Fuji Electric Monitouch S8 series, Connection Manual

Page: 388 / 406

Appendix 2 System Memory App2-5
•
Solution
1) Check if the communication settings of the S8 series and the connected device are matched.
2) Check the cable connection.
3) Data may be disrupted because of noise. Fix noise.
If you still cannot solve the error even after following the suggestions above, contact your local distributor.
$Pn: 493, 495
Periodical or synchronized reading set in the [Device Memory Map Setting] dialog is suspended.
- 0: Periodical/synchronized reading is performed.
- Other than 0: Periodical/synchronized reading is suspended.
•
Example: Periodical reading
If periodical reading of the device memory map is performed while the PLC2 memory is being accessed using a macro
command, the macro execution will be delayed (Fig. a). To avoid this, periodical reading can be suspended using
memory address $s762 (Fig. b).
PLC_CTL $u100 2
PLC_CTL $u110 2
PLC_CTL $u120 2
PLC_CTL $u300 2
T
t
PLC_CTL $u100 2
PLC_CTL $u110 2
PLC_CTL $u120 2
PLC_CTL $u300 2
T+t
T
T
$Pn:493=1
PLC_CTL $u100 2
PLC_CTL $u110 2
PLC_CTL $u120 2
PLC_CTL $u300 2
$Pn:493=0
$Pn:493=1
PLC_CTL $u100 2
PLC_CTL $u110 2
PLC_CTL $u120 2
PLC_CTL $u300 2
$Pn:493=0
t
Periodical reading
from the device
memory map
(Fig. a)
Execution of macro “a” Execution of macro “a”
Periodical reading from the
device memory map
Communication
cycle of the S8
Execution of macro “b” Execution of macro “b”
Periodical reading from the
device memory map
Periodical reading from
the device memory map
Communication
cycle of the S8
•
TEL_READ
•
TEL_WRITE
•
PLC_CTL
•
When PLC2 memory is used
by MOV, BMOV, BSET,BCLR,
BINV or other command.
(Fig. b)