PCS Node-RED SNMP Dashboard

This folder contains an importable Node-RED dashboard flow that polls PCS transmitter SNMP telemetry using the PCS-ELECTRONICS-MIB.

Files

• pcs-transmitter-snmp-dashboard-flow.json: Full flow export with SNMP polling + dashboard gauges/text/charts.
• pcs-electronics.mib: Local MIB copy used by the flow.
• poll_pcs_snmp.sh: Script called by the Node-RED exec node.

Prerequisites

Install these on the Node-RED host:

• Node.js + npm
• Node-RED (node-red command in PATH)
• Node-RED Dashboard plugin (node-red-dashboard)
• Net-SNMP CLI tools (snmpget in PATH)
• Network access to transmitter SNMP endpoint (UDP 161)

Example install commands:

npm install -g --unsafe-perm node-red
cd ~/.node-red
npm install node-red-dashboard

Manual Import (Required)

1. Start Node-RED.
2. Open the editor (default: http://127.0.0.1:1880).
3. Menu -> Import.
4. Import file: pcs-node-red/pcs-transmitter-snmp-dashboard-flow.json.
5. Click Deploy.
6. Open dashboard UI: http://127.0.0.1:1880/ui.

Configure

Open flow tab PCS Transmitter SNMP and adjust environment values:

• PCS_TX_IP (default: 192.168.1.140)
• PCS_SNMP_COMMUNITY (default: public)
• PCS_MIB_DIR (default path points to this folder)

PCS_MIB_DIR must contain pcs-electronics.mib.

Notes

• Polling interval is 30 seconds.
• SNMP polling is chunked to max 5 OIDs per snmpget request.
• If symbolic MIB lookup fails, script falls back to numeric OIDs.
• If SNMP returns errors, check SNMP stderr and SNMP return code debug nodes.
• The Node-RED dashboard, flows, and helper scripts in this folder are AI generated.