• ES/OS Single Stationtype 6ES7660-0BC31-2AA0 with subsequent installation of new computers 6ES7660-8BT01-2FE1 or current equivalents – 4 units.

• OS Clienttype 6ES7660-0EA10-2AA0 on equipment 6ES7660-8BT01-2FA1 or similar, taking modern functionality into account – 13 units.

• OS Server IEtype 6ES7660-0DC11-2BA0, installing new servers 6ES7660-8JD01-2SE1 or their modern equivalents – 2 units.

Software update:

1. Install PCS software version 10 or a more current version available at the time of the work, which will be compatible with the installed equipment.

2. Transfer and adapt the existing project in such a way as to preserve the current functionality and avoid data loss.
   
   Previous system is build on pcs v7, can i rebuild this system on v10 without changing APL ?

Hello AutoGen_3ed79

This section informs you about the service for upgrading various previous versions of SIMATIC PCS 7 as well as the version-specific use of software and licenses for system communication via Industrial Ethernet:

The range of upgrades is divided into:

• Upgrades from SIMATIC PCS 7 Version V9.x to V10.0 SP1
• Upgrades from SIMATIC PCS 7 Version V8.x/9.0 to V9.1
• Upgrades from SIMATIC PCS 7 Version V8.x to V9.0
• Upgrades from SIMATIC PCS 7 Version V8.0/V8.1 to Version V8.2
• Upgrades from SIMATIC PCS 7 Version V7.1 to Version V8.2
• Upgrades from SIMATIC PCS 7 Version 7.1/8.0 to Version 8.1
• Upgrades from SIMATIC PCS 7 Version 7.0 to Version 8.0

PCS 7 does not support a direct upgrade from V7.0 to V10.0 SP1.
The recommended upgrade path is PCS 7 V7.0 → V8.2 → V9.x → V10.0 SP1.

You’ll need to perform intermediate upgrades from PCS 7 V7.x to V8.2, then to V9.x, and follow the guidelines in the manual "Process Control System PCS 7 – Software Update with Utilization of New Functions V9.1" to transition to V9.1 before finally upgrading to V10.0 SP1.

and updating PCS7 V7.0 to V10.0 SP1 Supported Windows Versions and Hardware

Hope this helps!