ARC919 Series

ARC919 is a device that transmits and receives data via Modbus RTU and logs data, supporting both master and slave modes. It provides TTL, RS232, and RS485 ports for easy connection with multiple devices, and saves register data to a USB flash drive or the CSV (table) file of a TF card in the specified format. It is suitable for industry, agriculture, meteorology, environment, laboratory, and other unattended applications. FEATURES Support all devices with the standard MODBUS RTU protocol Standard MODBUS RTU protocol, supports master and slave With built-in FAT16 and FAT32 file systems, supporting a USB flash drive or TF card with a capacity of up to 32 GB Provide RS485, RS232, and TTL three communication ports Automatically create table (CSV) files by date The master mode supports 10 slave devices, up to 50 registers OLED display Automatic RTC (timestamp) function Adopt multiple designs such as reverse polarity protection, overvoltage protection, overcurrent protection, anti-interference, and making it stable and reliable watchdog timer SPECIFICATION Comm. Protocol : MODBUS Data Rate : 2,400-115,200 bps Data Type : Short  / Long /  Float Communication Port : RS485 / RS232 / TTL Master Mode Function Code : 03 / 04 Read Mode : Continuous read or single read Connected Slave Device : 10 devices (Max.) Registers to Be Read : 50 registers (Max.) Slave Mode Function Code : 06 / 10 Storage Device : Equipped with both a TF card and a USB flash drive Max. Storage Capacity : 32 GB Storage Priority : Upon power-on, storage priority is given to whichever storage device is inserted first Stored File Format : CSV file Logging Mode : Automatic / Manual Logging Rate : 0-9999 seconds per data Recording Capability : 9 Months (50 Registers, 1 Data / Second) 38 Years (1 Register, 1 Data / Second) Recycling Mode : Newest  Data overwrites the oldest data Display : 0.91" (OLED) Line 1 / Line 2 : 16 Digits for parameter data Displayed Content : Date / Time, process data, status Response Timeout : 5-250 ms Indicator Light : Operating and logging statuses Power Supply : 7-33 VDC Power Consumption : <1.2 W Operating Temperature : -20~85 °C Storage Temperature : -20~85 °C Protection Class : IP65 Housing Material : Aluminium alloy Mounting : Wall mount / Bracket on main device Cable Entry : M16 USB Port : USB 2.0 Vibration Test : 10-60 Hz, 10 m/s2 for 3 hours Keypad : 4 Internal keys for programming and display control (ENT/SEL/Up/Down) Data Storage : Operation parameters are stored by EEPROM for more than 10 years Weight : 0.65 kg Dimensions : 125 mm * 190 mm * 46 mm