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Siemens S5-100U - Page 85

Siemens S5-100U
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Figures
5-1 Example of an “ISTACK” Display on the PG 615, Software Version V 1.4 . 5 - 2
5-2 Structured Program with an Illegal Statement . . . . . . . . . . . . . . . . . . . . . . 5 - 9
5-3 Addresses in the CPU’s Program Memory . . . . . . . . . . . . . . . . . . . . . . . . 5 - 10
5-4 Example of a “DIR PC” Display on the PG 615 . . . . . . . . . . . . . . . . . . . . 5 - 11
5-5 Calculating the Error Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 11
5-6 Tracing the Program with “BSTACK” . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 12
5-7 Example of a “BSTACK” Display on the PG 615 . . . . . . . . . . . . . . . . . . . 5 - 13
5-8 Analyzing the Cause of a Fault in the I/Os . . . . . . . . . . . . . . . . . . . . . . . . 5 - 14
Tables
5-1 Error Indication and Error Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
5-2 ISTACK Output (Bytes 1 to 32) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 -3/4
5-3 Interrupt Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 -5/6
5-4 Errors when Copying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 6
5-5 Meaning of the Remaining ISTACK Bits . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 7
5-6 Mnemonics Used for the Interrupt Display . . . . . . . . . . . . . . . . . . . . . . . . 5 - 8
EWA 4NEB 812 6120-02

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