II - DCE FEL ČVUT v Praze
II - DCE FEL ČVUT v Praze
II - DCE FEL ČVUT v Praze
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4.5 Diagnostics and Interrupts of HART Analog Modules<br />
4.5.1 Diagnostic Functions of HART Analog Modules<br />
Overview of<br />
diagnostic<br />
functions<br />
Diagnostic<br />
messages<br />
Causes of errors<br />
I/O Modules with Intrinsically-Safe Signals<br />
C79000-G7076-C152-04<br />
If errors occur during configuration and parameter assignment or during the<br />
operating phase, you can use diagnostics to determine the cause of the error.<br />
The general diagnostic behavior of the HART analog module corresponds to<br />
that of the other SIMATIC S7-Ex analog modules, see Section 3.6.4.<br />
The diagnostic messages for the analog input modules are shown in<br />
Table 3-24 of Section 3.6.4; the diagnostic messages for the analog output<br />
modules are shown in Table 3.6.4. The additional diagnostic messages are<br />
listed in the following table:<br />
Table 4-6 Additional diagnostic messages for the analog input module<br />
SM 331; AI 2 x 0/4...20mA HART and the analog output module<br />
SM 332; AO 2 x 0/4...20mA HART<br />
Diagnostic message Effective range of<br />
diagnostics<br />
Modification of HART parameters<br />
reported by the connected field<br />
device<br />
channel<br />
Configurable with<br />
group diagnostics<br />
HART group error yes<br />
The following table provides a list of possible causes and corresponding<br />
corrective measures for the individual diagnostic messages.<br />
Table 4-7 Additional diagnostic messages, possible causes of the errors, and corrective measures<br />
Diagnostic message Possible cause of error / diagnostics Corrective measures<br />
Modification of HART<br />
parameters reported by the<br />
connected field device<br />
The identifier for the modification of<br />
parameters to the HART field device was<br />
set in the HART device status.<br />
HART group error Communication and command error<br />
during HART operation affecting the<br />
connected HART field devices.<br />
SIMATIC S7 HART Analog Modules<br />
yes<br />
If you do not want diagnostic interrupts<br />
to be triggered when parameters are<br />
modified, you should disable the<br />
diagnostic interrupt.<br />
For detailed information, evaluate the<br />
response data record of the relevant client<br />
(see 4.8.3) or the additional diagnostic<br />
data record (see 4.8.4)<br />
4-13
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