adccommunitymod (AutomationDirect) asked a question.
Created Date: May 03,2011
Created By: joe_haase
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Allright everyone, I'm very "wet behind the ears " when it comes to Modbus. I have a DL06 and am trying to get it to play with HMIMax software for my PC. To start with.. I have a very basic program loaded to run the raw data of a pt100 into v400, and have a constant of 2500 loaded into v450 for testing. I will have to admit that I cut the end of my programming cable off to get it to connect to port2 of the PLC for modbus. I show a connection in the HMIMax software, but none of my values are showing up. under R:40000 - R:50000. Anyone know what I should be doing, or have any advice or testing tips?? Thanks.
Created Date: May 03,2011
Created by: bcarlton
1. Online manual for the DL-06 starting at page 4-12 (Network Slave Operation). The 'V ' registers don't show up as the same number in Modbus, good luck.
2. http://support.automationdirect.com/technotes.html - get AN-MISC-009 and AN-MISC-010. Good stuff.
3. Do you get any errors in response to requests? Check the server stats.
4. Check your wiring. How do you have it wired?
5. Check comm parameters.
6. Make sure to include the RTS/CTS loopback if you haven't directly wired to them.
7. I'm concerned that the tables in the DL-06 manual skip the mapping of V400 - V777 for Modbus equivalents. Try something inside the areas shown in those tables.
Created Date: May 04,2011
Created by: jackson
I'm guessing (since the documentation for that software you are using is very, very weak) but I think that you should use R:0256 for V400 and R:0296 for V450.
Created Date: May 03,2011
Created by: joe_haase
Allright everyone, I'm very "wet behind the ears " when it comes to Modbus.
I have a DL06 and am trying to get it to play with HMIMax software for my PC.
To start with.. I have a very basic program loaded to run the raw data of a pt100 into v400, and have a constant of 2500 loaded into v450 for testing.
I will have to admit that I cut the end of my programming cable off to get it to connect to port2 of the PLC for modbus.
I show a connection in the HMIMax software, but none of my values are showing up. under R:40000 - R:50000.
Anyone know what I should be doing, or have any advice or testing tips??
Thanks.