Siemens Simatic S7-1500H - Page 320

Primary CPU Backup CPU
Example: Paired
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In STEP7 in the diagnostic status (Online & diagnostics) of the S7-1500R/H system:
Check the system state in the diagnostic status:
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Pairing: "Paired" is shown in the "Pairing state" field.
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No pairing: "No pairing" is displayed in the "Pairing status" field.
Figure 13-1"Paired" diagnostics state
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In STEP7 in the diagnostics buffer (Online & diagnostics): Check the entries on pairing.
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S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Maintenance
13.1 Replacing components of the S7-1500R/H redundant system