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3 SPECIFICATIONS
3.4 I/O Signals Transferred to/from the PLC CPU
3.4.1 I/O signal list
Input signal (Signal direction: Q64TC
Device No.
Xn0
Module ready flag
Xn1
Setting/operation mode status
Xn2
Write error flag
Xn3
Hardware error flag
Xn4
CH1 auto tuning status
Xn5
CH2 auto tuning status
Xn6
CH3 auto tuning status
Xn7
CH4 auto tuning status
2
Xn8
E
PROM write completion flag
Xn9
Default value write completion flag
2
XnA
E
PROM write failure flag
XnB
Setting change completion flag
XnC
CH1 alert occurrence flag
XnD
CH2 alert occurrence flag
XnE
CH3 alert occurrence flag
XnF
CH4 alert occurrence flag
3 - 22
This section explains the allocation and applications of the Q64TC I/O signals.
(1) The Q64TC uses 16 input points and 16 output points to transfer signals to/from
the PLC CPU.
(2) Table 3.4 lists the I/O signals used by the Q64TC.
Inputs (X) mean the signals from the Q64TC to the PLC CPU and outputs (Y) the
signals from the PLC CPU to the Q64TC.
(3) The I/O signals (X, Y) indicated in this manual assume that the module is loaded
on the I/O slot 0 of the main base unit.
If the Q64TC is mounted on other than the I/O slot 0, change the I/O signals for
those of the slot where the module is mounted.
(4) When the Q64TCTTBW or Q64TCRTBW is used, the device numbers of the I/O
signals increase by 16 points depending on how many free points the left-hand
side slots have.
Hence, as I/O signals are given as indicated below in this manual, read them
according to the module used.
Example) When a signal is given as Yn1
When Q64TCTT or Q64TCRT is used: Y1
When Q64TCTTBW or Q64TCRTBW is used: Y11
Table 3.4 I/O signal list
PLC CPU)
Signal name
POINT
We cannot guarantee the functions of the Q64TC if any of the reserved areas is
turned on/off in a sequence program.
Output signal (Signal direction: Q64TC
Device No.
Yn0
Reserved
Yn1
Setting/operation mode command
Yn2
Error reset command
Yn3
Reserved
Yn4
CH1 auto tuning command
Yn5
CH2 auto tuning command
Yn6
CH3 auto tuning command
Yn7
CH4 auto tuning command
2
Yn8
E
PROM backup command
Yn9
Default setting registration command
YnA
Reserved
YnB
Setting change command
YnC
CH1 forced PID control stop command
YnD
CH2 forced PID control stop command
YnE
CH3 forced PID control stop command
YnF
CH4 forced PID control stop command
MELSEC-Q
PLC CPU)
Signal name
3 - 22
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