VIBRO-METER MPC4 200-510-071-114 Protective Measurement Card

VIBRO-METER MPC4 200-510-071-114 Protective Measurement Card

VM600 system rack – 19" rack with a height of 6U (ABE04x)

A VM600 MPS can be housed in a 19 inch rack (84TE) with a height of 6U (6HE), known as

the VM600 system rack (ABE04x). It is a 19″×6U rack with 21×VME slots in the front and

the rear of the rack. The rack slots are designated slot00 to slot20 (left to right, as seen from

the front). SeeFigure2-1.

Two types of this rack exist: the ABE040 and the ABE042. These are identical, except for the

position of the rack mounting brackets. An example of a MPS housed in an ABE040 rack is

shown in Figure2-1.

An ABE04x contains a front card cage and a rear card cage. The card cages are separated

by the rack backplane. Each side of the backplane is equipped with connectors allowing

modules/cards to be quickly and easily installed.

The appearance of the front panel and rear panel of the rack depends entirely on the types

of cards installed in the two card cages. These cards are presented in the following sections

of this chapter.

Slot number coding for cards in the rear of a VM600 system rack

Most cards installed in the rear of a VM600 system rack (ABE04x) use an electronic keying

mechanism to help ensure that the card is installed in the correct slot (for example, in the slot

directly behind the associated processing card in the front of the rack). This includes IOC4T,

IOC8T and IRC4 cards.

For VM600 system racks (ABE04x), the rack’s slot numbers are fixed (hard-wired) for each

rack slot (module (card) position) and cannot be changed. Each slot of the backplane has a

unique, hard-wired 4-digit binary code (seeFigure2-2) as follows:

Slot 3 Code 0011

Slot 4 Code 0100

Slot 5 Code 0101

Slot 6 Code 0110

Slot 7 Code 0111

Slot 8 Code 1000

Slot 9 Code 1001

Slot 10 Code 1010

Slot 11 Code 1011

Slot 12 Code 1100

Slot 13 Code 1101

Slot 14 Code 1110.

Accordingly, VM600 system rack slot number coding requires that a card’s slot number is set

to match the rack slot where it is installed. As a result, a VM600 card can only be used in a

VM600 system rack slot for which it has been configured.

For example, a MPC4/ IOC4T card pair configured for slot03 (VM600MPSx software) must

be installed in slot03 of a system rack (ABE04x). In order to be used in a different rack slot,

the card’s rack slot must be reconfigured using the VM600MPSx software.

Cards that implement this electronic keying mechanism have a bank of micro-switches that

can be used to assign a slot number to the card (see Figure2-2). This code is stored in the

slot number (address) assignation register on the card (IOC4T, IOC8T or IRC4).

Each card compares its slot number with the hard-wired slot number coded on the system

rack’s backplane (see Figure2-3). The result of the comparison is typically displayed on the

SLOT ERROR LED on the cards panel:

• If the codes are identical, the LED is green.

• If the codes are not identical, the LED is red