Omron CJ1W-SCU41-V1 V1.3 serial communication unit 1X RS-232C port + 1X RS-422/485 port *new*

The Serial Communications Units that enable High-speed connections with external devices. Each serial communications unit provides two serial communication ports and the serial communications mode can be set separately for each port from protocol macro, host link, NT Link, serial gateway, and no-protocol. Mount a total of up to 16 CPU Bus Units, including these serial communications Units, to the CPU rack or expansion racks to create systems with up to 32 serial communications ports.

Serial communication unit technical details:

• Serial ports:
  • Port 1: RS-422A/485
  • Port 2: RS-232C
• Hardware version:
  • V1.3
• Supported protocols:
  • Host Link
  • Protocol macro
  • NT Link
  • Loopback test can be selected for each port.
  • Unit Ver. 1.2 or later also supports
    • Serial Gateway (The Serial Gateway can also be executed in protocol macro mode.)
    • no-protocol
    • 1:1 Host Link modes
  • Unit Ver. 1.3 or later also supports:
    • Modbus-RTU slave mode
• Number of mountable Units:
  • A total of up to 16 Units, including all other CPU Bus Units. No Expansion restrictions on the mounting location.
• Data exchange with the CPU Unit:
  • Ordinary refreshing of software switches and status:
    • Allocated 25 words of the 25 words in the CPU Bus Unit CIO Area (constant data exchange with the CPU Unit
  • Transfer from the CPU Unit set by the system:
    • Of the CPU Bus Unit DM Area, each serial port is allocated 10 words (total 20 words).
      • Data is transferred from the CPU Unit at the following times:
        • Startup or restart
        • Ladder instruction: STUP(237)
        • Port Settings Changing Flag turns ON (Auxiliary Area)
• Current consumption *3:
  • 380mA + 150mA/port in use
• Communications mode:
  • Half-duplex (Full-duplex for slave-initiated communications)
• Synchronous mode:
  • Start-stop synchronization (asynchronous mode)
• Baud rate:
  • RS-232C port and RS-422A/485 ports:
    • 1200bps
    • 2400bps
    • 4800bps
    • 9600bps (default setting)
    • 19200bps
    • 38400bps
    • 57600bps
    • 115200bps
    • 230400bps
• Connection configuration:
  • RS-232C port : 1:1 (1:N (N = 32 Units max.) is possible using an Converting Link Adapters.)
  • RS-422A/485 port : 1:N (N = 32 Units max.)
• Number of connected Units:
  • 32 Units max. (unit numbers 0 to 31; unit number 0 is set for 1:1 connection)
• Frame structure:
  • C-mode commands
  • FINS commands:
    • Header: @, address: (host link unit number) 0 to 31 (BCD), data: header code (always “FA”) + FINS header + FINS command + text, error check code: FCS, terminator: * +CR
• Command flow and support:
  • Host computer to Controller:
    • C-mode commands
    • FINS commands (in Host Link protocol)
• Protocol Macro Function Specifications
  • Number of protocols:
    • 20 max.
  • Number of sequences:
    • 1000 max
  • Sequence execution condition:
    • Using the CPU Unit’s PMCR (260) instruction (specifying the sequence number)
  • Communications mode:
    • Half-duplex or full-duplex
  • Synchronous mode:
    • Start-stop synchronization (asynchronous mode)
  • Max communications distance:
    • RS-232C port:
      • 15m
    • RS-422A/485 port:
      • 500m (total cable length: 500m max, T-branch branch lines: 10m max.)
  • Conversion source:
    • FINS commands (received through network (including Host Link FINS) or CPU bus)​​​​​​​

Download Omron CJ1W-SCU41-V1 serial communication unit technical datasheet