Table of Contents
6
BUFFER MEMORY
6.23
CH1 Input Signal Error Detection Flag (Un\G114)
An input signal status can be checked.
For information on the buffer memory for CH2 or later, refer to Section 6.1 (1).
(1) Stored data
(2) How to clear storage data
6
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6.23 CH1 Input Signal Error Detection Flag (Un\G114)
POINT
When reading the digital output values, use A/D conversion completed flag (XE)
or CH1 A/D conversion completed flag (Un\G113) as an interlock.
Table 6.20 Storage data of CH1 Input signal error detection flag (Un\G114)
Setting
value
0
1
(a) An input signal error (1) will occur for CH1 Input signal error detection flag
(Un\G114) in the following case.
• The Q64AD2DA detects an analog input value being out of the range set with
CH1 Input signal error detection setting value (Un\G21).
(b) If an error is detected in any channel having setting conditions of both 1) and 2)
below, Input signal error detection signal (X7) will be set to on.
1) CH1 Input signal error detection setting (Un\G20) is set to 1 to 4 (the setting is
enabled).
2) CH1 A/D conversion enable/disable setting (Un\G0) is set to A/D conversion
enabled (0).
To clear the storage data of all the channels (CH1 to CH4), perform the following
settings.
1) Set the analog input value within the setting range.
2) Set Error clear request (YF) or Operating condition setting request (Y9) to on.
Input signal status
Normal
Input signal error
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