Siemens Simatic S7-300 Instrukcja Obsługi Pobierz pdf (Strona 106)

100

101

Digital modules

3.12 Digital input module SM 321; DI 16 x DC 24/125 V; with hardware and diagnostic interrupts (6ES7321-

7EH00-0AB0)

S7-300 Module data

106 Manual, 02/2013, A5E00105505-08

Hardware interrupt lost

A "Hardware interrupt lost" diagnostic interrupt is generated if a successive interrupt is

triggered at the channel previously saved to the stack and which has not yet been processed

by the CPU.

The CPU does not register any further interrupts at this channel unless it has completed

processing of the queued interrupts of the same channel.

Interrupt-triggering channels

The relevant hardware interrupt-triggering channel is logged in the OB40_POINT_ADDR

variable of the start information of OB40. The figure shows the bit assignments of DWORD 8

in the local data.

Byte Variable Data type Description

6/7 OB40_MDL_ADDR WORD B#16#0 Address of the interrupt-triggering module

starting

at 8

OB40_POINT_ADDR DWORD see the figure

below

Indication of the interrupt-triggering inputs

       

   

/% /% /% /%

/'

5HVHUYHG

(GJHFKDQJH&KDQQHO

(GJHFKDQJH&KDQQHO

(GJHFKDQJH&KDQQHO

(GJHFKDQJH&KDQQHO

(GJHFKDQJH&KDQQHO

(GJHFKDQJH&KDQQHO

(GJHFKDQJH&KDQQHO

(GJHFKDQJH&KDQQHO

%LWQR

Figure 3-8 Start Information of OB40: which event has triggered the hardware interrupt

1 2 ... 101 102 103 104 105 106 107 108 109 110 111 ... 675 676

Komentarze do niniejszej Instrukcji

Brak uwag

Siemens Simatic S7-300 Instrukcja Obsługi Strona 106

Komentarze do niniejszej Instrukcji