Process image

In the process image the EtherCAT P ports are designated "Channel 1" to "Channel 4". The following table shows the correlation between the designations in the process image and the designations of the EtherCAT P ports:

Designation in the process image	EtherCAT P port
„Channel 1“	X52
„Channel 2“	X53
„Channel 3“	X54
„Channel 4“	X55

Process image 1:

The EP9224-0037 has four output channels, DPO Inputs Channel n.

Subsequently, a status channel follows for the complete device DPO Inputs Device.

In the output section there are four output channels, DPO Outputs Channel n.

An output word follows for the complete device DPO Outputs Device.

WcState and InfoData are standard EtherCAT system variables.

Since EtherCAT is distributed in addition to power, an EP9224-1037 device is included.

DPO Inputs Channel 1 to 4

Process image 2:

The four channels each have status bits and status LEDs for displaying the current channel state:
Error U_S: U_S was switched off due to overcurrent

Error U_P: U_P was switched off due to overcurrent

Warning U_S: If the current value set in CoE object 80n0:12 persists, the channel will be switched off

Warning U_P: If the current value set in CoE object 80n0:13 persists, the channel will be switched off

Status U_S: Channel switched on or off

Status U_P: Channel switched on or off

Channel Error: Error U_S or Error U_P is TRUE

Error Sum Current: The sum value for Is and Ip of the channel set in CoE object 8000:14 has been exceeded for too long.

Warning Sum Current: If the sum current for I_S + I_P of the channel persists, the channel will be switched off.

Current U_S, Current U_p: Two 16-bit process words each represent the present output current value of U_S or U_P respectively.

DPO Inputs Device

Process image 3:

Subsequently, a status word follows for the complete device DPO Inputs Device.

Temperature Warning: The internal temperature of the EP9224 will soon reach the shut-off point.

Temperature Error: The internal temperature was too high. The output channels were switched off.

U_S/U_P Warning: The value of the input voltage U_S/U_P is less than the upper threshold value U_warn.

U_S/U_P Error: The value of the input voltage U_S/U_Phas fallen below the lower threshold value U_err. The output voltages have been switched off.

Global Error Bit: There is at least one error message pending.

Sum Current Warning: The sum value for I_S and I_P of the box set in CoE object F80E:12 has been exceeded for too long.

Error Sum Current: If the sum value for I_S and I_P of the channel set in CoE object 8000:14 persists, the channel will be switched off.

Current U_S: Present sum current of the supply input socket Us

Current U_P: Present sum current of the supply input socket Up

Voltage U_S: Present input voltage of the supply input socket U_S in 1/10V

Voltage U_P: Present input voltage of the supply input socket U_P in 1/10V

Temperature: Current internal temperature of the box

DPO Outputs Channel 1 to 4

Process image 4:

The EP9224 has 4 x 16-bit output data of the four output channels DPO Outputs Channel n.

Output U_S/U_P:
TRUE - switches on the output,
FALSE - switches off the output

Reset U_S/U_P: TRUE - reset in case of an error.

DPO Outputs Device

Process image 5:

Subsequently, a status word follows for the complete device DPO outputs Device.

Enable Control Via Fieldbus:
TRUE - control of all outputs via output variables,
FALSE - automatic switch-on depending on the CoE entries

Global Reset: Resets all errors in the box