Summary of CI840 Module Upgrade Guide (Applicable to CI840, CI840AZ, CI840A, CI840A-eA)

1. Preparation

Hardware requirements:

  1. Computer (Windows NT4 or higher, COM port or USB to serial adapter required).
  2. Connection cable: TK212 3BSC630167R2) or TK212A 3BSC630197R1.
  3. CI840 module and base board (TU846/TU847), 24V power supply required.

 

Connection steps:

1. Connect the Dsub9 end of the cable to the computer COM port and the RJ45 end to the Service Port A/B of the base board (corresponding to module position A or B).

2. Online upgrade (redundant system)

Notes:

  1. Before upgrading, check the module redundancy status (via Control Builder OnLine) to ensure that there are no communication errors (such as "Cable A error").
  2. Always upgrade on the backup module.
  3. After upgrading, wait for the status to return to normal before performing the master-slave switch (via DTM or disconnecting the corresponding Profibus cable).

3. Read the software version

  1. Use a terminal program (such as Hyperterminal) to set the communication parameters: 9600bps, 8 data bits, no parity, 1 stop bit.
  2. Restart CI840 (loosen and retighten the locking screw at intervals of 5 seconds).
  3. Wait for about 30 seconds, the terminal will display the current version (such as "CI840 SW 3.0/0").

4. Upgrade the software version

Upgrade steps:

  1. Use the tool `loader32.exe` and select manual configuration of the COM port.
  2. Select the firmware file and click "Download".
  3. Key operation: Loosen the locking screw within 10 seconds after pressing "Download", wait for 5 seconds and then retighten it.
  4. The module automatically restarts after the upgrade is completed (the LEDs are all on for about 30 seconds).
  5. Verify the version and update the module label.

 

5. Common problems and solutions

- If the upgrade fails:

The Bootloader version is displayed instead of the SW version. You need to restart the module and try again.

- If the diagnostics are wrong:

When upgrading from an old version (such as 4.1/1) to 4.2/1+, a "Report diagnostics fault" may be reported. This can be solved by cold restarting the system or modifying the "Power supervision" parameters and then hot downloading.

 

Note: Hot download is not applicable to CI854 modules (firmware lower than version 5.62).

Key tips: Strictly follow the time window operation (such as loosening the screw within 10 seconds) to avoid failure due to timeout!