Quickpanel DH+ and Controllogix addressing

[Hussey]

Does anyone have a source for addressing structure for communicating between an A/B controllogix processor via a DHRIO card to a Quickpanel touchscreen?

 

[Ken Roach]

The basics of PLC/SLC address mapping were recently discussed on this forum in this thread:

http://www.plctalk.net/qanda/showthread.php?s=&threadid=2718

The additional trick you'll use that paneltec didn't have to is to tell the 1756-DHRIO what slot the ControlLogix CPU is in.

A-B devices that support the CIP protocols (like ControlLogix) can describe the backplane path from the DHRIO to the processor, but most 3rd party drivers expect the DH+ node to be built into the processor like on a PLC-5 or SLC-5/04.

Right-click on the DHRIO in any RSWho browse, select Module Configuration, and I recall that the "Default Slot" value is on the general parameters page.

 

[RussB]

DHRIO and Quick Panel

This is from the Quick Designer Software Help. Access this help from the Protocol setup dialog box.

  Remote I/O Tag Variable Table
          Device           Address    Bit     Bit    DataData Data
          Read  Description
          Prefix Range    delimiter   Range  Range  Data
                                       Min.    Max.          Words
          I:    0-377     /    0-17  -32768  32767  16  Both Inputs
          O:    0-377     /    0-17  -32768  32767  16  Read Outputs  Doubles
          AI:   0-376     n/a  n/a   0       99999999   32   Both Double Inputs BCD
          AO:   0-376     n/a  n/a   0       99999999   32   Read Double Outputs BCD
          LI:   0-376     n/a  n/a   -99999999      99999999 32   Both  Long Inputs
          LO:   0-376     n/a  n/a   -99999999      99999999 32   Read  Long Outputs
          ABR@  0.0-3771.63    n/a   n/a     0      99999999 32   Both  Double BTR-1
          ABW@  0.0-3771.63    n/a   n/a     0      99999999 32   Read  Double BTW-1
          LBR@  0.0-3771.63    n/a   n/a     -99999999  99999999  32    Both      Long BTR-1
          LBW@  0.0-3771.63    n/a   n/a     -99999999  99999999  32    Read      Long BTW-1
	  The device prefix and address delimiter are shown together. 
          Example, AO: where AO is the prefix and : is the delimiter. 
          Note the delimiter for the BTR and BTW  types is the @. 
          The address syntax is rrgs.oo (rr = rack (octal), g = group, s = slot, oo = offset (decimal))
          Double block transfer variables require proper setup of the 
          actual block transfer in the protocol setup.

There is Much more there.

 

[Hussey]

Thanks guys, we'll give it a try.