node-red-contrib-sm-3relind

This is the node-red node to control Sequent Microsystems Three 40A/240V Relays RS485 Daisy-chainable HAT for Raspberry Pi.

Manual Install

Clone or update the repository, follow the instructions from the first page.

In your node-red user directory, tipicaly ~/.node-red,

~$ cd ~/.node-red

Run the following command:

~/.node-red$ npm install ~/3relind-rpi/node-red-contrib-sm-3relind

In order to see the node in the palette and use it you need to restart node-red. If you run node-red as a service:

~$ node-red-stop
~& node-red-start

Usage

After install and restart the node-red you will see on the node palete, under Sequent Microsystems category the "3relind" and "3relindrd" nodes.

3relind node

This node will turn on or off a relay or all relays as a 3 bits bitmap. The card address and relay number can be set in the dialog screen or dinamicaly thru msg.address and msg.relay. The output of one relay or all 3 relays if you set the relay number to 0, can be set dynamically using msg.payload.

3relindrd node

This node will read one relay state or all relays states as a 3 bits bitmap. The card address and relay number can be set in the dialog screen or dinamicaly thru msg.address and msg.relay and the state is output as msg.payload .If you set the relay number to 0 the node will output the state of all relays.

Important note

This node is using the I2C-bus package from @fivdi, you can visit his work on github here. The inspiration for this node came from @nielsnl68 work with node-red-contrib-i2c. We thank them for the great job.