Fault diagnosis & solution advisory for industrial automation: communications, legacy gear, software/SCADA, HMI, redundancy & ISA standards. Got the same issue? Send it for a fast response.
Cut downtime: controller/network (DLR/PRP-HSR)/SCADA redundancy, load balancing for web HMI & historian…
Gray background, color only for abnormal, Level 1–4 hierarchy, situational awareness — fewer operator errors…
End alarm floods: philosophy, rationalization, priority, metrics (alarm rate, standing/chattering)…
Upload programs from devices, save drive parameters, document them — before the PLC/HMI dies…
SECS/GEM, IPC-CFX (AMQP), IPC-Hermes-9852, SMEMA… unified into Ignition via OPC UA, MQTT/Sparkplug, AMQP, scripting.
BF red on CPU/DP master means a bus fault. Quick checklist: terminator, address, cable, noise…
OPC Classic (DA) permission errors after a Windows upgrade. How to set DCOM, firewall, accounts…
Legacy Siemens software on new PCs: virtual machine, compatibility, PC-Adapter cable…
Legacy Rockwell SCADA can still run: compatibility, license, path to FactoryTalk…
Lost frame / wrong Working Counter: cable, EMC, DC sync, ESC, EL terminal order…
Indramat servos (now Bosch Rexroth): the F8 fault group, power, feedback, sourcing parts…
Legacy Allen-Bradley HMI: power, firmware, recover/clone the memory card…
WAGO 750 coupler red LED: duplicate node-ID, wrong baud, missing 120Ω terminator, EDS…
Coasters/swings/Disk'O (Zamperla/Vekoma…): HMI, PLC, I/O, drive, sensor faults — safety via the formal channel.
PET beverage line: HMI, servo, sensors, comms between blow-fill-cap blocks…
Master timeout/CRC error: A/B swapped, 120Ω terminator, baud/parity, register offset…
NET red, node dropped: duplicate MAC, baud mismatch, 121Ω terminator, 24V bus power…
Handheld/AMS can't see the transmitter: 250Ω resistor, loop power, polling address, DD/DTM…
HVAC controller missing from BMS: duplicate Device Instance, MS/TP MAC/baud, BBMD/subnet…
I/O won't come up in Logix: IP/subnet, RPI, duplicate IP, EDS/AOP, switch & IGMP multicast…
IO-Device won't come up: missing/wrong device name, IP, GSDML, topology/LLDP, cable & port…
Process: segment power, terminator, polarity, duplicate tag, DD on the DCS…
Slave won't come up: address 0/duplicate, dedicated AS-i power, yellow cable wiring, profile…
Sensor not detected: port class A/B, C/Q pin cable, IODD, parameter data storage…
Can't read electricity/water/heat meters: primary/secondary, 2400 baud, unit load, converter…