Hardware Manual

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

Saia-Burgess Controls AG

Expansion of user memory

CPUs and expansion housings

3

The following chips will work, but are no longer recommended for new installations:

Memory type Item-no. Typical codes Size

RAM 4 502 5414 01) SRM2B256LCX70

HY62256ALP-70

GM76C256CLL-70

MEL M5M5256DP-70LL

TC55257DPL-70L

256 Kbits / 32 Kbytes

EPROM2) 4 502 3958 0 AM27C512-90 DC

UPD27C512D-10

M27C512-10XF1

M27C512-10F1

512 Kbits / 64 Kbytes

Steps in the correct installation of extended user memory:

1) Switch off power supply and remove the cover of the PCD2

2) Plug the additional memory chip into the “USER PROG” socket.

Ensure correct alignment (markings on the socket and the chip must match), and

ensure that all pins on the chip are inserted into the socket

3) Set the jumper next to the socket correctly:

PCD2.M110/M120 hardware version ≥ H

and PCD2.M150

F

irm

w

a

re

J (^3) REF
J 2
J 5
WP

USER PROG

PCD2.M110/M120 hardware version < H

F

irm

w

ar

e

J (^3) RE
J 2
WP

USER PROG

Jumper

J1 (memory type) RAM

EPROM

Flash EPROM

Position

R1)

E

F2)

J3 (write-protection) Write protection deactivated3)

Write protection activated3) (only works

for RAM and Flash EPROM)

up1)

WP (down)

J5 (memory size <= 1

Mbit or > 1 Mbit)2)

Memory size <= 1 Mbit

Memory size > 1 Mbit

up1)

down

1) Jumper position on delivery: RAM, write-protection deactivated, memory size ≤ 1 Mbit

2) On the PCD2.M110/M120 with hardware version < H, J5 and the J2 F jumper are not present. This means

that where Flash EPROM is used with these controllers, J2 has to be attached to E and only chips up to 1

Mbit can be used for expansion

3) Write-protection only affects the chip in the USER PROG socket

4) Modify the hardware configuration in PG5 accordingly, and download the new

configuration