Rockwell Automation 2706-NP3 DL20 OFFLINE PROGRAMMING MANUAL - Manual (Page 54)

Transferring S Record Files
Chapter 7
7–14
If you are having problems downloading or uploading, check the following:
•
Verify Cable Connections
Make sure the cable is securely connected to the serial communication
port (Com1 or Com2) of your computer and the serial RS-232 port of
the DL20 or the 1770-SB Recorder.
•
Verify Serial Port on Computer
Verify that the cable is connected to the same serial port (Com1 or Com2)
selected using menu option 1 - Set Up Computer Serial Port.
•
Check Baud Rate
Your computer must be set to the same baud rate as the DL20 or 1770-SB
Data Recorder. Check the baud rate of your computer using menu option
1 - Set Up Computer Serial Port.
•
Check Earth Ground Connection
Verify that the DL20’s earth ground (E. GND) is connected to earth
ground (preferably to the same ground as your computer).
•
Check Communication Link
Select menu option 2 - Terminal/Keyboard (2706-NK1) Mode to verify
that a communication link exists.
•
Check CONFIG.DAT File
Verify that your CONFIG.DAT file is configured for the same number of
lines as the DL20 to which you are downloading.
Use the DOS Type command to display the CONFIG.DAT file. The first
line displays the DL20 type (number of lines) the messages were
configured for.
•
Check Available RAM in Computer
Make sure your computer has enough RAM for the messages being
downloaded or you may get a Device I/O error. Check the size of your
messages using menu option 6 - Edit/Create Messages (Message Files).
•
Check ”Echo All to Slaves” Parameter on DL20
This parameter must be set to N. Check setting using menu option
2 - Terminal/Keyboard (2706-NK1) Mode and going to the Set up Master
Special Function within the display editor.
•
Disable Internal Modem (if necessary)
Verify that internal modem (e.g., internal modem of 1784-T45) is
disabled. Refer to DOS manual.
•
Check Track Setting on Data Recorder
If reading files to disk from a recorder, verify that the ”Track Select”
switch is set to the correct track.
Helpful Hints