Siemens SIRIUS 3RK3 - Page 304

3. Example of transmission with error because of incorrect CTT2 code
The third example below demonstrates the writing of a data set using data set DS3 "Command
interface: element accesses" when an unknown CTT2 code (1E
H
) has been rejected:





+

+
&77GDWD
&RPPDQG4W\
&77
%\WHV
6ODYH
$GGUHVV
&77
&RGH
'6
1XPEHU
'6
5HDG
OHQJWK
'6
:ULWH
OHQJWK
'6
%\WHV
&RPPDQGKHDGHU&77GDWD

+

+
[\
+
'
+

+
[\
+
352),1(7$6,QWHUIDFH
6WDWXVUXQQLQJ
6WDWXVUHDG\
6HH'6 '
+
6HH'6 '
+
6WDWXV
&RPSOHWHG
&77GDWD
&77GDWD
&77GDWD
&77
&RGH
'6
1XPEHU
'6
5HDG
'6
:ULWH
'6
%\WHV
'
+

+
&77
&RGH
&77
&RGH
(OHPHQWGLDJQRVWLFV
'6BU
'6BU
'6BZ
&
+
(
+
6HH
'6
&
+
(
+
6HH
'6
(OHPHQWGLDJQRVWLFV
① PLC
② AS-i master
③ MSS 3RK3 with AS-i interface
Diagnostics / service
7.6 Diagnosis using AS-Interface (CTT2 protocol)
SIRIUS 3RK3 Modular Safety System
304 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006