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SPECIFICATIONS
3.3 I/O Signals Transferred to/from Programmable Controller CPU
3.3.2 I/O signal details
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OVERVIEW
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SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
SETUP AND
PROCEDURES BEFORE
OPERATION
5
UTILITY PACKAGE (GX
CONFIGURATOR-TI)
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PROGRAMMING
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ONLINE MODULE
CHANGE
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TROUBLESHOOTING
3.3.2 I/O signal details
The following are details of the Q68TD-G-H02 (H01) I/O signals.
(1) Module ready (X0)
(a) If the module is in the normal mode at power-on or resetting of the programmable
controller CPU, this signal turns on to start conversion processing as soon as it
gets ready for conversion.
(b) When this signal (X0) is off in the normal mode, conversion processing is not
performed. In the offset/gain setting mode, conversion processing is performed if
this signal (X0) is off.
(c) This signal (X0) turns off when:
• The module is in the offset/gain setting mode
• The Q68TD-G-H02 (H01) is in a watchdog timer error *1
* 1 Occurs if program operation is not completed within the intended time due to errors such as a
hardware fault of the Q68TD-G-H02 (H01). The RUN LED of the Q68TD-G-H02 (H01) goes 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 the 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 value (Un\G62 to Un\G77)
• CH Scaling width upper/lower limit value (Un\G78 to Un\G93)
• CH Process alarm upper/lower limit value (Un\G94 to Un\G125)
• CH Rate alarm warning detection period (Un\126 to Un\G133)
• CH Rate alarm upper/lower limit value (Un\G134 to Un\G149)
• Conversion setting for disconnection detection (Un\G164,Un\G165) (Q68TD-
G-H02 only)
• Disconnection state conversion setting (Un\G164,Un\G165) (Q68TD-G-H01
only)
• CH Conversion setting value for disconnection detection (Un\G166 to
Un\G173) (Q68TD-G-H02 only)
• CH Conversion setting value for disconnection state (Un\G166 to Un\G173)
(Q68TD-G-H01 only)
When Operation condition setting completion flag (X9) is OFF, conversion processing
is not carried out.