Benchmarks

117 tasks across 10 domains. A task's URL is its suite id and does not move, because published results cite it. The catalog tracks the working tree; the archived release carries its own counts, listed under Citing.

language	tasks
FBD	5
IL	3
LD-graphical	53
LD-textual	20
SFC	3
ST	33

validation status	tasks
candidate	70
validated	47

building automation

id	name	language	difficulty	status
airlock_pressure_interlock	Cleanroom airlock door interlock	ST	easy	candidate
g_building_lighting	building lighting interlock (graphical LD)	LD-graphical	easy	validated
g_comb_mixed	comb mixed (graphical LD twin)	LD-graphical	easy	validated
g_comb_or	comb or (graphical LD twin)	LD-graphical	easy	validated
g_door_reversal	sectional door with photo-eye reversal	LD-graphical	easy	validated
intrusion_dual_alarm	Intrusion latch with siren and door-lock annunciation	LD-textual	easy	validated
kiln_door_lockout	Industrial kiln door safety latch	ST	medium	candidate
ld_comb_mixed	comb mixed (K-LD feature benchmark)	LD-textual	easy	validated
ld_comb_or	comb or (K-LD feature benchmark)	LD-textual	easy	validated
st_door_reversal	sectional door with photo-eye reversal (ST twin)	ST	easy	candidate

chemical batch

id	name	language	difficulty	status
fbd_reactor_2oo3	Two-out-of-three overpressure trip (FBD)	FBD	medium	candidate
g_batch_mixer	batch mixer interlock (graphical LD)	LD-graphical	medium	validated
g_batch_reactor	batch reactor interlock (graphical LD)	LD-graphical	medium	validated
g_independent_hp_trip	independent high-pressure trip (graphical LD)	LD-graphical	medium	validated
g_phase_hold_permissive	ISA-88 phase hold on permissive loss (graphical LD)	LD-graphical	medium	validated
g_vessel_empty_permissive	reactor charge vessel-empty permissive (graphical LD)	LD-graphical	medium	validated
mixer_lid_stall_interlock	Batch mixer lid/stall dual interlock	ST	easy	candidate
reactor_pressure_lockout	Chemical reactor overpressure lockout	ST	medium	candidate
sfc_batch_fill_drain	Batch fill and drain cycle (SFC)	SFC	easy	candidate

elevator

id	name	language	difficulty	status
elevator_door_motion_interlock	Elevator door/motion dual interlock	ST	easy	candidate
g_ctd_load	ctd load (graphical LD twin)	LD-graphical	medium	candidate
g_elevator_door	elevator door interlock (graphical LD)	LD-graphical	easy	validated
g_timer_latch_mix	timer latch mix (graphical LD twin)	LD-graphical	medium	candidate
ld_ctd_load	ctd load (K-LD feature benchmark)	LD-textual	easy	validated
ld_timer_latch_mix	timer latch mix (K-LD feature benchmark)	LD-textual	easy	candidate
sfc_elevator_door	Car door cycle with a stored action (SFC)	SFC	medium	candidate

hvac

id	name	language	difficulty	status
fbd_fan_damper	Fan and damper permissive (FBD)	FBD	easy	candidate
g_burner_purge	burner purge, light-off and lockout	LD-graphical	easy	validated
g_hvac_fan_delay	hvac fan delay interlock (graphical LD)	LD-graphical	easy	validated
g_tof_hold	tof hold (graphical LD twin)	LD-graphical	medium	candidate
g_ton_single	ton single (graphical LD twin)	LD-graphical	easy	candidate
ld_tof_hold	tof hold (K-LD feature benchmark)	LD-textual	easy	candidate
ld_ton_single	ton single (K-LD feature benchmark)	LD-textual	easy	candidate
purge_fault_lockout	Burner pre-ignition purge fault lockout	LD-textual	easy	validated
st_burner_purge	burner purge, light-off and lockout (ST twin)	ST	easy	candidate

