The 6ES7194-2LH10-0AB0 is a 1-meter bus cable for daisy-chaining SIMATIC ET 200AL distributed I/O modules over shielded PROFINET. Both ends are terminated with 4-pole M8 angled connectors—one plug, one socket—and the green PVC jacket identifies it as a bus cable. The 2Y(ST)CY dual-shield construction (aluminum foil plus tinned copper braid) protects PROFINET communication at 100 Mbps against industrial electromagnetic interference in IP65/IP67 machine-mount environments.

Green means bus. Do not mix this up with the gray power cable.

ET 200AL uses two visually distinct cable types that share the same M8 connector form factor but carry fundamentally different signals. Green jacket = shielded PROFINET bus. This cable carries 100-Mbps Ethernet communication between ET 200AL nodes, and the dual shield is essential for signal integrity. Gray jacket = unshielded 24 V DC power. That cable (6ES7194-2LHx0-1AB0 series) distributes auxiliary power to the modules. Cross-plugging a gray power cable into a bus port will not establish communication; cross-plugging a green bus cable into a power port will not power the module. Worse, if a power cable is mistakenly plugged into a bus port on a module that does not have internal protection, the 24 V DC can destroy the PROFINET ASIC. Check the jacket color before you plug anything in.

Why angled connectors at both ends?

ET 200AL modules are compact—often mounted side by side on a machine frame with limited overhead clearance. An angled M8 plug exits the port at 90 degrees, keeping the cable flat against the module face instead of protruding 30 mm straight out into the path of moving machine components or a closing cabinet door. With angled plugs at both ends, the 1-meter bus cable routes cleanly from the socket of one module, hugs the mounting rail, and enters the plug of the next module in the daisy-chain with no high spots to snag.