Omron CJ1W-ETN21 V1.4 ethernet unit *new*

Use Ethernet to implement various communications protocols and implement FINS message communications using UDP/IP or TCP/IP with a user application on a host computer or with support software, such as the CX-Programmer. Use the clock on an SNTP server to automatically adjust the clocks in the PLCs connected to the Ethernet network. (An SNTP server is required separately.) An FTP server is built in, so files can be used to transfer PLC data between network PLCs and workstations or personal computers with an FTP client. Email can be used to send commands to the PLCs, or triggers can be set so that the PLCs will send PLC data or Ethernet Unit status to a host computer. The standard UDP/IP and TCP/IP protocols are supported to enable communications with a wide range of devices, workstations, personal computers, and Ethernet modules from other manufacturers. The SMTP/POP3/SNTP servers enable the use of host names instead of IP addresses.

LAN module technical details:

• Communications functions:
  • FINS communications service (TCP/ IP, UDP/IP), FTP server functions, socket services, mail transmission service, mail reception (remote command receive), automatic adjustment of PLC's built-in clock, server/host name specifications
• Units per CPU Unit:
  • 4x max. (including Expansion Racks)
• Number of Units that can be mounted:
  • 4 max. (including Expansion Racks)
• Media access method:
  • CSMA/CD Modulation method
• Baseband Transmission paths star form baud rate:
  • 100Mbit/s (100Base-TX)
  • 10Mbit/s (10Base-TX)
• Transmission media:
  • Unshielded twisted-pair (UDP) cable:
    • CAT5
    • CAT5e
  • Shielded twisted-pair (STP) cable:
    • 100Ω
    • CAT5
    • CAT5e
  • Unshielded twisted-pair (UDP) cable:
    • CAT3
    • CAT4
    • CAT5
    • CAT5e
  • Shielded twisted-pair (STP):
    • 100 Ω
    • CAT3
    • CAT4
    • CAT5
    • CAT5e
• Transmission distance:
  • 100m (distance between hub and node)
• Number of cascade connections:
  • No restrictions if switching hubs are used.​​​​​​
• Current consumption (Unit):
  • 370mA max at 5VDC
• Other general specifications:
  • Other specifications conform to the general specifications of the CJ-series.
• Number of nodes on FINS network:
  • 254
• Server specification:
  • Specification by IP address or host name specifications (DNS client function)
• FINS communications service:
  • FINS/UDP
  • FINS/TCP
• FTP server function:
  • The CPU unit's file memory (memory card or EM file memory) can be read/written.
• Automatic clock information adjustment:
  • The CPU unit's internal clock data can be automatically adjusted to the clock data received from the SNTP server
• Web functions:
  • The unit settings can be made and status can be read from the web browser using the Web server.
• Mail functions:
  • Mail send functions
  • Mail receive functions
• Socket service function:
  • TCP socket services
  • UDP socket services

Download Omron CJ1W-ETN21 Ethernet unit technical datasheet