Siemens Simatic S7-1500H Manual - Halaman 13

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Product overview

2.2 Configuration and operating principle

Note

Standard rail adapter

You mount the CPUs on a standardized 35 mm rail using the standard rail adapter.

You will find information on mounting the standard rail adapter in the S7-1500R/H redundant

system (https://support.industry.siemens.com/cs/ww/en/view/109754833) System Manual.

Principle of operation

One of the two CPUs in the redundant system takes on the role of CPU for process control

(primary CPU). The other CPU takes on the role of the following CPU (backup CPU). The

assigned role of the CPUs can change during operation. Synchronization of all relevant data

between primary CPU and backup CPU ensures fast switching between CPUs in the event

of a primary CPU failure. If the primary CPU fails, the backup CPU retains control of the

process as the new primary CPU at the point of interruption.

The redundancy connections are the PROFINET ring with MRP. The CPUs are

synchronized via a PROFINET ring.

Additional information

You can find a detailed description of the operation and design of the CPUs in the system

manual Redundant System S7-1500R/H

(https://support.industry.siemens.com/cs/ww/en/view/109754833).

CPU 1515R-2 PN (6ES7515-2RM00-0AB0)

Equipment Manual, 11/2019, A5E42009914-AB