Modbus RTU Protocol

RS485 Interface

DC 7~36V Wide Voltage

Adjustable Frequency And Duty Cycle

Multiple Isolation Protection Circuits

The Modbus RTU PWM Output 4CH is an isolated RS485 to PWM output module, supports 4-ch PWM outputs with adjustable frequency and duty cycle. Adopts Modbus RTU protocol with built-in protection circuits such as power isolation, magnetical isolation, resettable fuse, and TVS.

• The outputs use high-speed optocoupler isolation, and the output high-level voltage can be switched via an internal jumper
• 4-ch PWM outputs, with independently adjustable frequency and duty cycle
• Configurable device address (1~255), multi devices can be cascaded on RS485 bus
• Onboard voltage regulator, supports 7~36V wide range power supply
• Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
• Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference
• Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
• Onboard watchdog, for stable output without crashing
• Rail-mount case design, compact size, easy to install
• 3x LEDs for indicating the power status and signal transceiving status

Supports sending Modbus RTU protocol commands via RS485
and outputting PWM signal

Onboard power and signal dual isolation for RS485 communication, provides stable isolation voltage, features high reliability and strong anti-interference performance. Built-in TVS (transient voltage suppression tube) can effectively suppress the surge voltage and transient peak voltage in the circuit, lightningproof & ESD protection. Built-in resettable fuse and protection diode to ensure stable current and voltage output, provides over-current and over-voltage proof, improves shock-proof performance, suitable for industrial environments with high requirements.

Built-in fuse and anti-reverse protection, With Power and Signal Dual Isolation