FSOE Qualifying Test case studies
FSOE Qualifying Test · Put your knowledge to work in context.
FSoE (Functional Safety over EtherCAT) is the safety communication layer specified in IEC 61784-3 (communication profile family 12) and published as an open specification by the EtherCAT Technology Group. The FSOE Qualifying Test checks whether you understand how that layer actually behaves - not whether you can recite a standard, but whether you can read a frame capture, follow a connection from session establishment through parameter and data exchange, and explain why a particular fault was detected, or was not. The FSOE Qualifying Test case studies are 5 cases and about 2,905 words.
1Retrofit press: SIL 2 claim from an FSoE light curtain
A retrofit of a 40-ton hydraulic press adds a Type 4 light curtain on the operator side. The risk assessment, done to IEC 62061, assigns the guarding function SIL 2 because the press has a 250 ms stopping performance and access is frequent.
667 words, about 3 min2Spare FSoE slice with a duplicate FSoE address
On a packaging line, six FSoE slaves are configured with FSoE addresses 1 to 6. The zone 1 infeed uses address 1, and the zone 5 guard uses a remote safety I/O slice at address 5.
599 words, about 3 min3CRC errors on a filling line with VFD-induced disturbances
On a filling line, 12 FSoE slaves exchange safety data every 2 ms through an EtherCAT segment that also carries three variable-frequency drives. The safety function is a SIL 2 guard-locking function with a 300 ms stop time.
574 words, about 3 min4Robot cell parameter-phase timeout after power-up
A robotic cell uses an FSoE master in a safety PLC and an FSoE slave in a robot controller. The FSoE watchdog is 80 ms and the FSoE cycle is 4 ms.
553 words, about 3 min5Conveyor E-stop delay with EtherCAT working-counter errors
A conveyor network has four EtherCAT segments joined by three couplers. A SIL 2 emergency-stop function uses FSoE remote I/O on segment 4 and the FSoE master in the central PLC.
512 words, about 3 min