The Pro-face GP477R-EG41-24VP is a dedicated interface cable designed for direct communication between Pro-face human-machine interface (HMI) units and Siemens S5 series programmable logic controllers (PLCs) via the TTY (current loop) interface. This 5-meter cable ensures reliable and stable data transmission in industrial automation environments where legacy Siemens S5 systems are still in operation. The cable features a robust construction suitable for factory floor conditions, with connectors specifically tailored to match the HMI and PLC ports. It supports the 24 VDC power supply required for TTY communication, enabling seamless integration without additional signal converters. The 5-meter length provides flexibility for panel-to-controller mounting distances while minimizing signal degradation. This cable is an essential accessory for maintenance, upgrades, or new installations involving Pro-face GP477R series touchscreens and Siemens S5 PLCs.