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3 SPECIFICATION
3.5.2 Functions of the remote I/O signals
Device No.
RXn0
CH.
A/D Conversion
to
completion flag
RXn3
RXn4
to
CH.
range error flag
RXn7
2
E
PROM write error flag
RXnC
RXnF
Test mode flag
Initial data processing
RX(n+1)8
request flag
Initial data setting completion
RX(n+1)9
flag
Table 3.5 explains the functions of the remote I/O signals of the AJ65SBT-64AD.
Table 3.5 Remote I/O Signal Details (1/2)
Signal Name
The A/D conversion completion flag turns on at completion of the A/D conversion of
the corresponding channel when the initial data setting request flag (RY(n+1)9) turns
from off to on after power-on.
The A/D conversion completion flag processing is processed only once when the A/D
conversion enable/prohibit specification is changed.
When changing the A/D conversion from prohibit to enable:
When the average processing is specified, the flag turns on after completing the
average processing of the number of times or time, and storing the A/D conversion
digital value in the remote register.
When changing the A/D conversion from enable to prohibit:
The corresponding channel's A/D conversion completion flag turns off.
Turns on when the value set for input range setting is outside the setting range.
Turns on if all channels are not set to any of "user range settings 1 to 3" at offset/gain
setting (in the test mode).
Turns on if the number of E
channel). If this flag has turned on, this module itself has failed (hardware fault) and
therefore this flag cannot be reset (turned off) by the error reset request flag.
Turns on in the test mode.
(Used for interlock to prevent wrong output during offset/gain setting.)
After power-on, the initial data processing request flag is turned on by the AJ65SBT-
64AD to request the initial data to be set.
Also, after the initial data processing is complete (initial data processing completion
flag RY(n+1)8 ON), the flag is turned off.
Initial data processing request flag
Initial data processing completion flag
Initial data setting completion flag
CH.
When the initial data setting request (RY(n+1)9 ON) is made, the flag turns on after
the initial data setting completion is done.
Also, after the initial data setting is complete, the initial data setting completion flag
turns off when the initial data setting request flag turns off.
2
PROM write times exceeds its limit (100,000 times per
RX(n+1)8
RY(n+1)8
RX(n+1)9
RY(n+1)9
Initial data setting request flag
RX(n+1)B
Remote ready
RXn0 to RXn3
A/D conversion completion flag
: Performed by sequence ladder
: Performed by AJ65SBT-64AD
n: Address allocated to the master module by the station number setting.
3 - 11
MELSEC-A
Description
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