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II - DCE FEL ČVUT v Praze

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SIMATIC S7 Ex Analog Modules<br />

Diagnostics of<br />

analog output<br />

modules<br />

3-48<br />

Table 3-26 provides an overview of the diagnostic messages of the analog<br />

output module which can be parameterized. The enable is set in the<br />

”diagnostics” parameter block (see Section 3.6.3 ).<br />

Table 3-26 Diagnostic messages of analog output module<br />

SM 332; AO 4 x 0/4...20 mA<br />

Wire break 2)<br />

Diagnostic message Effective range<br />

of diagnostics<br />

Incorrect parameters in module<br />

Incorrect parameters in module<br />

Module not parameterized<br />

No internal auxiliary voltage<br />

No external auxiliary voltage<br />

Channel group<br />

configurable<br />

Fuse blown Module no<br />

Time watchdog tripped<br />

EPROM error 1)<br />

RAM error 1)<br />

CPU error 1)<br />

1) The tests are conducted during start-up and on-line.<br />

2 ) Wire break recognition at output values I > 100 A and output voltage > 12V<br />

yes<br />

no<br />

I/O Modules with Intrinsically-Safe Signals<br />

C79000-G7076-C152-04

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