The telegram structure, Structure of the telegrams – Efficient Networks Siemens Sinamics S120 User Manual
Page 350
Communication PROFIBUS DP/PROFINET IO
10.1 Communications according to PROFIdrive
Drive Functions
350
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
The telegram structure
The parameter p0978 contains the sequence of DOs that use a cyclic PZD exchange. A zero
delimits the DOs that do not exchange any PZDs.
If the value 255 is written to p0978, the drive unit emulates an empty drive object that is
visible to the PROFIdrive controller. This permits cyclic communication of a PROFIdrive
controller
● with unchanged configuration to drive units that have a different number of drive objects.
● with deactivated DOs without having to change the project.
Note
•
The following must apply to ensure conformity with the PROFIdrive profile:
– Interconnect PZD receive word 1 as control word 1 (STW1).
– Interconnect PZD send word 1 as status word 1 (STW1).
Use WORD format for PZD1.
•
One PZD = one word.
Only one of the interconnection parameters (p2051 or p2061) can have the value ≠ 0
for a PZD word.
•
Physical word and double word values are inserted in the telegram as referenced
variables.
p200x are relevant as reference values (telegram contents = 4000 hex or
4000 0000 hex for double words if the input variable has a value of p200x).
Structure of the telegrams
7HOHJUDP
$SSOFODVV
'6&
3='
3='
3='
3='
3='
3='
3='
3='
3='
3='
3='
3='
3='
3='
3='
&7:
67:
&7:
67:
&7:
67:
&7:
67:
&7:
67:
&7:
67:
&7:
67:
162//B$ 1,67B$
162//B% 1,67B% 162//B%
1,67B%
162//B%
1,67B%
162//B%
1,67B%
%/&.6(/ $&7%/&.
&7:
67:
67:
&7:
&7:
67:
'6&
&7:
67:
0$&7B6
3$&7B6
!
1,67B$B*/
,$$&7B6
162//B$
&7:
67:
&7:
67:
(B&7: *B67:
*B;,67
*B;,67
*B;,67
*B67:
*B&7: *B67:
*B&7:
*B;,67
*B;,67
*B;,67
162//B%
1,67B%
*B&7: *B67: *B&7: *B67:
*B;,67
;(55
.3&
*B;,67
*B&7:
*B;,67
*B67:
.3&
*B;,67
;(55
*B;,67
*B;,67
7HOHJUDPUHFHLYHGIURP
352),%86352),1(7
7HOHJUDPVHQWWR
352),%86352),1(7
!&DQEHLQWHUFRQQHFWHGLQDQ\ZD\ GHIDXOW 0(/'B1$085
&7:
67:
0',3RV
;,67B$
&7:
67:
0',9HO
%/&.6(/
$&7%/&.
0',$FF
0','HF
0',0RG
Figure 10-5 Overview of standard telegrams and process data