Technical Specifications:

• Model Code: SR1400A02
• Communication Ports: 2 ports (configurable as RS-232C or RS-485)
• RS-232C Specifications:
  • Baud Rate: 110, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
  • Data Bits: 7 or 8
  • Parity: None, Even, Odd
  • Stop Bits: 1 or 2
  • Connector: DB-9 (male)
• RS-485 Specifications:
  • Baud Rate: Up to 115200 bps
  • Mode: Half-duplex / Full-duplex
  • Connector: Terminal block (screw-type)
• Power Supply: 5 VDC (supplied from I/O bus, no external power required)
• Power Consumption: ≤ 1.5 W
• Operating Temperature Range: 0°C to +55°C
• Storage Temperature Range: -20°C to +70°C
• Relative Humidity: 5% to 95% RH (non-condensing)
• Isolation: 500 VDC (between port and bus)
• MTBF: ≥ 80,000 hours
• Dimensions (W × H × D): 25 mm × 90 mm × 100 mm (approx.)
• Weight: Approximately 130 g
• Mounting Method: DIN rail (35 mm) or card cage mounting (CENTUM VP I/O station)

Functional Features:

• Dual independent serial ports for simultaneous communication with two devices
• Supports Modbus RTU (Master/Slave) protocol over RS-485
• Supports printer output via RS-232C for alarm and event logs
• Buffer memory: 256 bytes per port (TX/RX)
• Auto-baud rate detection on RS-232C port
• Compatible with CENTUM VP operation station (HIS, ENG, OPR) for data logging

Applicable Industries:
Oil & Gas, Petrochemical, Power Generation, Water/Wastewater, Pharmaceutical, Food & Beverage

Installation Requirements:

• Install in CENTUM VP I/O station or communication rack
• Use shielded cable for RS-485 connections (max 1200 m at 9600 bps)
• Terminate RS-485 bus with 120 Ω resistor at both ends
• Set DIP switches for baud rate, parity, and address configuration

Precautions:

• Do not connect RS-232C and RS-485 devices to the same port simultaneously
• Maximum cable length for RS-232C: 15 m
• Ensure proper grounding of RS-485 shield at one end only
• Do not exceed 115200 bps to maintain signal integrity