User`s guide

Copyright © 2004 EIM COMPANY, INC. • 13840 PIKE ROAD • MISSOURI CITY, TX. 77489
Page 124
Controlinc 1746-C (Version 5.21) Network Master Users Guide (2004-11-18)
6.6. App Note: Install the 1746-C Network Master Firmware
Unless the 1746-C Network Master module is supplied by EIM with software (driver) installed, it is
necessary to install it. Installation may also become necessary for software upgrades or in the case of a
failed 1746-C module being replaced in the field.
Follow the procedures in this section to install the software. The software for the 1746-C is supplied on a
Microsoft DOS compatible diskette in Intel hex format. If an Allen-Bradley compatible software package
is not available for downloading the program, any terminal program with the ability to upload ASCII text
files may be used (for instance … the terminal program, HyperTerminal, which is installed with
Windows95/98/NT, can be used).
The firmware is stored in the EEPROM as discussed in the previous section. Depending upon the
setup, the program is normally run from Random Access Memory (RAM) with Auto-start. Auto-start uses
a small script to automatically begin executing the machine code in the EEPROM. This is useful when
there has been a power outage to the PLC or the PLC requires maintenance.
6.6.1. Configure the Module for a Firmware Upload
1. Disconnect the PRT1 and PRT2 connections to the 1746-C module.
2. Power down the PLC and pull the 1746-C module from the PLC rack.
3. Set JW-4 for
• PRT1 = Default Program Mode (Default PGM).
• PRT2 = ASCII.
• DH485 = RUN.
4. Place the 1746-C module back in the rack.
5. Connect the serial communication cable between the 1746-C and the computer. The correct
cable is a
Null Modem Cable connected between the PRT1 port (top DB9 connector on the
module) and the serial communications port on the computer used for the upload.
Sam
p
le Connection Dia
g
ram
Computer to
transfer the
new
program
from
SLC-500 with
1746-C installed
1746-C
Top Port
is Port 1
Serial Cable with
Null Modem