...Getting started Set up Profibus DPV1 4 2 ...
Page 24: ...Menu Main menu Fieldbus Setup 6 4 ...
Page 52: ...Set up Finish set up 7 28 ...
Page 238: ...Technical data Profibus DP interface 13 2 ...
Page 246: ...Terms abbreviations 15 6 ...