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8 Analog I/O Slave Unit
8 - 10 GX-series EtherCAT Slave Unit User’s Manual
 Purpose
The function detects a disconnection of analog input signal line.
Note that this function is valid only when the input range is "1 to 5 V" or "4 to 20 mA."
 Details of functions
If any analog input signal line (voltage/current inputs) of the points that are enabled by the "AD
Conversion Available Point Setting" is disconnected, the disconnected line detection flag of that
point (target index: 3136 hex) is turned ON.
If the moving average is enabled, the function works to detect a disconnected line in moving
average processing results.
The AD converted data at disconnected line detection is 7FFF hex.
If the input returns to the convertible range again, this function is automatically cancelled and normal
conversion data is input.
The table below shows details of the disconnected line detection flag.
 Purpose
If final input voltage and current deviates due to characteristics of input devices and methods of
connection, correct the "deviation" and adjust inputs.
 Details of functions
This function corrects conversion values of input voltages and currents at 2 points, 0% and 100%,
as shown in the figure below.
8-3-3 Disconnected Line Detection
Overview of functions
Bits State
0 1: CH1 disconnected / 0: CH1 normal
1 1: CH2 disconnected / 0: CH2 normal
2 1: CH3 disconnected / 0: CH3 normal
3 1: CH4 disconnected / 0: CH4 normal
4 to 15 Reserved
8-3-4 User adjustment
Overview of functions