Specifications

10–21 Troubleshooting
Publication 1747-6.2
The download process of the operating system by the SLC 5/03,
SLC 5/04, and SLC 5/05 processors takes approximately 45 seconds.
While the download is in progress, the RUN and FLT LEDs remain
off. The other four LEDs — RS232, DH485 (DH+ on the SLC 5/04
and ENET on the SLC 5/05), FORCE, and BATT — turn on and off
in a walking bit sequence. If the download is successful, these four
LEDs remain on together.
!
ATTENTION: Jumper J4, located on the bottom
corner of the motherboard, provides write protection
from any download of a new operating system. The
“out of the box” position of this jumper is
“PROTECT,” or write protect. Without the jumper, the
processors are write protected.
Jumper J4
Catalog and Serial
Number Label
The SLC 5/03, SLC 5/04, and SLC 5/05
processors are protected from the
operating system download when jumper
J4 is in this position:
The SLC 5/03, SLC 5/04, and SLC 5/05
processors accept the operating system
download when jumper J4 is in this
position:
Mother Board
Daughter Board
OR
SLC 500
CAT
SER
SERIAL NO.
PROC. REV.

U
L

SA
PROCESSOR UNIT
MADE IN USA
LISTED IND. CONT. EQ.
FOR HAZ. LOC. A196
CLASS 1, GROUPS A, B, C AND D, DIV
. 2
FAC
OPERATING TEMPERATURE CODE T3C
1
3
PROTECT
PROGRAM
J4
OS #
SER
FRN
OPERATING SYSTEM INFO
PLACE OS UPGRADE LABEL HERE
WHITE
RED
+
-
BATTERY
CURRENT REQUIREMENTS: 1A @ 5 VDC
200mA @ 24 VDC
Place the operating
system upgrade
label here.
Operating System
Upgrade/Memory
Module Socket
Identifying Processor
Errors while Downloading
an Operating System