Battery warning in S7-400

Hi,

You can use the

SFC RDSYSST


FUNCTION Batt_OK : BOOL
title='Battery OK check'
know_how_protect

VAR_TEMP
// temporäre Variablen
Busy : BOOL;
SZL_Header : STRUCT
Lenthdr : WORD;
N_DR : WORD;
END_STRUCT;
Dr : ARRAY [0..15] OF STRUCT
BIT0 : BOOL;
BIT1 : BOOL;
BIT2 : BOOL;
BIT3 : BOOL;
BIT4 : BOOL;
BIT5 : BOOL;
BIT6 : BOOL;
BIT7 : BOOL;

END_STRUCT;
Out : WORD;
END_VAR

Out := INT_TO_WORD(RDSYSST(REQ := true// IN: BOOL
,SZL_ID := w#16#0392 // IN: WORD
,INDEX := 0 // IN: WORD
,BUSY := Busy// OUT: BOOL
,SZL_HEADER := SZL_Header// OUT: STRUCT
,DR := Dr // OUT: ANY
)); // INT

Batt_OK := NOT DR[0].BIT0;

END_FUNCTION

0392 Status of the backup batteries in a rack/module rack of a CPU after at least one battery has ailed 0

0492 Status of the overall battery backup status of all racks/module racks of a CPU 0


good luck,

New question published by H045 is split to a separate thread with the subject Can we program this battery fault indication in Ladder language?.

Best regards
Jen_Moderator