Description
MS 373 — Memory
Siemens · MS 373 · 6ES5373-1AA41
Description
The MS 373 (6ES5373-1AA41) is a memory submodule for the SIMATIC S5-135U/155U system, using CMOS-EPROM technology with 32 KByte capacity, used to store the STEP 5 user program persistently.
Key specifications
Parameter | Value |
Function | Program memory submodule for S5-135U/155U |
Memory type | CMOS-EPROM |
Capacity | 32 KByte |
Mounting | Plug-in submodule on S5-135U/155U CPU |
Reference
Field | Value |
Manufacturer (OEM) | Siemens |
Model | MS 373 |
Part number | 6ES5373-1AA41 |
Category | Memory |
System family | SIMATIC S5-135U/155U |
Stores quantity | 2 |
Data confidence | high |
Manuals filed (007 - Manuals)
- Manual CP1430 English Vol1.pdf — S5-115U system reference (CP/comms volume)
- 02 - CPU948 Programming Manual.pdf — S5 CPU programming reference (115U/155H family)
Notes
Verified via multiple distributor datasheets (4dcontrols.com, jc-electronics.com, plc-mall.com) confirming MS 373 CMOS-EPROM 32KB module.
Source: Spare Parts List for Sales V7 (Bohemia Market / BM Global stores inventory). Filed in the AI HW Knowledge Base.