The Siemens 6ES7740-0AA00-1XA0 is a retrofit kit — a CD-ROM software load for the PG 740 programming device. It provides the firmware or application data needed to bring a PG 740 up to a specific revision or function set.
The kit is specific to the Siemens PG 740 programming device — a field-service tool used for commissioning and maintaining SIMATIC S5 and early S7 systems. A buyer holding a PG 740 with an outdated software revision can use this CD-ROM to restore or upgrade the device's firmware load.