3. SPECIFICATIONS
MELSEC-A
3-8
3.8
I/O Signals in Respect to the Master Module
The assignment of I/O signals and the functions is explained.
3.8.1
I/O signal list
The AJ65BT-68TD uses 128 points for input and 128 points for output in respect to the data for the
master module.
The I/O signal assignment and the name of each signal are shown in the table below.
Device RX indicates an input signal to the master module from the AJ65BT-68TD, and device RY
indicates an output signal from the master module to the AJ65BT-68TD.
Signal direction : AJ65BT-68TD
→
Master module
Signal direction : Master module
→
AJ65BT-68TD
Device No.
Signal name
Device No.
Signal name
RXn0
CH.1 conversion completion flag
RYn0
CH.1 conversion enable flag
RXn1
CH.2 conversion completion flag
RYn1
CH.2 conversion enable flag
RXn2
CH.3 conversion completion flag
RYn2
CH.3 conversion enable flag
RXn3
CH.4 conversion completion flag
RYn3
CH.4 conversion enable flag
RXn4
CH.5 conversion completion flag
RYn4
CH.5 conversion enable flag
RXn5
CH.6 conversion completion flag
RYn5
CH.6 conversion enable flag
RXn6
CH.7 conversion completion flag
RYn6
CH.7 conversion enable flag
RXn7
CH.8 conversion completion flag
RYn7
CH.8 conversion enable flag
RXn8
CH.1 wire breakage detection flag
RYn8
CH.1 sampling/travel average processing designation flag
RXn9
CH.2 wire breakage detection flag
RYn9
CH.2 sampling/travel average processing designation flag
RXnA
CH.3 wire breakage detection flag
RYnA
CH.3 sampling/travel average processing designation flag
RXnB
CH.4 wire breakage detection flag
RYnB
CH.4 sampling/travel average processing designation flag
RXnC
CH.5 wire breakage detection flag
RYnC
CH.5 sampling/travel average processing designation flag
RXnD
CH.6 wire breakage detection flag
RYnD
CH.6 sampling/travel average processing designation flag
RXnE
CH.7 wire breakage detection flag
RYnE
CH.7 sampling/travel average processing designation flag
RXnF
CH.8 wire breakage detection flag
RYnF
CH.8 sampling/travel average processing designation flag
RX (n+1) 0
CH.1 measurement range over flag (lower limit)
RY (n+1) 0
CH.1 type "K" thermocouple selection flag
RX (n+1) 1
CH.1 measurement range over flag (upper limit)
RY (n+1) 1
CH.1 type "E" thermocouple selection flag
RX (n+1) 2
CH.2 measurement range over flag (lower limit)
RY (n+1) 2
CH.1 type "J" thermocouple selection flag
RX (n+1) 3
CH.2 measurement range over flag (upper limit)
RY (n+1) 3
CH.1 type "T" thermocouple selection flag
RX (n+1) 4
CH.3 measurement range over flag (lower limit)
RY (n+1) 4
CH.1 type "B" thermocouple selection flag
RX (n+1) 5
CH.3 measurement range over flag (upper limit)
RY (n+1) 5
CH.1 type "R" thermocouple selection flag
RX (n+1) 6
CH.4 measurement range over flag (lower limit)
RY (n+1) 6
CH.1 type "S" thermocouple selection flag
RX (n+1) 7
CH.4 measurement range over flag (upper limit)
RY (n+1) 7
Use prohibited
RX (n+1) 8
CH.5 measurement range over flag (lower limit)
RY (n+1) 8
CH.2 type "K" thermocouple selection flag
RX (n+1) 9
CH.5 measurement range over flag (upper limit)
RY (n+1) 9
CH.2 type "E" thermocouple selection flag
RX (n+1) A
CH.6 measurement range over flag (lower limit)
RY (n+1) A
CH.2 type "J" thermocouple selection flag
RX (n+1) B
CH.6 measurement range over flag (upper limit)
RY (n+1) B
CH.2 type "T" thermocouple selection flag
RX (n+1) C
CH.7 measurement range over flag (lower limit)
RY (n+1) C
CH.2 type "B" thermocouple selection flag
RX (n+1) D
CH.7 measurement range over flag (upper limit)
RY (n+1) D
CH.2 type "R" thermocouple selection flag
RX (n+1) E
CH.8 measurement range over flag (lower limit)
RY (n+1) E
CH.2 type "S" thermocouple selection flag
RX (n+1) F
CH.8 measurement range over flag (upper limit)
RY (n+1) F
Use prohibited
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