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node-red-contrib-pccc
Advanced tools
A Node-RED node to interact with some Allen-Bradley PLCs using PCCC protocol
A Node-RED node to interact with some Allen-Bradley PLCs using PCCC protocol. Based on the awesome work of plcpeople/nodepccc.
You can install this node directly from the "Manage Palette" menu in the Node-RED interface. There are no external dependencies or compilation steps.
Alternatively, run the following command in your Node-RED user directory - typically ~/.node-red
on Linux or %HOMEPATH%\.nodered
on Windows
npm install node-red-contrib-pccc
Just drop a pccc in
node to read and watch addresses of the PLC, or a pccc out
node to write values to the PLC. Both of them need a pccc endpoint
, where you can configure the address of the PLC (IP Address, port, and routing), the cycle time and timeout values, and the list of addresses available on the PLC.
The addresses follow the same syntax of what would be used on RSLogix, so for example B3:0/0
addresses the bit 0 of byte 0 in the file B3, and F8:1
points to the float 1 at the file F8.
The configuration of routing follows a very special syntax for now
0x01,0x00,0x01,0x00
| | | |
| | | +-- 0: The slot of the PLC
| | +------- 1: Route over the backplane
| +------------ Reserved, always zero
+----------------- 1: Number of words (1 = 2 bytes) of the routing section
You most likely just want to change the last number to the slot of the PLC when connecting to ControlLogix/CompactLogix controllers
Please share your ideas and experiences on the Node-RED forum, or open an issue on the page of the project on GitHub
Copyright: (c) 2016-2021, ST-One Ltda.
GNU General Public License v3.0+ (see LICENSE or https://www.gnu.org/licenses/gpl-3.0.txt)
FAQs
A Node-RED node to interact with some Allen-Bradley PLCs using PCCC protocol
The npm package node-red-contrib-pccc receives a total of 35 weekly downloads. As such, node-red-contrib-pccc popularity was classified as not popular.
We found that node-red-contrib-pccc demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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