Specifications

5. Initial PLC Start-Up
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5-1
 Power Indication
1. The “ POWER ON” LED on the MPU and the Extension
Unit will be lit if the power is on. Or if the LED is not lit,
it is an indication that the PLC’ s 24VDC terminal is
overloaded, and it is thus necessary to remove the
wiring on terminals +24V and 24G, and to provide a
24VDC power supply for each terminal respectively.
Moreover, if the ERROR LED blinks continuously, it
suggests that the power supply of PLC (+24 V) is low.
2. The “ LOW V.” LED on the Extension Unit is an indication
that the power voltage is low and thus, all outputs of the
Extension Unit should be turned off.
 Preparation, Operation and Test
1. Prior to applying power, please verify the power lines
and input/output wiring is correct.
2. If the ERROR LED is not blinking after using the
peripheral equipments to write the program into the
MPU. It means that the program is legal and the PLC
will wait for a RUN command.
3. Enter the RUN command. The RUN LED will light up.
4. Use a HPP or PC to monitor the settings & the data sets
of the Timer, the Counter, and the Data Register, and
consequently, to perform the ON/OFF functions for the
output points. If the ERROR LED is lit (but not blinking),
it means that the program setting is over the preset
overtime limit, and with this occurrence, please double
check the program and perform the ON/OFF functions
again (at the time when PLC is returning to the STOP
mode).
 PLC Input/Output Reaction Time
The total reaction time from the input signal to the output
operation is calculated as follow:
Reaction Time = input delay time +
program scan time +
output delay time
Input delay time
10ms (factory default), 0~15ms
adjustable. Please refer to the
usage of special devices
D1020~1021.
Program scan time
Please refer to the usage of
special device D1010.
Output delay time
Relay module: 10ms
Transistor module: 20~30Ӵs
Please refer to following diagrams for more detail.