manufacturing

id	name	language	difficulty	status
counter_scalability	counter scalability	ST	medium	candidate
fbd_comb_and	comb and (Function Block Diagram rendering)	FBD	easy	candidate
fbd_counter_reset	counter with reset-to-value (Function Block Diagram)	FBD	easy	candidate
g_comb_and	comb and (graphical LD twin)	LD-graphical	easy	validated
g_compressor_cycle	air compressor load/unload with minimum-off interlock	LD-graphical	easy	validated
g_conveyor_interlock	conveyor interlock interlock (graphical LD)	LD-graphical	medium	validated
g_guard_lock	interlocked guard with rundown timer	LD-graphical	easy	validated
g_ppu_evolution_1	PPU LD evolution 1 (graphical LD)	LD-graphical	easy	candidate
g_two_hand	two-hand control on a power press, Type II	LD-graphical	easy	validated
g_two_hand_fb	two-hand control as a function block	LD-graphical	medium	candidate
hoist_overload_cutoff	Crane hoist overload cutoff	ST	easy	candidate
il_comb_and	comb and (Instruction List rendering)	IL	easy	candidate
il_counter_reset	counter with reset-to-value (Instruction List)	IL	easy	candidate
ld_comb_and	comb and (K-LD feature benchmark)	LD-textual	easy	validated
ld_ton_chain2	ton chain2 (K-LD feature benchmark)	LD-textual	easy	candidate
sfc_counter_reset	counter with reset-to-value (Sequential Function Chart)	SFC	easy	candidate
st_comb_and	comb and (Structured Text rendering)	ST	easy	candidate
st_compressor_cycle	air compressor load/unload with minimum-off interlock (ST twin)	ST	easy	candidate
st_counter_reset	counter with reset-to-value (Structured Text)	ST	easy	candidate
st_guard_lock	interlocked guard with rundown timer (ST twin)	ST	easy	candidate
st_three_pump_lockout	Three-pump station lockout	ST	medium	candidate
st_two_hand	two-hand control on a power press, Type II (ST twin)	ST	easy	candidate
welder_gas_shield_interlock	MIG welder shielding-gas interlock	ST	easy	candidate

motor control

id	name	language	difficulty	status
fbd_seal_in	seal in (Function Block Diagram rendering)	FBD	easy	candidate
g_estop_reset	emergency stop with monitored manual reset	LD-graphical	easy	validated
g_failsafe_motor_latch	Fail-Safe Motor Latch	LD-graphical	easy	validated
g_fwd_rev_interlock	FWD/REV Motor Interlock	LD-graphical	easy	candidate
g_motor_interlock	Forward/reverse motor interlock (graphical LD)	LD-graphical	easy	validated
g_seal_in	seal in (graphical LD twin)	LD-graphical	easy	validated
g_star_delta	star-delta starter with open transition	LD-graphical	easy	validated
g_start_cycle	Start/stop cycle controller (graphical LD)	LD-graphical	easy	candidate
g_stop_eq	Stop-on-equal comparison cycle (graphical LD)	LD-graphical	easy	candidate
il_seal_in	seal in (Instruction List rendering)	IL	easy	candidate
ld_latch_basic	latch basic (K-LD feature benchmark)	LD-textual	easy	validated
ld_seal_in	seal in (K-LD feature benchmark)	LD-textual	easy	validated
motor_interlock	Forward/reverse motor interlock	ST	easy	candidate
st_estop_reset	emergency stop with monitored manual reset (ST twin)	ST	easy	candidate
st_seal_in	seal in (Structured Text rendering)	ST	easy	candidate
st_star_delta	star-delta starter with open transition (ST twin)	ST	easy	candidate

