Allen-Bradley PLC-5 series User manual

Publication17855.13 April 1996
Enhanced PLC5
Programmable Controller
Firmware Upgrade
(Catalog Numbers 1785-L11B, -L20B, -L30B,
-L40B, -L40L, -L60B, -L60L, -L80B)
These instructions describe:
•an important safety precaution involving static electricity
discharges
•how to upgrade the processor firmware
For more information about PLC-5 processors, see the Enhanced and
Ethernet PLC-5 User Manual, publication number 1786-6.5.12. For
more information, contact your Allen-Bradley service representative.
Printed circuit board components and Programmable Read-only
Memory (PROM) devices can be damaged during routine handling
and installation. Follow these precautions to reduce static electricity
discharges before you upgrade the processor firmware.
•Handle the printed circuit boards and PROMs by the case or
carrier without touching the pins or the edge connector.
•Use a static-free workstation.
•Connect the static-free workstation to ground through a minimum
200K ohm resistance.
•Wear a grounded, conductive wrist strap with a minimum 200K
ohm resistance.
•Ground all tools before you begin to upgrade the firmware.
•Control the relative humidity of the installation area – ideal
conditions are 40% to 60% relative humidity.
AB
Installation Instructions
Using These Instructions
Before You Install ...
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Enhanced PLC-5 Programmable Controller Firmware Upgrade2
Publication17855.13 April 1996
Follow these steps to upgrade the processor firmware.
1Save
processor memory using the programming software.
2 Remove the battery cover and disconnect the battery .
3
Skip this step if you have a PLC5/1 1 or 5/20 processor .
Remove the phillips head screw near the channel 1B LED and
gently remove the channel 1 communication plug. Be aware
that the memory grounding clip may move or drop off from the
cover mounting tab.
4
Skip this step if you have a PLC5/1 1 or 5/20 processor .
Remove the lug nuts that hold the serial channel to the metal
face plate. These lug nuts are located on the exposed circuit
board for PLC5/40 and 5/60 processors.
5
Remove the four screws that hold the right side plastic cover .
6
Remove the washers and two remaining screws located in the
middle of the exposed circuit board.
Separate the two processor boards by pulling the exposed circuit
board at the backplane edge connector away from the metal cover
as you would open a book. Notice the direction in which the battery
cable is wrapped around the nearby standof f to prevent obstruction
of the dip switch. After you separate the boards, pull the battery cable
through the battery housing (still attached to the circuit board.)
8
Disconnect the wires leading from the keyswitch to the stake pins on
the exposed circuit board.
keyswitch;
selects processor mode
channel 1A communication
port;
8pin miniDIN, DH+ programming
terminal connection
channel 1A status indicator
channel 0 serial port
7
To Upgrade the Processor
Firmware ...

Enhanced PLC-5 Programmable Controller Firmware Upgrade 3
Publication17855.13 April 1996
Observe the orientation of the pin 1 indicators before you remove each PROM. Replace each of the
indicated PROMS, checking to see that the pin 1 indicators are correctly oriented.
9
Example (for PLC5/40, 5/60, and 5/80 series A, B, and C processors)
Assemble the processor and check to see that it starts up properly
. Reload your program and make certain that it
runs properly . If you have any questions, call AllenBradley T echnical Support at (216) 6466800.
11
For this processor: Replace these PROMs:
PLC5/1 1 and 5/20 series A and C
PLC5/30 series A and C
PLC5/40, 5/60, and 5/80 series A, B, and C
U70 and U61
U5 and U31
U5, U16 or U13, and U31
U–31
U–5
U–16
10
Skip this step if you do not have plug firmware . If you have communication plug PROMS, you may
have received catalog number 6690DS2 PROMs with your upgrade kit. T o update these PROMs, follow
the previous procedure to remove each plug and replace the PROM in socket U7.
U–7
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Publication17855.13 April 1996
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productivity and quality for more than 90 years. We design, manufacture and support a broad
range of automation products worldwide. They include logic processors, power and motion
control devices, operator interfaces, sensors and a variety of software. Rockwell is one of the
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Publication17855.13 April 1996 PN 95512530
Copyright 1996 AllenBradley Company , Inc. Printed in USA