3 SPECIFICATIONS
Device | Signal description | Reference | |||
number | section | ||||
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X1A |
| CH1 Global signal | ON: Output instructed | Section 3.10, | |
X1B |
| CH2 Global signal | ON: Output instructed | Reference | |
X1C |
| System setting default completion | Section 8.4.11 | ||
| ON: Completed |
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X1D |
| (For system) | — | ||
X1E | 4 | Q series C24 ready | ON: Accessible | — | |
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| Watchdog timer error (WDT error) |
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X1F | 5 | ON : Module error occurred | — | ||
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| OFF: Module being normally operated |
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Device | Signal description | Reference | |
number | section | ||
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Y1A | Use prohibited | — | |
Y1B | |||
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Y1C | System setting default request | Section 8.4.11 | |
ON: Requesting | |||
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Y1D |
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Y1E |
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| Use prohibited | — | |
Y1F |
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1 The device does not turn on/off by execution of a dedicated instruction when a function that corresponds to the input signal is used.
2 The device does turn on/off by execution of a dedicated instruction when a function that corresponds to the input signal is used (from ON to OFF: Data read completed).
3 The mode switching signal (X6/XD) turns ON at mode switching, receive clear, user frame receive designation or transmission sequence initialization.
While the mode switching signal (X6/XD) is ON, do not issue a communication request to the target interface.
(The communication processing of the Q series C24 is stopped while the mode switching signal (X6/XD) is ON.)
4 The Q series C24 ready signal indicates whether or not it is possible to access the Q series C24 from the PLC CPU.
Use it as a interlock signal for a sequence program.
(It turns on about one second after turning the power ON and reset operation.)
5 Restart the PLC CPU when the watchdog timer error signal is turned on (reset the power and the CPU module).
6
•X10 to X16: For system
•Y10 to Y16: Use prohibited
IMPORTANT
(1)Of the input/output signals to the PLC CPU, the signals marked with "Use prohibited" must not be output (ON).
If any of the "Use prohibited" signals is output, the PLC system may malfunction.
(2)When the modem function is not used or the
POINT
(1)The input/output signals shown in this section are the signals used when a QnA series serial communication module program is utilized for the Q series C24 (see Section 2 in appendix).
In the QCPU, the on/off of input/output signals to intelligent function modules is executed with a dedicated instruction.
It is not necessary to turn the signals on/off by the sequence program, except for the input/output signals shown in the programming of each function reference page.
(2)When a program for a QnA series serial communication module is also utilized for the Q series C24, it is recommended to replace the instructions with the dedicated instructions shown on the corresponding function reference page of each manual for the Q series C24.
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