92
8.7
Analog Output HOLD/CLEAR Function
This function allows the selection of whether to hold or clear the analog value output when the CPU module is in the
following operating status: RUN, STOP, or a stop error.
(1) Combination of analog output status
The following table shows how the analog output status changes, depending on the combination of settings for
D/A conversion enable/disable setting (address: 0102H, 0202H) and CH
Output enable/disable flag (RY10 to
RY13, RY20 to RY23).
*1
Indicates the case that the operation of a program is not completed within the expected time in the CPU module due to a
hardware failure in the D/A converter module or other factors. In this case, Remote READY (RXB) turns off and the RUN
LED of the D/A converter module goes out.
*2
The analog output HOLD/CLEAR function may be executed even when the D LINK LED is on if the cyclic data update
watch time is set. For details, refer to the following:
Cyclic Data Update Watch Function (
*3
The error related to synchronous communication includes the following errors.
• RWw/RWr setting error (error code: 0E00H)
• Synchronous communication error 1 (error code: 0E10H)
• Synchronization cycle setting error (error code: 0E20H)
• Synchronous communication error 2 (error code: 0E30H)
Execution
status
D/A conversion enable/disable setting
(address: 0102H, 0202H)
Enable
Disable
CH
Output enable/disable flag
(RY10 to RY13, RY20 to RY23)
Enable
Disable
Enable or disable
Analog output HOLD/CLEAR setting
(address: 0104H, 0204H)
HOLD
CLEAR
HOLD or CLEAR
HOLD or CLEAR
Analog output status while the CPU module is in RUN
The analog value D/A-converted from the digital
value is output.
Offset value
0V/0mA
Analog output status while the CPU module is in STOP
Hold
Offset value
Offset value
0V/0mA
Analog output status while the CPU module is in stop error
Hold
Offset value
Offset value
0V/0mA
Analog output status while the D LINK LED is off
Hold
Offset value
Offset value
0V/0mA
Analog output status while the instruction of data link stop is
received from the master station
Hold
Offset value
Offset value
0V/0mA
Analog output status while reserved from the master station
Hold
Offset value
Offset value
0V/0mA
Analog output status of when the out-of-range digital value
error occurs
The upper limit value or lower limit value of
analog value is output.
Offset value
0V/0mA
Analog output status of when the out-of-range setting error
occurs
0V/0mA
0V/0mA
0V/0mA
0V/0mA
Analog output status of when a hardware failure
occurs
0V/0mA
0V/0mA
0V/0mA
0V/0mA
Analog output status of when an error related to synchronous
communication
has occurred
Hold
Offset value
Offset value
0V/0mA
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