WEG PLC300 User Manual - page 10

Introduction to PLC300

2-2 | PLC300

If during the update/saving of the firmware, the process is interrupted for some reason, 

the message “Bootloader V6.xy” will be displayed on the screen and the red LEDs of the 

Status, CAN and Serial will keep flashing. If that happens, just download the updated 

firmware via WPS.

SD memory card (Secure Digital):

The PLC300 allows saving data and program, logging events, recipes in a SD memory card.

The memory card must be SD type with FAT32 formatting with capacity up to 32G. The 

faster the card (class of the card), the shorter the recording time. This is important in case 

of regular variable log recordings, for instance. It is recommended the use of class 10 cards.

Automatic Software Recovery - ASR: 

It automatically recovers the PLC300 software, including configurations and retentive 

markers.

See 

Section 9.2 AUTOMATIC SOFTWARE RECOVERY - ASR on page 9-7

 of this manual.

RTC – Real Time Clock:

Real time clock that allows recording events such as alarms and logs, besides specific 

blocks such as alarms or interruptions.

Digital, PWM and analog outputs:

8 digital, galvanically insulated, protected, 500 mA (each), 24 Vdc, PNP outputs.

The 10 bit analog output has independent terminals for current or voltage.

Fast output up to 300 kHz with capacity of 100 mA in 24 Vdc can be programmed in PWM. 

It can be used as standard digital output.

Digital and analog inputs:

Ten isolated, digital inputs are available, at 24-Vdc level, able to produce interruption.

Two of them are fast and can be used to count pulses of up to 100 kHz, or as encoder 

input in quadrature.

A 12-bit, differential, analog input is also available.

Encoder input:

Quadrature encoder input, with additional signals and detection of split cable with optional 

alarm.

Maximum frequency: 100 kHz.