Siemens SIMATIC PCS 7 - Page 390

Function and communication modules that can be used in a redundant configuration
CPU 410 Process Automation/CPU 410 SMART
390 System Manual, 05/2017, A5E31622160-AC
Module
Article No.
Release
6ES7 341-1AH02-0AE0
6ES7 341-1BH02-0AE0
6ES7 341-1CH02-0AE0
As of product version 1
As of firmware V2.0.0
Communication processor CP 342-2
(ASI bus interface module)
6GK7 342-2AH01-0XA0 As of product version 1
As of firmware V1.10
Communication processor CP 343-2
(ASI bus interface module)
6GK7 343-2AH00-0XA0 As of product version 2
As of firmware V2.03
Counter module FM 350-2
6ES7 350-2AH00-0AE0
As of product version 2
Control module FM 355 C
6ES7 355-0VH10-0AE0
As of product version 4
Control module FM 355 S
6ES7 355-1VH10-0AE0
As of product version 3
Note
One
-sided or switched function modules and communication processors are
not
synchronized in the fault
-tolerant system if they exist in pairs.