Yaskawa 120 Series I/O Modules - Manual (Page 184)

4.3 I/O Allocation
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(3) Service Scan: Normal/High-speed
Two types of service scans are available: normal and high-speed. A service scan
is recommended when using the high-speed segment function. The I/O module is
activated before the ladder decoding of the high-speed segments. The I/Os that are
processed in synchronization with the high-speed scan are called High-speed Seg-
ment I/Os. The MEMOSOFT is set by default to “NORMAL.”
d) Input Signal Status
Error signals are generated by the Analog Input Module when an input signal
exceeds the input signal range.
(1) Analog Input Module ( ±10 V, 4 channels)
Input Register Application
300005 + n Analog input signal status for channels 1 to 4
Bit 15 1 when +10.24 V < channel 4 input signal
Bit 14 1 when +10.24 V < channel 3 input signal
Bit 13 1 when +10.24 V < channel 2 input signal
Bit 12 1 when +10.24 V < channel 1 input signal
Bit 11 1 when +10.0 V < channel 4 input signal < +10.24 V
Bit 10 1 when +10.0 V < channel 3 input signal < +10.24 V
Bit 9 1 when +10.0 V < channel 2 input signal < +10.24 V
Bit 8 1 when +10.0 V < channel 1 input signal < +10.24 V
Bit 7 1 when -10.24 V < channel 4 input signal < -10.0 V
Bit 6 1 when -10.24 V < channel 3 input signal < -10.0 V
Bit 5 1 when -10.24 V < channel 2 input signal < -10.0 V
Bit 4 1 when -10.24 V < channel 1 input signal < -10.0 V
Bit 3 1 when channel 4 input signal < -10.24 V
Bit 2 1 when channel 3 input signal < -10.24 V
Bit 1 1 when channel 2 input signal < -10.24 V
Bit 0 1 when channel 1 input signal < -10.24 V