Features:
- The order scope supplies both IM 305 interfaces together with their 0.5 m rack cable.
- One expansion unit is connected centrally to the S5-115U main controller through the matched set.
- The documented expansion arrangement uses ER 701-0 or ER 701-1 racks and excludes interrupt-generating modules.
The pair places one interface at each end of the expansion link, keeping the central-rack and extension-rack roles physically distinct.
The included cable carries the rack connection between the two IM positions; it is not listed as a standalone programming or fieldbus lead.
Power reaches the expansion rack through its interface side, so rack choice and module placement are part of the complete configuration check.
The Siemens 6ES5305-7LA11 SIMATIC S5 IM 305 Interface Module Set may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES5305-7LA11 SIMATIC S5 IM 305 Interface Module Set Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Two interfaces across one expansion link
- Central Side: One IM 305 from 6ES5305-7LA11 is assigned to the interface position in the S5-115U central controller.
- Expansion Side: The second IM 305 is installed at the corresponding interface position in the expansion unit.
- Matched Set: Both modules and the included cable form the complete order scope.
- Single Extension: The 6ES5305-7LA11 package is specified for the central connection of one expansion device.
Defined interface positions
- IM Slot: Each half of 6ES5305-7LA11 belongs in the designated interface-module location of its rack.
- Rack Roles: The central-rack module and expansion-rack module are installed at opposite ends of the same link.
- Cable Reach: The supplied 0.5 m lead sets the physical distance available between those interface positions.
- Connector Purpose: The cable extends the rack connection and is not used as a programming lead.
How the centralized path is completed
- Rack Link: The IM 305 pair carries the central-controller bus to the connected expansion unit.
- Expansion Supply: The expansion rack receives its supply through the expansion-unit interface module.
- Rack Types: ER 701-0 and ER 701-1 are the documented expansion racks for this arrangement.
- Signal Boundary: The extension path remains within the centralized S5-115U configuration rather than forming a separate network.
Checks before populating the expansion rack
- Controller Family: 6ES5305-7LA11 is assigned to the SIMATIC S5-115U centralized expansion arrangement.
- Expansion Count: The complete set connects one expansion device to the central controller.
- Interrupt Restriction: Interrupt-generating modules are not permitted in the documented IM 305 expansion configuration.
- Suffix Check: The complete 7LA11 code is required to retain the included 0.5 m cable definition.