Vibro-Meter ABE056 – 1U ultra-thin single-rack

ABE056 – 1U ultra-thin single-rack

Different versions of the CPUM card

In 2015. the CPUM card was updated to use a new PC/104 CPU module (PFM-541I or

equivalent) that supports two Ethernet interfaces by default, which required updates to the

underlying carrier board (that is, the CPUM card itself).

Previously, the CPUM card was fitted with a CPU module (MSM586SEN or equivalent) that

supported one Ethernet interface by default and required an additional Ethernet controller

module (MSME104 or equivalent) to be fitted in order to be Ethernet redundant.

So the different versions of the CPUM card in use are:

• Later versions of the CPUM card (PNR 200-595-076-HHh or later) fitted with

the PFM-541I or equivalent CPU module (see Figure6-1).

• Earlier versions of the CPUM card (PNR 200-595-075-HHh or earlier) fitted with

the MSM586EN or equivalent CPU module (see Figure6-3).

NOTE: Due to changes to the underlying CPUM card (carrier board), the later versions of

the CPUM card are not compatible with the earlier versions of the CPUM card.

Accordingly, the PFM-541I or equivalent CPU module can only be used with the

later versions of the CPUM card (PNR 200-595-076-HHh or later) and the

MSM586EN or equivalent CPU module can only be used with the earlier versions

of the CPUM card (PNR 200-595-075-HHh or earlier).

6.2General overview

The CPUM card is a modular CPU (central processing unit) card that acts as “rack controller”

in a networked VM600 system. Depending on system requirements, the CPUM can be used

either alone in the rack (installed in the front card cage) or in conjunction with the associated

IOCN input/output card (installed in slot0 of the rear card cage, directly behind the CPUM).

The CPUM card consists of a carrier board with two PC/104 type slots that can accept

different PC/104 modules, typically a CPU module in PC/104 slot1 and an optional serial

communications module in PC/104 slot2.

All CPUM cards are fitted with a CPU module (PC/104 slot1) that supports two Ethernet

connections (primary and secondary) and two serial connections (primary and secondary).

That is, both the Ethernet redundant (PNR200-595-0Ss-33h) and serial redundant

(PNR200-595-0Ss-53h) versions of the CPUM card.

The CPUM card with the CPU module provides:

• Primary Ethernet communications via the ‘NET’ connector (8P8C (RJ45)) on the CPUM

card’s panel or the ‘1’ connector (8P8C (RJ45)) on the IOCN card’s panel, if used.

NOTE: The ‘NET’ connector on the CPUM card and the ‘1’ connector on the IOCN

card are mutually exclusive, that is, only one can be used at any one time

(configured using jumpers on the CPUM).

• Secondary Ethernet communications via the ‘2’ connector (8P8C (RJ45)) on the IOCN

card’s panel, if used.

• Primary RS-232 communications via the ‘RS232’ connector (D-sub (DE-09)) on the

CPUM card’s panel.

• Secondary RS-232 or RS-485 communications via the ‘RS’ connector (6P6C

(RJ12/RJ25)) on the IOCN card’s panel, if used

The CPUM card can also be fitted with an optional serial communications module (PC/104

slot2) in order to support additional/redundant serial connections. This is, the serial

redundant version of the card (PNR200-595-0Ss-53h).

The CPUM card with the additional/redundant serial communications module provides:

• RS-485 (115.2kbps) communications as either half-duplex (2-wire) or

full-duplex(4-wire) via the ‘A’ and ‘B’ connectors (6P6C (RJ12/RJ25)) on the IOCN

card’s panel.

NOTE: The additional ‘A’ and ‘B’ serial connections can be used to configure multi-drop

RS-485 networks of VM600 racks using ModbusRTU communications.

A diagnostic LED (named DIAG) on the panel of the CPUM indicates the CPUM card status,

such as normal operation and whether VM600 MPS rack (CPUM) security is being used. The

CPUM card’s panel also contains an LCD display for showing the level of a selected

monitored output in bar-graph and digital form. The Alert and Danger levels are also indicated

on the bar graph.

Coloured LEDs (named OK, A and D) on the panel of the CPUM indicate the OK, Alert and

Danger status for the signal selected for display (see Figure2-12). If slot0 is selected, these

LEDs will indicate the general rack status.

SLOT and OUT (output) keys on the panel are used to select which signal to display. The

ALARM RESET button on the panel resets all latched alarms (and associated relays) for the

entire rack.

Possibilities allowed by the CPUM/ IOCN pair include:

• ‘One-shot’ configuration of all VM600 cards using a direct Ethernet or RS-232 serial

connection from an external computer (laptop, notebook, pen-computer, industrial

computer or flat-panel computer) running the VM600 MPSx software (MPS1 or MPS2),

from the Meggitt vibro-meter® product line.

• ‘One-shot’ configuration of all VM600 cards via Ethernet from a networked computer

running the VM600 MPSx software.

• Visualisation of signal levels and alarm limits using the display on the CPUM card’s

panel.

• External communication with third party devices such as a DCS or PLC.