Siemens - Digital I/O Module for use with Rapid/Slow Traverse Drives, SIMATIC S7-400 Series, S7-400 Siemens - Digital I/O Module for use with Rapid/Slow Traverse Drives, SIMATIC S7-400 Series, S7-400, Accessory Type: Positioning Module, MPN: 6ES74513AL000AE0 GBP 1807.43 1