Diagnostics
5.2 Fault Diagnostics
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
45
Channel-Specific Diagnostics
As with the ET 200S, there are three bytes available for channel-specific diagnostics, starting
at byte 35. Up to 9 channel-specific diagnostic messages are possible per station. Channel-
specific diagnostics for fail-safe modules are structured as follows.
%\WH
%\WH
%\WH
%LWQR
1H[WFKDQQHOVSHFLILFGLDJQRVWLF
DVVLJQPHQWVDPHDV%\WHVWR
%WR%0RGXOHVORW
WKDWLVSURYLGLQJWKHFKDQQHOVSHFLILFGLDJQRVWLFV
)DXOWW\SHVHHWDEOHEHORZ
%LWQR
&RGHIRUFKDQQHOUHODWHGGLDJQRVWLFV
%WR%1XPEHURIFKDQQHOSURYLGLQJWKHGLDJQRVWLFV
%LWQR
)',)'2PRGXOH)'2PRGXOH30()SP
30()SS)',PRGXOHRU30')
&KDQQHO
%ELW
%ELW
%ELW
%E\WHV
%ZRUG
%ZRUGV
%,QSXWFKDQQHO)',PRGXOH)',)'2PRGXOH
%2XWSXWFKDQQHO)'2PRGXOH)',)'2PRGXOH30()SP30()SSRU30')
%,QSXWRXWSXWFKDQQHO
%\WH
WR
PD[E\WHV
Figure 5-1 Structure of Channel-Specific Diagnostics
Note
The module slot coding is contained in byte 35, bits 0 to 5. The following applies:
displayed number + 1 = module slot
(0 = slot 1; 1 = slot 2, and so forth)
Note
Channel-specific diagnostics data are always updated to the current diagnostic function in
the diagnostic message frame. Older, successive diagnostic functions are not deleted.
Remedy: Evaluate the valid, current length of the diagnostic message frame. To do this, use
the parameter RET_VAL of the SFC 13 in
STEP 7
.
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