Document reference MAMPS-HW/E HARDWARE MANUAL
Edition 18 - March 2022 VM600 machinery protection system (MPS)
2-7
Racks
OVERVIEW OF VM600 MPS HARDWARE
2.1.2.1 Slot number coding for cards in the rear of a VM600 slimline rack
Most cards installed in the rear of a VM600 slimline rack (ABE056) 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). See also 2.1.1.1 Slot
number coding for cards in the rear of a VM600 system rack.
For VM600 slimline racks (ABE056), the rack’s slot number is configurable by DIP switch and
slot number coding requires that the rack’s slot number matches the slot number used by the
card, as follows:
NOTE: For a VM600 slimline rack (ABE056), the slot number coding range is 0 to 12.
The factory assigned default values for slot number coding are as follows:
• Slot = 03 (0011 binary) for a slimline rack configured for use by a
VM600 system such as a VM600 MPC4 and IOC4T.
Accordingly, VM600 slimline rack slot number coding requires that the rack’s slot is set to
match the card’s slot number. As a result, a VM600 card can only be used in a VM600 slimline
rack in which the rack slot number matches the slot number configured on the card.
For example, a MPC4 / IOC4T card pair configured for slot 03 (VM600 MPSx software) must
be installed in a slimline rack (ABE056) in which the rack slot has been configured for
operation as slot 03, so the slimline rack’s DIP switch must be set to 03. It is important to note
that 03 (0011 binary) is the default slot number used by the VM600 MPSx configuration
software for this type of rack.
When a card that implement this electronic keying mechanism is to be installed in a slimline
rack (ABE056), micro-switches on the backplane of the slimline rack must be configured to
match the slot number configured for the card (Figure 2-5). This allows a card to be used in
a slimline rack without reconfiguring its slot number.
Figure 2-5: Micro-switches to assign the slot number (ABE056)
Example showing the setting of micro-switches for slot 11 in an ABE056 rack
LSB = Least-significant bit
MSB = Most-significant bit
Micro-switch number
Hole
Raised part
of switch
Backplane of ABE056
IOC4T connector
IOC4T connector
RLC16 connector
1234
ON
ON
(LSB) (MSB)
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