Computer Hardware User Manual

3-5-13 Cycle Time Flag

AR 2405 turns ON when the cycle time set with SCAN(18) is shorter than the

actual cycle time.

AR 2405 is refreshed every cycle while the PC is in RUN or MONITOR mode.

3-5-14 Link Unit Mounted Flags

The following flags indicate when the specified Link Units are mounted to the

Racks. (Refer to 3-5-15 CPU Unit-mounting Device Mounted Flag for CPU Unit-

mounting Host Link Units.) These flags are refreshed every cycle.

Name Bit Link Unit

SYSMAC LINK/SYSMAC NET Link Unit

Level 1 Mounted Flag

AR 2408 SYSMAC LINK/SYSMAC NET Link Unit in operating level 1

SYSMAC LINK/SYSMAC NET Link Unit

Level 0 Mounted Flag

AR 2409 SYSMAC LINK/SYSMAC NET Link Unit in operating level 0

Rack-mounting Host Link Unit Level 1 AR 2413 Rack-mounting Host Link Unit in operating level 1

Rack-mounting Host Link Unit Level 0 AR 2414 Rack-mounting Host Link Unit in operating level 0

3-5-15 CPU Unit-mounting Device Mounted Flag

AR 2415 turns ON when any device is mounted directly to the CPU Unit. This

includes CPU Unit-mounting Host Link Units, Programming Consoles, and In-

terface Units. This flag is refreshed every cycle.

3-5-16 FPD Trigger Bit

AR 2508 is used to adjust the monitoring time of FPD(––) automatically. Refer to

5-25-12 FAILURE POINT DETECT – FPD(––) for details.

3-5-17 Data Tracing Flags and Control Bits

The following control bits and flags are used during data tracing with TRSM(45).

The Tracing Flag will be ON during tracing operations. The Trace Completed

Flag will turn ON when enough data has been traced to fill Trace Memory.

Bit Name

AR 2512 Trace Completed Flag

AR 2513 Tracing Flag

AR 2514 Trace Trigger Bit (writeable)

AR 2515 Sampling Start Bit (writeable)

Note Refer to 5-25-3 TRACE MEMORY SAMPLING – TRSM(45) for details.

3-5-18 Cycle Time Indicators

AR 26 contains the maximum cycle time that has occurred since program execu-

tion was begun. AR 27 contains the present cycle time.

Both times are to tenths of a millisecond in 4-digit BCD (000.0 ms to 999.9 ms),

and are refreshed every cycle.

AR (Auxiliary Relay) Area Section 3-5