Upgrading CPU Firmware

You can update the CPU firmware by downloading a new firmware version with Unity Loader.

Download the firmware through a connection to one of these:

  • CPU mini-B USB connector

  • CPU service port

  • Ethernet network

NOTE: For a description of the download procedure, refer to Unity Loader, User Guide.

Enabling CPU Firmware Update

To enable the firmware update, you first need to unlock security for the CPU, as follows:

Step

Action

1

In the PLC Bus window, right-click on the Ethernet ports of the CPU.

2

Select Open Submodule.

3

Click on the Security tab.

4

Click Unlock Security.

CPU Firmware File

Select the firmware file (*.ldx) for the BME•58•040S safety CPU. The .ldx file contains firmware upgrades for the safety and process areas of the CPU and for its web pages.

CPU Firmware Update Procedure

To upgrade the CPU firmware, follow these steps:

Step

Action

1

Install Unity Loader software.

2

Connect the PC that is running Unity Loader to the CPU.

3

Launch Unity Loader.

4

Click Firmware tab.

5

In the PC list box, select the .ldx file that contains the firmware file.

6

When connected with Ethernet, check that the MAC address indicated in the PLC box corresponds to the MAC address marked on the CPU.

7

Check that transfer sign is green to allow transfer from PC to CPU.

8

Click Transfer .

NOTE: During the firmware download process, the green DL LED on the CPU turns ON indicating the CPU is communicating only with the Unity Loader Software,

9

Click Close .

After the firmware upgrade process finishes:

  • The CPU reboots with the new firmware.

  • The application program stored in flash memory is preserved.

  • The CPU performs a cold start and enters STOP mode, even if Automatic start in Run is selected in the CPU Configuration tab.

NOTE: If the firmware upgrade process is interrupted (for example, by a lost connection or a power outage), reset the CPU, which in this case will re-start using the old firmware.

Other M580 Safety Module Firmware

Upgrading the CPU firmware also upgrades the firmware of the coprocessor. Each time the coprocessor boots, it receives its operating system from the CPU.

Firmware for the M580 safety power supply and I/O modules is not upgradable.