Bit assignment of CC-Link

The slave stations cannot be assigned to X/Y numbers. Use the auxiliary relay M. More Details >>

Number of FX3U-1PG pulse output blocks that can be connected to the FX3U/FX3UC main unit

For the FX3U series, up to eight FX3U-1PGs can be connected. For the FX3UC series, up to six FX3U-1PGs can be connected. 　　 * To connect the FX3U-1PG to the... More Details >>

Switching network between 10BASE-T and 100BASE-TX of the FX3U-ENET-L

It cannot be freely switched. It is automatically switched according to the auto detection function. More Details >>

Memory cassettes that can be used in the FX3G series

The FX3G-EEPROM-32L can be used. More Details >>

Extending the extension cable

It is not possible to extend the length of the extension cable to over 65cm. Place the main unit separately by using the parallel link or N:N Network functio... More Details >>

MELSEC-F series high-speed counter blocks that can import differential pulses

The FX2N-1HC, FX2NC-1HC, FX3U-4HSX-ADP, and FX3U-2HC can import differential pulses. More Details >>

Distinguishing the usage of standard counters and high-speed counters

Standard counters offer counting up to 10Hz. For high-speed input signals which exceed 10Hz, use high-speed counters,interruption function, or another proce... More Details >>

Data backup failure

If the OUT instruction using the device number of the latch target device exists in a sequence program, the latched data may be overwritten by execution of t... More Details >>

Cause to turn on the ERR LED of a CC-Link master module

All stations communication error of a slave station.When POWER of the slave station is off, check if 24 V DC has been supplied.When POWER is on, check the st... More Details >>

Link register assignments in MELSECNET/10 networks

For any type of MELSECNET network (II, /10, and H), B and W devices with the same number cannot be used for multiple stations as write areas. Following th... More Details >>