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Author Topic: Do-More to Do-More using ECOM100  (Read 3976 times)

srgO

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Do-More to Do-More using ECOM100
« on: August 09, 2019, 07:03:20 PM »
I have two DL205 racks, each using a Do-More H2-DM1E CPU module, and each using H2-ECOM100 modules. Although I was able to use Peerlink via the built-in ethernet port on the Do-More CPUs, I'd like to transfer data via the ECOM100 modules. I've been using these instructions:

https://cdn.automationdirect.com/static/manuals/hxecomm/appxb.pdf

I've updated the firmware on both modules to Version 4.0.2146, and I set the Peerlink settings as follows:

V Memory Address: 0
Peerlink: Enabled

CPU1:
Block 0: Publish V0-V17

CPU2:
Block 1: Subscribe: V0-V17

I'm trying to read the data stored in V0-V17 on CPU1 from CPU2 using the MOVE instruction and can't read the data through CPU2. Is there something I'm missing?

Any help would be appreciated.
Thanks!



franji1

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Re: Do-More to Do-More using ECOM100
« Reply #1 on: August 10, 2019, 08:19:17 AM »
When doing peerlink via the ECOM100 module in a Do-more PLC, the peerlink is using DL legacy addressing.  So instead of PL, use DLV block in both PLCs.  Note that DLV block uses octal addressing since that is the legacy addressing of V memory in DirectLogic PLCs.  So the first block, based on your configuration, will show up in DLV0 through DLV17

b_carlton

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Re: Do-More to Do-More using ECOM100
« Reply #2 on: August 10, 2019, 01:03:45 PM »
In other words the ECOM100 itself is executing the Peerlink operations. The DoMore only has to provide read/write access to the DL typed memory.

Is there any instuction speed penalty in using the DL typed memory directly?

« Last Edit: August 10, 2019, 01:06:52 PM by b_carlton »
An output is a PLC's way of getting its inputs to change.

franji1

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Re: Do-More to Do-More using ECOM100
« Reply #3 on: August 10, 2019, 01:13:28 PM »
There is minimal overhead when the ECOM100 is doing the work.  There will be a slight hit if you did it from ladder logic.  The hit and logic get proportionally larger with each node.  But Peerlink just works, up to 16 publishing node and unlimited subscription nodes.  Easy peasy.