Panasonic ELC500 User Manual page 184

Device No. Name
SR10 Normally-on relay
SR11 Normally-off relay
SR12 Scan relay
SR13 Initial pulse relay (ON)
SR14 Initial pulse relay (OFF)
Stepladder
SR15
Initial pulse relay (ON)
SR16 PB initial relay (ON)
SR17 PB initial relay (OFF)
0.01-second clock pulse
SR18
relay
0.02-second clock pulse
SR19
relay
0.1-second clock pulse
SR1A
relay
0.2-second clock pulse
SR1B
relay
1-second clock pulse
SR1C
relay
2-second clock pulse
SR1D
relay
1-minute clock pulse
SR1E
relay
Device No. Name
SR20 CPU operation modes
Operation program
SR21
memory
SR22 RTC data error
Power supply unit lifetime
SR23
warning
RTC backup battery
SR24
error flag (hold type)
RTC backup battery
SR25
error flag (current type)
SNTP time updating
SR26
failure
SNTP time update
SR27
completed
SR29 Forcing flag
SR2A Interrupt enable
SR2B Interrupt error flag
SR2C Interrupting flag
PB for execution at a
SR2D specified interval in
progress
Rewriting during RUN
SR2F
completed
Is normally on.
Is normally off.
Turns on or off in each scan.
Goes on for only the first scan after operation (RUN) has been started, and
goes off for the second and subsequent scans.
Goes off for only the first scan after operation (RUN) has been started, and
goes on for the second and subsequent scans.
Turns on in the first scan only, following startup of any single process,
during stepladder control.
Turns on at the start of execution of a program block. Turns off in the next
scan.
Turns off at the start of execution of a program block. Turns on in the next
scan.
Clock pulse with a 0.01-second cycle
Clock pulse with a 0.02-second cycle
Clock pulse with a 0.1-second cycle
Clock pulse with a 0.2-second cycle
Clock pulse with a 1-second cycle
Clock pulse with a 2-second cycle
Clock pulse with a 1-minute cycle
ON: RUN mode
OFF: PROG. mode
ON: SD memory card
OFF: ROM
Turns on if an error is detected in calendar timer data when the unit is
powered on.
Turns on when it is detected that a power supply unit is close to its lifetime.
Turns on when an RTC backup battery error is detected. The flag turns on if
the battery is out, even if battery error alarm is disabled in the configuration
menu. Once a battery error has been detected, this is held even after
recovery has been made. The flag is turned off when power supply is cut off.
Turns on when an RTC backup battery error is detected. Is off in the normal
status. The flag turns on if the battery is out, even if battery error alarm is
disabled in the configuration system register.
Turns on if acquisition of time data has failed during time synch via LAN
port. Turns off in normal conditions.
Turns off when time is being updated with SNTP, and turns on when the
update is completed.
Turns on while forced input/output operations are in progress.
Turns on when interrupt is enabled.
Turns on when an interrupt error occurs.
Turns on when an interrupt program is being executed. Only valid within a
PB for execution at a specified interval or within an INT program.
Turns on when a PB (program block) for execution at a specified interval is
being executed.
Turns on in the first scan only following completion of rewriting during RUN.
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ELC500 Control unit
Description
Description