FX3U series PLC has keyword protection function, must open the ladder diagram to read and write. Please check two things:
First, whether the ladder diagram project is opened or a new project is built.
Second, the COM port is set correctly, whether the baud rate is 38.4K.
High speed FX3U PLC Description: 3000 only 1ms implementation procedures, 3 AB input, 6 analog input 2 analog output, 1N, 2N, 3U support command, 8000 step program, download speed 38400, support input interrupt, touch screen text screen etc.. Dual communication port (232+485) 485 support for the 4 communication protocols, special encryption, power down can be maintained
Input Power |
DC24 |
Number of steps |
8000 steps; 2 communication ports: 1 RS232 (DB9 serial port iscommunication port for the FX3u protocol 38400,7,E,1; 1 RS485 (485 selection) communication protocol can be set D8120). |
X input element |
DC24, X0-X27 input,Low level X0-5 is a high-speed count input port (Default is 12K, 100KHZ optional) |
Y output element |
Y0-Y3 transistor output,transistor output Current 500mA, plus the diode can achieve 4A. 100K 4 Channel Pulse output Y4-Y11 Transistor common output, can be directly driven 3A 24V load |
Analog input |
6 analog input, 12 bit precision, A0-AD2: 0-10V, A3-AD5 :0-20MA; read analog RD3A instruction。 |
Analog output |
2 analog output, 12 bit precision, output voltage: 0-10V. output analog voltage with WR3A instruction |
Intermediate relay M |
M0-M3071, the scope of power loss saving can be set up.Rang M0-M1023 |
Stepper Point S |
S0-1023, power down save range can be set up S0-S1023,Default is S500-S999 |
100Ms Timer |
T0-T199, cumulative power down save T184-T199 |
10Ms Timer |
T200-T249, cumulative power down save T246-T249 |
1Ms Timer |
T250-T383,T250-255 is the cumulative type |
16-bit counter |
C0-C199, power down save C100-199 |
32-bit counter |
C200-C219, power down save C220-C234 |
32-bit high-speed counter |
C235-255;C235-240 for the single-phase counter, Non harmonic; |
Register D |
D0-D7999, power-down save range can be set D0-7999 |
Indirect addressing pointer V, Z |
V0-7,Z0-7 |
P subroutine jump number |
P0-63 |
I interrupt |
X0-5 external interrupt. Timer interrupt (1MS units). Timer interrupt. |
Special element M |
M8000 running normally closed,M8002 power pulse,M8011 is 10Ms pulse,M8012 is 100Ms pulse,M8013 is 1s pulse,M8014 minutes pulse. |