The Siemens Industry Automation Division has improved the performance of the two technology modules 2 Pulse and 1 Step for the Simatic ET 200S distributed input/output (I/O) system and has also added new functions. On the dual-channel technology module 2 Pulse, which controls actuators and valves, it is now possible to measure and precisely regulate the output current. A new traversing task for approaching a specified position has been integrated in the single-channel stepper motor module 1 Step for positioning tasks in combination with stepper motors.
The dual-channel technology module 2 Pulse for controlling actuators and valves now also measures the current that is output in the PWM (pulse width modulation) and pulse train modes and sends the value back to the computer. To improve performance, the two channels of the module can be switched in parallel, thus providing a current of up to 4 amps. Further modes are frequency output, output of a pulse with a predefined length, and on/off delay.
