Agilent Technologies DP111 Dokumentacja Strona 267

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Appendix A Hardware Units PM891– Processor Unit
3BSE036351-510 A 267
PM891– Processor Unit
Key Features
MPC8270 Microprocessor
running at 450 MHz.
256 MB RAM with integrity
check (shadow memory).
Optical ModuleBus interface
that is designed for a
maximum of seven clusters,
of twelve non-redundant or
six redundant modules (that
is, 7x12 = 84 modules).
Redundant and non-
redundant modules can be
combined.
Three on-board
communication ports:
CN1 + CN2 (built in, 10/100Mbit/s) Ethernet ports (IEEE 802.3u, 10
Base-T/100Base-Tx).
COM4 (built in) serial port (RS-232C) for service tool.
Two Redundancy Control Links — RCU Control Link and RCU Data Link —
for use in redundant configuration.
Secure Digital (SD) card slot that supports the SD card for loading of
application and for saving the cold retain values cyclically. The SD cards of
various manufacturers are supported.
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