Modbus I/O Module
SfAR-S-8DI8RO is a controller’s I/O extension, which, thanks to its unique features, fits a variety of applications.
8 Digital Inputs & 8 Digital Outputs
The module has 8 digital inputs (DI) and 8 relay outputs (RO). Digital inputs can work as fast pulse counters with up to 1000 counts per sec, or timers measuring the ON state and also offering a possibility to connect 2 encoders. Digital inputs support both PNP and NPN input types. Relay outputs are normally open (NO) type. All inputs are isolated from the logic with optoisolators.
Simplified Configuration and Commissioning Process
A built-in RS485 interface allows an easy connection over the Modbus RTU/ASCII protocol. A 32-bit ARM core processor provides fast processing and communication.
The module is equipped with a set of LEDs used to indicate the status of I/Os, power supply, and RS485 communication.
Configuration of the module is carried out with our free software, the SfAR Configurator. A built-in mini USB allows for performing a primary configuration of the unit without an additional power supply.
To simplify the installation, the module has been equipped with the Quick Connector system. Using a dedicated SfAR-S-LINK cable allows for connecting up to 10 modules, which provide both RS485 communication and external power supply.
Technical Specification
Hardware Specification
RS485 interface
mini USB type B interface
Status LED indicators
DIN rail mounted
Quick Connector system
Inputs
8 Digital Inputs (DI)
PNP or NPN
Counter and timer functions
Up to 2 encoders support
Opto-isolated from RS485 and power supply
Outputs
8 Relay Outputs (RO)
NO type relay
230 V AC/30 V DC max. 3 A
Communication
Modbus RTU/ASCII
Dedicated TCP/IP to Modbus RTU/ASCII gateway device, SfAR-S-ETH
Free software - SfAR Configurator
Power Supply
10-38 V DC ± 20%
10-28 V AC ± 20%
