Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-22

Saia-Burgess Controls AG

CPU overview

CPUs and expansion housings

3

Socket A for serial

data port

Socket B1 for intelligent

communication modules or serial

data ports, small terminal

Programming unit (PGU)

or RS 232 serial data port

or telecommunications/SMS

via modem module on I/O socket

Socket B2 for intelligent communi-

cation modules or serial data ports

PCD2.M170/M480

B(1) B2 A

Removing the cover exposes components that are sensitive to electrostatic

discharges.

When the power is switched on, no operations (such as moving jumpers or

(un)plugging I/O modules) should be attempted.

i

To prevent loss of data, batteries should be changed with the power switched on.

3.4.8    Hardware   and firmware    versions    for the PCD2.M110/M120

The firmware versions for the PCD2.M110/M120 are generally upwardly compatible

in terms of hardware, so old CPUs can be fitted with new firmware, in order to take

advantage of new functions. This feature is highly valued, and we will try to retain it

for as long as possible; however, we cannot guarantee this.

At this point, the following known restrictions apply:

 Hardware version D1 from July/August 1995 only works with firmware version

$34; a firmware update is not possible with these controllers

   The use of intelligent communication modules such as Profibus DP, LON and Eth-

ernet requires the minimum hardware and firmware versions. Please refer to the

manuals for the communication modules

Hardware version H introduced significant changes:

 Hardware clock on the base circuit board (previously on the PCD2.Fxx0

communication modules)

 CR 2032 lithium buffer battery (older hardware versions can be easily recognized

by the two round LR03 batteries)

 Internal 5 V supply now rated up to 1.6 A (previously 1.1 A)

 Option to extend memory with 4 MBit chips (giving 512 Kbytes)

From hardware version J, the default set up of the base memory is 128 Kbytes

(previously 32 Kbytes).

The firmware for the PCD2.M110/M120 is stored in two EPROMs. With an EPROM

burner (e.g. Galep-4), new firmware chips can be burned at any time. The file

with the latest firmware version can be downloaded from http://www.sbc-support.ch. Blank