PAC Hot Standby CPU Modules

These M580 CPU modules support M580 Hot Standby systems:

  • BMEH582040, BMEH582040C, BMEH582040S

  • BMEH584040, BMEH584040C, BMEH584040S

  • BMEH586040,BMEH586040C, BMEH586040S

CPU Module Front and Back Views

The three Hot Standby CPU modules have the same external hardware features. The front of the module is on the left. The back of the module is on the right:

1 LED diagnostic display panel

2 Mini-B USB port for module configuration via PC running Control Expert

3 RJ45 Ethernet service port connector

4 RJ45 connectors that together serve as a dual port to the Ethernet network

5 SFP socket for copper or fiber-optic Hot Standby link connection

6 Hot Standby status link LED

7 SD memory card slot (behind door)

8 SD memory card lockable door

9 Cybersecurity rotary selector switch, with settings Cybersecurity Reset, Advanced, Standard
NOTE: The operating mode rotary selector switch will be made operational for future product releases. For this product release, operating mode is automatically set to Standard, regardless of the switch position.

10 Hot Standby rotary selector, used to designate the PAC as either PAC A or PAC B, or to Clear the existing Control Expert application

NOTE: The only visible difference between safety and non-safety CPUs is that safety CPUs are colored red.

Hot Standby Rotary Selector Switch

Use the rotary switch on the back of each M580 Hot Standby CPU to designate the role that the CPU plays in the M580 Hot Standby configuration:

Use only the small, plastic screwdriver provided with the CPU to set the rotary switch according to its role in a Hot Standby system.

Rotary switch settings include:

Position

Result

A

  • Designates the PAC as PAC A, as referenced in Control Expert and the T_M_ECPU_HSBY DDDT.

  • Assigns the PAC IP address A on Ethernet RIO network.

B

  • Designates the PAC as PAC B, as referenced in Control Expert and the T_M_ECPU_HSBY DDDT.

  • Assigns the PAC IP address B on Ethernet RIO network.

Clear

  • Clears the application in the PAC, and places the PAC into the NO_CONF operational state.

  • If an SD memory card is inserted in the PAC, the application in the card is also cleared,

NOTE: Setting the switch for each Hot Standby PAC to the same A/B position can cause a a conflict of PAC roles.

Clearing CPU Memory

To clear a CPU memory, follow these steps:

Step

Action

1

Set the rotary switch to Clear.

2

Power up the PAC.

3

Power down the PAC.

4

Set the rotary switch to A or B.

When you next power up the PAC, if the remote PAC is primary, the primary PAC transfers the application to the local PAC.

SFP Socket

Each CPU module includes one SFP socket, to which you can connect either a fiber optic or a copper transceiver:

To insert a transceiver:

Step

Action

1

Check that the CPU is powered off.

2

Position the transceiver so that its label is oriented to the left.

3

Press the SFP transceiver firmly into the socket until you feel it snap into place.

NOTE: If the SFP transceiver resists, check the orientation of the transceiver and repeat these steps.

To remove a transceiver:

Step

Action

1

Check that the CPU is powered off.

2

Pull out the latch to unlock the transceiver.

3

Pull on the transceiver to remove it.
NOTE: For part numbers and other information regarding the available transceivers, refer to the description of CPU Hot Standby link transceivers.

Each module comes with a stopper. When the SFP socket is not connected to a transceiver, cover the unused socket with the cover to keep out dust

Grounding Considerations

Follow all local and national safety codes and standards.