packaging

id	name	language	difficulty	status
conveyor_jam_lockout	Packaging conveyor jam lockout	ST	medium	candidate
g_ctu_saturate	ctu saturate (graphical LD twin)	LD-graphical	medium	candidate
g_ftrig_edge	ftrig edge (graphical LD twin)	LD-graphical	easy	validated
g_packaging_filler	packaging filler interlock (graphical LD)	LD-graphical	medium	validated
g_tp_pulse	tp pulse (graphical LD twin)	LD-graphical	medium	candidate
ld_ctu_saturate	ctu saturate (K-LD feature benchmark)	LD-textual	easy	validated
ld_ftrig_edge	ftrig edge (K-LD feature benchmark)	LD-textual	easy	validated
ld_tp_pulse	tp pulse (K-LD feature benchmark)	LD-textual	easy	candidate
reject_gate_triple_output	Reject gate fault latch with gate, counter, and line-stop readouts	LD-textual	easy	validated

power substation

id	name	language	difficulty	status
breaker_earth_trip_interlock	Substation breaker closing-coil dual interlock	ST	easy	candidate
g_bus_coupler_changeover	bus coupler auto-changeover (graphical LD)	LD-graphical	medium	validated
g_busbar_interlock	busbar interlock (graphical LD)	LD-graphical	medium	validated
g_dead_bus_close_check	dead bus / synchro-check close permissive (graphical LD)	LD-graphical	medium	validated
g_substation_breaker	substation breaker interlock (graphical LD)	LD-graphical	medium	validated
g_transformer_protect	transformer protect interlock (graphical LD)	LD-graphical	medium	validated
g_trip_lockout_86	trip lockout relay (86) reclose block (graphical LD)	LD-graphical	medium	validated
protection_lockout_cascade	Protection trip cascading through a lockout latch to breaker close	LD-textual	medium	validated

traffic

id	name	language	difficulty	status
g_rtrig_edge	rtrig edge (graphical LD twin)	LD-graphical	easy	validated
g_traffic_light	traffic light interlock (graphical LD)	LD-graphical	easy	validated
g_traffic_light_pedestrian	Traffic light sequence with pedestrian button (graphical LD / FB)	LD-graphical	medium	candidate
ld_edge_counter	edge counter (K-LD feature benchmark)	LD-textual	easy	candidate
ld_rtrig_edge	rtrig edge (K-LD feature benchmark)	LD-textual	easy	validated

water treatment

id	name	language	difficulty	status
chemical_feed_fault_lockout	Chemical dosing overdose lockout with lamp and pump-inhibit readouts	LD-textual	easy	validated
dosing_pump_lockout	Water treatment dosing pump fault lockout	ST	medium	candidate
g_pump_alternation	duty-standby pump station with alternation	LD-graphical	medium	validated
g_tank_assignment	Tank valve controller — assignment (graphical LD)	LD-graphical	medium	candidate
g_tank_start_eq	Tank valve controller — start eq (graphical LD)	LD-graphical	medium	candidate
g_tank_start_le	Tank valve controller — start le (graphical LD)	LD-graphical	medium	candidate
g_tank_stop_ge	Tank valve controller — stop ge (graphical LD)	LD-graphical	medium	candidate
g_tank_sub_function	Tank valve controller — sub function (graphical LD)	LD-graphical	medium	candidate
g_tank_substitution_coil	Tank valve controller — substitution coil (graphical LD)	LD-graphical	medium	candidate
g_tank_value_filtering	Tank valve controller — value filtering (graphical LD)	LD-graphical	medium	candidate
g_tank_valves	Tank valve controller — valves handler (graphical LD)	LD-graphical	medium	candidate
sensor_forge	sensor forge	ST	medium	candidate
st_pump_alternation	duty-standby pump station with alternation (ST twin)	ST	medium	candidate
st_quad_valve_lockout	Four-way header selector valve lockout	ST	medium	candidate
st_swat_eq1	SWaT multi-PLC level control — EQ1	ST	hard	candidate
st_swat_ge1	SWaT multi-PLC level control — GE1	ST	hard	candidate
st_swat_le1	SWaT multi-PLC level control — LE1	ST	hard	candidate
st_swat_level1	SWaT multi-PLC level control — level1	ST	hard	candidate
st_swat_sub1	SWaT multi-PLC level control — sub1	ST	hard	candidate
st_swat_timer1	SWaT multi-PLC level control — timer1	ST	hard	candidate
tank_overflow	tank overflow	ST	medium	candidate