Rockwell Automation 2706-F11J_F11JC_F21J_F21JC DL50 INSTALLATION MANUAL - Manual (Page 94)

A–B
7
Chapter
7–1
Bootstrap Mode
This chapter describes how to operate the DL50 in the bootstrap mode. The
bootstrap mode allows the DL50 to receive firmware revisions.
The bootstrap mode is entered by sending a Ctrl-L (Decimal 12) control byte
as described in Table 5.B (Simplex Protocol) or Table 5.G (Duplex Protocol).
Use the bootstrap mode to update or correct any anomalies in the DL50
firmware.
The following is required to update the DL50 firmware:
•
A personal computer with DOS 3.0 or greater and an RS-232 port.
•
A firmware update kit from Allen-Bradley (Catalog No. 2706–NR4)
which will contain a diskette and an instruction sheet.
•
The addresses of all slave devices on the RS-485 network (if used).
•
If there are devices on a network that have the same slave address, you
will need the serial numbers of the devices.
•
If the firmware updates are done through the RS-485 port, you will need
an RS-485 to RS-232 converter.
If the DL50s on the link are driven by another master (such as a DL20,
DL40, or other computer), then the master must be disabled before the
firmware update can occur.
Upon power up, the DL50 performs a self test as described in Chapter 3. If
the DL50 fails the Firmware Checksum test, the DL50 will alternately
display the following two messages:
BAD CODE CHECKSUM
Waiting for host . . .
Slave Addr: AAA
Sub-Addr: SSSSSSSSSS
Where: AAA = three digit slave address
SSSSSSSSSS = DL50 Serial Number
At this point, the DL50 will remain idle waiting for the host to send a
bootstrap command.
Chapter Objectives
Bootstrap Mode
How to Tell
if Firmware Is Corrupted