Control automation professionals with experience in PLCs, HMIs, and SCADA systems focusing on reliable control, operator UI, and field device integration.
Your Role | Primary Focus | Essential Pages | Advanced Topics | |
---|---|---|---|---|
Control Engineer | Field connectivity | Solution Lifecycle | P2: Process Modules | Alarms Module |
Allen-Bradley ControlLogix
Ethernet
3000ms
Your PLC IP
0
??????????????????????????????? ? Header (Title, Time, Alarms)? ??????????????????????????????? ? ? ? Main Process Graphic ? ? (P&ID representation) ? ? ? ??????????????????????????????? ? Navigation Bar ? ??????????????????????????????? |
Priority | Range | Color | Response Time | Consequence |
---|---|---|---|---|
Critical | 1-200 | Red | Immediate | Safety shutdown |
High | 201-400 | Orange | 10 minutes | Process upset |
Medium | 401-600 | Yellow | 30 minutes | Efficiency loss |
Low | 601-999 | Blue | Next shift | Maintenance required |
Tank Level Alarm Configuration:
Alarm | Trigger | Priority | Deadband | Delay On | Delay Off |
---|---|---|---|---|---|
HiHi | 95% | 250 | 2% | 5 sec | 3 sec |
Hi | 85% | 400 | 2% | 5 sec | 3 sec |
Lo | 15% | 400 | 2% | 5 sec | 3 sec |
LoLo | 5% | 250 | 2% | 5 sec | 3 sec |
public void PumpControl() { // Read process values float tankLevel = @Tag.Tank01.Level; float setpoint = @Tag.Tank01.Setpoint; bool pumpAvailable = @Tag.Pump01.Available; // Control logic if (pumpAvailable) { if (tankLevel < (setpoint - 5)) { @Tag.Pump01.StartCmd = true; @Tag.Pump01.Speed = CalculateSpeed(tankLevel, setpoint); } else if (tankLevel > (setpoint + 2)) { @Tag.Pump01.StartCmd = false; } } // Alarm generation if (!pumpAvailable && tankLevel < 10) { @Tag.Alarms.LowLevelNoPump = true; } } private float CalculateSpeed(float level, float sp) { float error = sp - level; return Math.Max(30, Math.Min(100, error * 5)); } |
Component | Configuration |
---|---|
Time Axis | Real-time (last hour), Historical (date range), Resolution (1 sec - 1 day) |
Y-Axes | Primary (0-100%), Secondary (0-150°F), Auto-scale option |
Pens | Multiple process values with distinct colors |
Area | Technique | Benefit |
---|---|---|
Scan Rates | Match process dynamics | Reduce network load |
Display Updates | Limit animations | Improve client performance |
Alarm Deadbands | Prevent chattering | Reduce alarm floods |
Script Efficiency | Avoid loops in expressions | Lower CPU usage |
PLC Type | Protocol | Default Settings |
---|---|---|
Allen-Bradley | EtherNet/IP | Slot 0, RPI 100ms |
Siemens | S7 TCP | Rack 0, Slot 2 |
Modbus Devices | Modbus TCP | Port 502, Unit ID 1 |
Schneider | Modbus TCP | Port 502, Holdings |
Omron | FINS | Port 9600, Node 1 |
Issue | Check | Solution |
---|---|---|
PLC won't connect | IP address, subnet | Verify network settings |
Tags not updating | Point mapping | Check addresses match PLC |
Alarms flooding | Deadband, delays | Adjust alarm settings |
HMI slow | Graphics complexity | Simplify animations |
Trends gaps | Historian settings | Check storage configuration |