What this module is for
The Siemens 6ES7197-1LA02-0XA0 is a PLC expansion module for the SIMATIC S7-300 system, classified under PLC I/O & Expansion Modules. It expands the I/O capacity of an S7-300 rack, adding digital or analog channels depending on the specific module variant — this order code is the module itself, not the terminal block.
No official successor or replacement is on record — this MPN is the active build.