AH500 Programming Manual
2-62
SR Function
CPU5×0-RS2
CPU5×0-EN
CPU5×1-RS2
OFF
ON
STOP
RUN
RUN
STOP
Attribute
Default
SR408
When the PLC runs, the value in SR408
increases by one every scan cycle. SR408
counts from 0 to 32767, and then from
○ ○ ○ ○ ○ 0 0 – R/W
0
*SR409
The pulse is ON for n seconds and is OFF
for n seconds during the 2n second clock
pulse. The interval n is stored in SR409,
and the setting range is 1~32767.
○ ○ ○ ○ ○ – – – R/W
30
*SR410
The pulse is ON for n milliseconds and is
OFF for n milliseconds during the 2n
millisecond clock pulse. The interval n is
stored in SR410.
○ ○ ○ ○ ○ – – – R/W
30
SR411
The current scan time is stored in SR411
and SR412, and
the unit of measurement is
100 microseconds. The value of the
millisecond is stored in SR411. (The range
is 0~65535.) The value of the microsecond
is stored in SR421. (The range is 0~900.).
For example, 12 is stored in SR411 and
300 is stored in SR412 when the current
scan time is 12.3 milliseconds.
○ ○ ○ ○ ○ 0 – – R 0
SR412 ○ ○ ○ ○ ○ 0 – – R 0
SR413
The maximum scan time is stored in SR413
and SR414, and the unit of measurement is
100 microseconds. The value of the
millisecond is stored in SR413.
○ ○ ○ ○ ○ 0 – – R 0
SR414 ○ ○ ○ ○ ○ 0 – – R 0
SR415
The maximum scan time is stored in SR415
and SR416, and the unit of measurement is
100 microseconds. The value of the
millisecond is stored in SR415.
○ ○ ○ ○ ○ 0 – – R 0
SR416 ○ ○ ○ ○ ○ 0 – – R 0
↓
PLC MAC address ○ ○ ○ ○ ○
MAC
add.
– – R
MAC
add.
↓
PLC serial number ○ ○ ○ ○ ○ SN – – R SN
*SR453
If an error occurs during the operation of the
memory card, the error code will be
○ ○ ○ ○ ○ – – – R 0
SR621
Interrupt character used in the instruction
RS (COM1)
○ ○ ○ ○ ○ – – – R/W
0
SR622
Interrupt character used in the instruction
RS (COM2)
○ × ○ × ○ – – – R/W
0
SR623
Bit 0~bit 15: The conditions of the interrupt
programs I0~I15 are set by the instruction
○ ○ ○ ○ ○ FFFF
– – R
FFF
F
SR624
Bit 0~bit 15: The conditions of the interrupt
programs I16~I31 are set by the instruction
○ ○ ○ ○ ○ FFFF
– – R
FFF
F
SR625
Bit 0~bit 15: The conditions of the interrupt
programs I32~I47 are set by the instruction
○ ○ ○ ○ ○ FFFF
– – R
FFF
F