Ehpm Functionality; Ehpm Card/Module Types - Honeywell HPM Service

2 Equipment Description
2.6 EHPM Card Files

EHPM functionality

The Enhanced High-Performance Process Manager Module (EHPM) provides:

Communications with the Local Control Network (LCN) Enhanced Network Interface Module
(ENIM) through the Enhanced Universal Control Network (EUCN)

A Communications processor ( Motorola 68LC040)

Communications through the I/O Link Interface with Input/Output Processors (IOPs) and I/O Link
Extenders

A Control processor (Motorola 68040)

Separate and shared memory for the Communications and Control processors

An I/O Link processor (Motorola 80C32) with SRAM

EHPM redundancy control

EHPM card/module types

The EHPM board set consists of the Enhanced High-Performance Com/Control PWA, High Performance
I/O Link PWA and FTE Interface Module. The interface module is mounted in the 50-pin connector
below the Enhanced High-Performance Communications/Control card in the first left-most card file slot.
The cards and the module are described in the following table.
Card/Module Type
Enhanced High-Performance
Comm/Control Card
High-Performance I/O Link Card
46
Table 2.1 EHPM Card/Module Types
Consists of:






Consists of:




HPM High-Performance Process Manager Service
Honeywell
Function
a Communications (Comm) processor,
Control processor (Control)
separate and shared RAM for the
processors, interface to the HPMM Global
bus on the backpanel
FTE interface to the EHPM FTE Interface
module
redundancy interface to another HPMM
front panel LEDs and a four character
alphanumeric diagnostic display.
an I/O Link processor
SRAM through which the processor
communicates with the
Communications/Control card
an I/O Link driver/receiver interface
a +24 Vdc to +5 Vdc power converter that
provides +5 Vdc for both HPMM cards and
the EHPM FTE Interface module.
R688
December 2020