AB CompactLogix DeviceNet Adressing

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phophollety
Posts: 12
Joined: Thu Mar 05, 2015 6:49 pm

AB CompactLogix DeviceNet Adressing

Post by phophollety » Mon Jul 10, 2023 9:34 pm

Hello Mates,

first time developing with deviceNet, Im more used with S7 CPUs.

My system is a L23E CPU + PanelView 550 on devicenet.

I can't understand how to properly set the data mapping.
The HMI is getting reading shifted twice the address value.

Local:5:O.Data[2] on CPU is read on HMI as tag O:4
Local:5:O.Data[10] on CPU is read on HMI as tag O:20 the same for inputs.

I've set the deviceNet for 50 Words. So, a bunch of doubts:

#1 - devicenet is can based, which is has a payload of 8 bytes per message, should not everything being set in bytes?

#2 - I can't finde the EDS file for PV550 2711-K5A10 FW4.1 and newer

#3 - On logix5000 general tab of 1796-SDN input and output sizer are given in 32Bits words. For the panelBuilder in words (dont know if a 16 or 32 bit word). At rsnetworx for device I had to map as size 100, otherwise the scanned would give error 77 (Slave data Mismatch). Chaging the data alignment between pack/byte/word etc seems to have no changes in data packaging.

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#4 - Adding the networx file (.dnt) in logix has any usefulness? All my changes have to be made in rsnetworx anyway.

Greetings