adccommunitymod (AutomationDirect) asked a question.
software bug or documentation error ?
Created Date: September 15,2009
Created By: perryjenkins
**** This post has been imported from our legacy forum. Information in this post may be outdated and links contained in the post may no longer work.****
I am using DS 5.3 with a DL06 and I am using V1242 to store data for manipulation . When I try to search for v1242 in my ladder it automatically converts it to CTA242 , the documentation (PLC/memory map) states counters only go to 177 on this processor , what gives ?
Created Date: September 15,2009
Created by: KPrice
perryjenkins, V1242 is not available for your use. It is used by the counters for the accumulated values. For example, CT0 usess V1000, CT1 uses V1001, CT242 uses V1242. Check the memory maps for user V-memory available. Hope this helps.
Created Date: September 15,2009
Created by: KPrice
Sorry, you 're right the counters go to CT177 hmmm?
Created Date: September 15,2009
Created by: franji1
It's a bug in DirectSOFT, but it only affects the display of the element with "aliases " enabled. V1242 is V1242, even if it's displayed as its (incorrect) alias of CTA242.
The 06 maps this area as User V, not counter memory. The low-level element server in DirectSOFT assumes that if V memory exists in the range of V1000 thru V1377, then this range is counter memory. The "alias " display logic changes the display text as if the V memory is a "counter accumulator ". V1242 on a 260, for example, is displayed correctly as CTA242 because the 260 memory map has counters from 0 thru 377. This does not affect the program (it is stored on disk and the PLC as the "opcode " V1242), but it does affect the display of the element in DirectSOFT (and DSData).
It's still V1242, even though it is displayed as CTA242. You could turn "aliases " off, but this would turn them off for everything (e.g. V0 is TA0, V40400 is VX0).
To see a detailed explanation of what "aliases " are and how they "help " with programming, bring up the DirectSOFT help system as search for "alias " and bring up the topic.
You could document the wiring info for V1242 "Not A Counter " :o
Created Date: September 16,2009
Created by: perryjenkins
thanks for the clarification.
Created Date: September 15,2009
Created by: perryjenkins
I am using DS 5.3 with a DL06 and I am using V1242 to store data for manipulation . When I try to search for v1242 in my ladder it automatically converts it to CTA242 , the documentation (PLC/memory map) states counters only go to 177 on this processor , what gives ?