Mitsubishi Electric Q66DA-G, User Manual

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- 9 3.2 Function List
3.2.1 Analog output HOLD/CLEAR function
3
SPECIFICATIONS
3.2.1 Analog output HOLD/CLEAR function
(1) For the case where the programmable controller CPU is placed in STOP or in a stop
error status, whether to hold (HOLD) or clear (CLEAR) the analog output value can be
set.
(2) Set HOLD or CLEAR in "Switch 3" (HOLD/CLEAR function setting) of Switch setting
for I/O and intelligent function module dialog box. (Refer to Section4.5 (1).)
(3) Depending on combinations of the HOLD/CLEAR setting, D/A conversion enable/dis-
able setting (Un\G0), and CH Output enable/disable flag (Y1 to Y6), the analog out-
put status varies as shown in Table3.3.
*1 This occurs when program operations are not completed within the scheduled time due to a hard-
ware problem of the Q66DA-G. When a watchdog timer error occurs, Module READY (X0) turns off
and the Q66DA-G RUN LED turns off.
*2 The rate control function and the scaling function are operable.
Table3.3 Analog output status combination list
Setting
combination
Execution
status
D/A conversion enable/dis-
able setting (Un\G0)
Enable Disable
CH Output enable/disable
flag (Y1 to Y6)
Enable Disable Enable or disable
HOLD/CLEAR setting HOLD CLEAR HOLD or CLEAR HOLD or CLEAR
Analog output status when programmable controller
CPU is RUN
Outputs analog values converted
from digital values.*2
Offset 0 V/0 mA
Analog output status when programmable controller
CPU is STOP
Hold Offset Offset 0 V/0 mA
Analog output status when a programmable controller
CPU stop error occurs
Hold Offset Offset 0 V/0 mA
Analog output status when a watchdog timer error*1
occurs in Q66DA-G
0 V/0 mA 0 V/0 mA 0 V/0 mA 0 V/0 mA