Siemens Software 6ES7870-1AB01-0YA1

The product with the component number 6ES7870-1AB01-0YA1 is a single license for the Siemens SIMATIC S7, MODBUS Slave V3.1 software. 

Specification:

• Product Type: Software license for MODBUS Slave communication.
• Software Version: V3.1.
• License Type: Single license (EL – EInzellizenz) for one run-time software (R-SW) installation.
• Standards and Languages:
  • Developed according to IEC 61131 standards.
  • Supports: German.
  • Product Class: Class A. 

this product is the necessary license key (hardware dongle) to unlock the MODBUS Slave communication functionality on compatible Siemens S7 PLCs.