Figure 3.9 PLC Board

3.3.1 Basic Specifications

Table 3.8 Basic parameters of PLC Board

Storage and transportation conditions
Temperature	-40~70℃
Relative Humidity	<=95%, No condensation
Atmospheric pressure	70~106kpa
Sinusoidal Vibration	<=10 m/s², Three-axis direction Acceleration
Random Vibration	<=1 M²/s³，Acceleration spectral density
Allowed drop height	<=1 M
Others	No corrosive gases, No dust
Working conditions
Temperature	5~45℃
Relative humidity	10%~95%，No condensation
Atmospheric pressure	80~106kpa
Sinusoidal vibration	<=10 m/s²，Three-axis direction Acceleration
Vibration frequency	<=900Hz
Random Vibration	<=1 M²/s³，Acceleration spectral density
Others	No corrosive gases, No dust

3.3.2 Interface definitions

Figure 3.9 Interface definitions of PLC Board

Number	Name	Technical description
1	Power-supply interface	DC 24V(It is better by using two + terminals power-supply when the output load is large)
2	ECAT Bus input interface	Recommend: port IN access output port of the front ECAT controller, port OUT access input port of the rear ECAT controller.
3	ECAT Bus output interface
4	Bus state indicators	See the following table about Bus state indicators definition
5	Board state indicators	See the following table about Board state indicators definition
6	Digital output interface	PLC32：with 32 input ports and 32 output ports PLC48：with 48 input ports and 48 input ports
8	Digital output interface
7	Digital output state indicator	When interface is in state of logic level '1', the corresponding LED is ON. Otherwise the corresponding LED is OFF.
9	Digital input state indicator

3.3.3 Bus State indicators

Figure 3.10 Bus State indicators

LED Name	Function	State	Meaning
ACT1	Connection state of OUT port	OFF	OUT port is NOT effectively connected with other devices
		Constantly ON	OUT port is effectively connecting with other devices
		Blinking	OUT port is communicating with other devices
ACT0	Connection state of IN port	The same as ACT1	The same as ACT1
RUN	Bus State indicators	OFF	Board is not established connection with Bus, or it is in the INIT state.
		Blinking	Board-Bus is in the PRE-OP state, it is an intermediate state when the power is on.
		Constantly ON	Board-Bus is in the OP state, which is the state of normal operation

3.3.4 State indicators of PLC Board

Table 3.11 State indicators of PLC Board

LED Name	Function	State	Meaning
PWR	Power indicator	Constantly ON	Board power supply is in normal.
PLD RUN	Port IO working state	Blinking	Port IO Chip is working in normal.
CFG ERR	Bus configuration state	OFF	Bus control chip is configured in normal.
CFG ERR	Bus configuration state	ON	Bus control chip is configured in ERROR
CUP RUN	Board CPU working state	Blinking	Board control chip is working in normal.
COMM	Communication state indicator	OFF	No process data is exchanging between the Board and the main station.
COMM	Communication state indicator	Constantly ON with low luminance	Process data is exchanging between the Board and the main station.
RES	Reserved

3.3.5 Wiring examples and Principles of Interface

Overview

Figure 3.10 Wiring of the PLC Board

Interface circuit

ESCPLC-ASIC-V1.3 has the input with 24V electrical level, and the input signal and the power supply of the entire Board interface are grounded together. Its basic parameters are as follows:

ESCPLC32-ASIC-V1.3	32 digits inputs, 32 digits outputs
ESCPLC48-ASIC-V1.3	32 digits inputs, 32 digits outputs

The input signal is a kind of level input, and the signal should be grounded together with the power signal of the Board interface. The typical input current is <2mA. It is suitable for driving small power relays and LED. See more in the following figure:

Electrical level or Voltage	State：
Vin>19V	Logic '1'
6V<Vin<19V	The same as former logic state
Vin<6V	Logic '0'

The output signal is driven by transistor, and its driving current is from the power supply of Board interface. The referential electrical level is from the negative pole of the power supply of the Board. The driving voltage is 24V, and maximum driving current is 200mA, so it can be used only to drive small power relays and signal lights. See more in the following figure: