Siemens Communication module, D-sub socket, 9-pole

The CM 1241 communications modules are used for quick, high-performance serial data exchange via point-to-point connection. The CM 1241 communications modules have the same design features as the basic devices. The modules are snapped onto the rail next to the CPU on the right and are electrically and mechanically connected to each other and to the CPU by the integral slide mechanism. Horizontal or vertical mounting on DIN rail or direct mounting in the cabinet using integral lugs. The following standard protocols are available on the CM 1241 communications modules. For interfacing to third-party systems with simple transmission protocols, e.g. protocols with start and end characters or with block check characters. The interface handshake signals can be called and controlled via the user program. Parameterization of the CM 1241 communications module is particularly user-friendly and simple with STEP 7 Basic.