Fuji Electric Monitouch S8 series, Connection Manual

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1.5 Settings for the Connected Device 1-17
*1 Watchdog
When the PLC is communicating with MONITOUCH, there is no means for the PLC to know whether or not MONITOUCH is doing
operations correctly.
To solve this one-way communication, change data in bits 0 to 7 in [Read Area] “n” and check that the same data is saved in bits 0 to 7 in
[Write Area] “n”. This proves that the S8 series is correctly doing operations through communications with the PLC. This verification is
called “watchdog”.
*2 Display scanning
This operation can be utilized for display scanning. Change data in bits 0 to 7 in [Read Area] “n” when giving a graphic change command
and check that the same data is saved in bits 0 to 7 in [Write Area] “n”. This can prove that the graphic change command is received and
executed correctly.
*3 If this bit is used during constant sampling, data sampling timing may be shifted. If this bit is set during constant sampling, we
recommend you to reset the sampling as well.
Read area “n” (sub command/data)
(1) Free
When data is saved in this area, the same data is written to [Write Area] “n” after the screen has been
displayed. Utilizing this operation, these bits can be used for watch dog monitoring
*1
or display scanning
*2
.
(2) BZ0 A beep (peep) sounds at the leading edge [0
→
1].
(3) BZ1 An error buzzer (peep-peep) sounds at the leading edge [0
→
1].
(4) BZ2
A buzzer (ffeee) sounds continuously while the bit remains [1].
When setting this bit, check [Use Continuous Buzzer Sound] ([System Setting]
→
[Unit Setting]
→
[General
Setting])
(5) Calendar setting
*3
This bit is valid when the built-in clock is not used. This bit should be used differently depending on whether
the connecting PLC is equipped with the calendar function.
When MONITOUCH is connected to a PLC with calendar function:
When calendar data in the PLC is updated, it can forcibly be read by setting this bit (at the leading edge of [0
→
1]).
In addition to calendar data update using this bit, calendar data in the PLC is automatically read and updated
when:
• The power is turned on.
• STOP
→
RUN
• The date changes (AM 00:00:00).
When MONITOUCH is connected to a PLC without calendar function:
A virtual calendar area can be provided by setting [Calendar memory] in the [GD-80 Compatible] tab window
([Read/Write Area]
→
[GD-80 Compatible]). Then setting this bit (ON) updates the calendar data.
(6) System reserved This bit is reserved by the system. This bit must be “0”.
(2) BZ0 [0
→
1] (leading edge)
(1) Free
(3) BZ1 [0
→
1] (leading edge)
(4) BZ2 [1] (level)
(5) Calendar setting ([0
→
1] (leading edge)
(6) System reserved
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
0 0 0 0 0 0 0 0 0 0 0 0
A-1 A-2 A-3 A-4 A-5
B-1 B-2 B-3 B-4 B-5
C-1 C-2 C-3 C-4 C-5
D-1 D-2 D-3 D-4 D-5
Change data in [Read Area] “n”. (Bits 0 to 7)
Data in [Write Area] “n” is changed. (Bits 0 to 7)
MONITORING
A-1 A-2 A-3 A-4 A-5
B-1 B-2 B-3 B-4 B-5
C-1 C-2 C-3 C-4 C-5
D-1 D-2 D-3 D-4 D-5
[A-1] to [A-5]
ON-display commands
+
Change data in [Read Area] “n”.
(Bits 0 to 7)
Data in [Read Area] “n”
(Bits 0 to 7)
=
Data in [Write Area] “n”
(Bits 0 to 7)
[A-1] to [A-5] ON-display: Normal termination
MONITORING