Allen-Bradley ControlNet PLC-5 - Page 13

Publication 1785-IN022C-EN-P - September 2005
Firmware Update Instructions for Ethernet, Enhanced and ControlNet PLC-5 Programmable Controllers 13
Ethernet PLC-5
Programmable Controllers
- 1785-L20E
- 1785-L40E
- 1785-L80E
Series E or Later
To update these series of Ethernet PLC-5 programmable controller firmware,
you must first use ControlFLASH and then if applicable, replace EPROMS.
To start this firmware update, follow these steps:
Step 1 - Prepare the PLC-5 Programmable Controller
1. Save the controller’s processor memory to your hard disk or to an
EEPROM.
2. Disconnect all cables (serial, DH+, ControlNet, Ethernet, etc.) from
the
controller.
3. Remove power from the controller and remove it from the chassis.
4. Remove the controller battery cover and disconnect the battery. This
resets the serial port to its default configuration so that the controller
and ControlFLASH can communicate.
5. If applicable, disconnect the coprocessor or Ethernet Interface sidecar
module.
6. Verify that the serial port DIP switches are set for RS-232.
7. Reinstall the controller and apply power.
8. Turn the controller keyswitch to PROGRAM mode.
ATTENTION
You must save the controller’s processor memory to
your hard disk or to an EEPROM. If you do not,
the controller’s user memory will be lost because the
firmware update procedure erases memory.
Allen-Bradley Motors