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3.3 I/O Signals for Communicating with Programmable Controller CPU
3.3.2 I/O signal details
3
SPECIFICATIONS
3.3.2 I/O signal details
This section describes details of the Q68RD3-G I/O signals.
(1) Module ready (X0)
(a) If the module is in the normal mode when the programmable controller is powered
ON or the reset operation of the CPU module is performed, this signal turns ON to
start conversion processing as soon as the module is ready.
(b) When this signal is OFF in the normal mode, conversion processing is not
performed. If the module is in the offset/gain setting mode, conversion processing
is performed even if this signal is OFF.
(c) In any of the following cases, this signal turns OFF.
• The module is in the offset/gain setting mode.
• A watchdog timer error occurs in the Q68RD3-G.
*1
* 1 A watchdog timer error occurs when program operation does not complete within the intended time
due to errors such as a hardware failure of the Q68RD3-G. The "RUN" LED of the Q68RD3-G turns
off when a watchdog timer error occurs.
(2) Operation condition setting completion flag (X9)
(a) When the following settings are changed, this signal is used as an interlock
condition to turn ON/OFF Operation condition setting request (Y9).
• Conversion enable/disable setting (Un\G0)
• CH Time/Count/Moving average/Time constant setting (Un\G1 to Un\G8)
• Averaging processing selection (Un\G24, Un\G25)
• Warning output enable/disable setting (Un\G46)
• Scaling valid/invalid setting (Un\G58)
• CH Scaling range upper/lower limit values (Un\G62 to Un\G77)
• CH Scaling width upper/lower limit values (Un\G78 to Un\G93)
• CH Process alarm upper/lower limit values (Un\G94 to Un\G125)
• CH Rate alarm warning detection period (Un\126 to Un\G133)
• CH Rate alarm upper/lower limit values (Un\G134 to Un\G149)
• Conversion setting for disconnection detection (Un\G164, Un\G165)
• CH Conversion setting value for disconnection detection (Un\G166 to
Un\G173)
(b) When this signal is OFF, conversion processing is not performed.