The RO-(ETH/LC)/(USB)-PWM16-64 module is available in versions with 16, 32 or 64 MOSFET outputs with PWM function. As interfaces the serial standards RS-232 or RS-485 are available. In addition, the existing USB 2.0 port can also be used.
- RS-232/RS-485 interface with galvanic isolation
- Open RS-232/485 protocol, plain text mode
- USB 2.0 interface with up to 480 Mbit
- 16/32/64 MOSFET outputs with pulse width modulation (0 .. 100%)
- PWM frequency = 1 KHz (resolution 1%)
- Galvanic isolation by optocoupler

PWM outputs
For the PWM outputs P-Ch MOSFETs were used, which allow a pulse width modulation from 0 to 100%. The PWM frequency here is 1kHz. With this module, e.g. dimmers can be realized or motors can be controlled.

Fail-safe mode
The fail-safe mode is a safety function in which the DEDITEC module switches to a previously configured, safe switching state in the event of a connection failure.
This is intended to prevent connected installations or systems from continuing to run in an uncontrolled manner.
Three switching states can be defined for each digital output: a) Switched off, b) Switched on or c) Unchanged.
The fail-safe circuit is triggered by a timeout protection function. If the control unit no longer receives any commands from the control PC within a previously defined period of time, the timeout function comes into effect. The cause of a timeout can be a loss of connection between the control PC and the DEDITEC control system or failure of the control PC.
Timeout modes
Three timeout modes are available:
A) “Normal mode” is valid once and must be reactivated manually by software command after each timeout event. The customer application still has access to all controller outputs.
B) In “Auto reactivate mode”, the timeout function is automatically reactivated after communication with the control PC has been re-established. The customer application still has access to all outputs of the control unit.
C) The “Secure outputs mode” blocks access to the outputs after the timeout event. Unlocking can only be carried out by software command. This is an important safety aspect

LEDs
Each digital input and output has a separate LED that lights up when the signal state is active. Furthermore, the status of the operating voltage, the communication with the interface, error events or the occurrence of a timeout can be displayed.

Connectors
A screwless system from the manufacturer WAGO Kontakttechnik is used as the connector. The 1-wire female connectors are 100% protected against mismating and have an eject and locking mechanism. All conductor types up to 1.5mm² can be connected.
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