4. SETTING AND PROCEDURE BEFORE OPERATION
MELSEC-A
4-4
No. Name
Description
5)
UP/DOWN
switch
UP
DOWN
Increase/decrease the offset value/gain value of the channel selected by the mode switch.
ON for less than 1.5 seconds : increase/decrease 0.025 °C at a time.
ON for more than 1.5 seconds : increase/decrease 0.1 °C per 0.04 seconds.
6)
Reset switch
RESET
Hardware reset
Initialize the remote register and operation processing of AJ65BT-68TD.
The initial data processing request flag turns on by turning the switch on.
7)
LED for
operation
status display
PW
RUN
L RUN
SD
RD
L ERR.
8)
Terminal block
1
3
5
7
9
11
13
15
17
19
21
23
25
27
2
4
6
8
10
12
14
16
18
20
22
24
26
DA
DG
DB
SLD
(FG)
+24V
24G
CH8+
CH7+
CH6+
CH5+
CH4+
CH3+
CH2+
CH1+
RTD
RTD
CH8-
CH7-
CH6-
CH5-
CH4-
CH3-
CH2-
CH1-
9)
Temperature-
measuring
resistor Pt 100
The temperature-measuring resistor to measure the terminal block temperature. (Supplied with the module)
ON : Power is on
OFF : Power is off
Normal
mode
ON
: Normal operation
Flicker : Read data error occurred
OFF
: 24 V DC power failure or WDT error
RUN
Test mode
Flickers : When the offset/gain setting switch is set at OFFSET or GAIN
Flickers at 0.5-second intervals during normal error compensation
Flickers at 0.1-second intervals when the following invalid error compensation has
been attempted:
•
A temperature conversion value out of the temperature input range was set.
•
Setting was made so that the gain value minus the offset value is smaller
than 10
°
C.
∗
In this case, the offset or gain value will not be set even if the offset/gain
setting switch is set at SET.
OFF: The offset/gain setting switch is set at SET
L RUN
ON : Normal communication
OFF : Communication disconnected (time over error)
SD
Turns on during data transmission
RD
Turns on during data receiving
L ERR.
ON
: Communication data error (CRC error)
Station number, baud rate switch setting error
Flicker : Station number or baud rate switch is changed
OFF
: Normal communication
PW
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