Scalability

Manual Collection S7-1500/ET 200MP
ft:publication_title
Manual Collection S7-1500/ET 200MP
Product
ET 200MP
S7-1500
Version
V20
Publication date
06/2025
Language
es-ES
Version
20

Introduction

Redundant systems are more cost-intensive to use than non-redundant systems:

  • There are two CPUs.

  • The physical connections (PROFINET ring and redundancy connections) can be required over large distances.

The S7‑1500R/H redundant system is scalable. This means that the S7‑1500R and S7‑1500H systems have the same functional scope, but differ in terms of:

  • Performance

  • Hardware

  • Configuration versions

  • Range

  • Configuration limits

  • Costs

Note:

MRP interconnection

MRP interconnection allows the redundant coupling of two or more rings with MRP in PROFINET networks. With MRP interconnection, you are not limited to the maximum number of devices in a ring when setting up redundant network topologies. You can find more information in the Redundancy section.

S7-1500R

You connect the CPUs to the Industrial Ethernet over X2 PROFINET interfaces of CPUs S7-1515R-2 PN or using an additional switch.

S7-1500R supports the following number of PROFINET devices (switches, S7-1500R CPUs, S7-1500 CPUs (V2.5 or later), HMI devices, and IO devices such as ET 200MP and ET 200SP): max. 50 (recommended: max. 16) in the PROFINET ring

S7-1500R supports the following number of IO devices on the R CPUs: max. 64 in PROFINET ring and decoupled by switches (additional line topology)

Note:

Recommendation for S7-1500R: Operate a maximum of 16 PROFINET devices (including R-CPUs) in the PROFINET ring.

The number of devices in the PROFINET ring affects the availability of the S7-1500R system. You should therefore operate no more than 16 PROFINET devices (including R-CPUs) in the PROFINET ring. Operating significantly more devices in the PROFINET ring will reduce the availability of the IO devices and the R-CPUs.

The technical specifications in the documentation are based on the recommended maximum of 16 PROFINET devices in the ring in S7-1500R.

The redundancy connections in S7-1500R are the PROFINET ring with MRP. The CPUs are synchronized over the PROFINET ring.

Figure 1. S7-1500R configuration variant

①

System power/load current supply (optional)

②

CPU S7-1515R-2 PN

③

PROFINET cable (redundancy connections, PROFINET ring)

④

IO device in the PROFINET ring

⑤

Switch

⑥

IO device outside the PROFINET ring (separated with a switch)

S7-1500H

You connect the CPUs to the Industrial Ethernet over a PROFINET interface or using an additional switch.

S7-1500H supports the following number of PROFINET devices (switches, S7-1500H CPUs, S7-1500 CPUs (V2.5 or later), HMI devices, and IO devices such as ET 200MP and ET 200SP): max. 50 in PROFINET ring

S7-1500H supports the following number of IO devices on the H-CPUs: max. 256 in PROFINET network (ring, line or combined topology)

The redundancy connections in S7-1500H are two duplex fiber-optic cables that connect the CPUs directly with plug-in synchronization modules.

The figure below shows a configuration example of the S7-1500H in the PROFINET ring.

Figure 2. Configuration variant S7-1500H in PROFINET ring

①

Load current supply (optional)

②

CPU 1517H‑4 PN

③

PROFINET cable (PROFINET ring)

④

Redundancy connections (2 duplex fiber-optic cables)

⑤

IO device in the PROFINET ring

⑥

Switch

⑦

IO device outside the PROFINET ring (separated with switch)