VM600 MPS hardware manual (standard version) MAMPS-HW/E 6 - 1
Edition 17 - February 2018
Different versions of the CPUM card
CPUM / IOCN CARD PAIR
6 CPUM / IOCN CARD PAIR
6.1 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.
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 Figure 6-1).
• Earlier versions of the CPUM card (PNR 200-595-075-HHh or earlier) fitted with
the MSM586EN or equivalent CPU module (see Figure 6-2).
NOTE: Due to changes to the underlying CPUM 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).
6.2 General overview
The CPUM 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 slot 0 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: a CPU module and an optional serial communications module.
All CPUM cards are fitted with a CPU module that supports two Ethernet connections
(primary and secondary) and two serial connections (primary and secondary). That is, both
the Ethernet redundant and serial redundant versions of the 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
(RJ11/RJ25)) on the IOCN card’s panel, if used.
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