Technical data

Table Of Contents
Diagnostic Data
System Software for S7-300/400 System and Standard Functions - Volume 2/2
32-4
A5E00739858-01
32.3 Structure of Channel-Specific Diagnostic Data
Channel-Specific Errors
Starting at the byte immediately following the channel error vector, the channel-
specific errors are indicated for each channel of the module. The tables below
show the structure of channel-specific diagnostic data for the different channel
types. The bits have the following meaning:
1 = Error
0 = No error
Analog Input Channel
Diagnostic byte for an analog input channel:
Bit Meaning Remarks
0 Configuration/
parameter assignment error
Can be signaled by SFC 52 and EVENTN = W#16#8x50
1 Common mode error Can be signaled by SFC 52 and EVENTN = W#16#8x51
2 P short circuit Can be signaled by SFC 52 and EVENTN = W#16#8x52
3 M short circuit Can be signaled by SFC 52 and EVENTN = W#16#8x53
4 Wire break Can be signaled by SFC 52 and EVENTN = W#16#8x54
5 Reference channel error Can be signaled by SFC 52 and EVENTN = W#16#8x55
6 Current below measuring range Can be signaled by SFC 52 and EVENTN = W#16#8x56
7 Current above measuring range Can be signaled by SFC 52 and EVENTN = W#16#8x57
Analog Output Channel
Diagnostic byte for an analog output channel:
Bit Meaning Remarks
0 Configuration/
parameter assignment error
Can be signaled by SFC 52 and EVENTN = W#16#8x60
1 Common mode error Can be signaled by SFC 52 and EVENTN = W#16#8x61
2 P short circuit Can be signaled by SFC 52 and EVENTN = W#16#8x62
3 M short circuit Can be signaled by SFC 52 and EVENTN = W#16#8x63
4 Wire break Can be signaled by SFC 52 and EVENTN = W#16#8x64
5 0 Reserved
6 No load voltage Can be signaled by SFC 52 and EVENTN = W#16#8x66
7 0 Reserved