User`s manual

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FX series CPU

POWER

RUN

BATT.V

MELSEC FX2-24MT TRANSISTOR UNIT

Connect to a CPU port.

To secure the noise

filter, attach the cord

band close to its bottom.

Attach this noise filter

as close to the connector

as possible.

OD 20mm

ID 8mm

Notes on the direct connection with the CPU port of FX series CPU

Take appropriate measures to eliminate any noise from entering the communication cable between

the ZM-

and MITSUBISHI FX series CPU.

Noise should be considered when wiring in an electric box or in a machine. Be sure to keep the ZM-

wiring sufficiently away from power cables.

The longer the communication cable is, the more likely noise is to be an influence; therefore, the

cable length should be minimized as much as possible.

A noise filter(ferrite core) is sold as an optional accessory.

According to our noise tests, the attachment of a ferrite core improves

noise voltage by 650 to 900V and aids in preventing communication errors. For safer

operation, be sure to attach the ferrite core to the cable.

Note

Ferrite core

2 MITSUBISHI PC • 4

Notes on using ZM-1MD2 (Dual Port Interface)

As the ZM-1MD2 is powered by a CPU, check that the electric capacity of the CPU is at 5V (power

consumption: max. 350mA).

The distance between the CPU and the ZM-1MD2 should be as short as possible (max. 1 to 1.5m).

For wiring, take appropriate measures to eliminate noise.

Specify the value more than 150 (=1.5 sec) in [Time-out Time] of [Comm. Parameter] in case of

connecting ZM-** to a ZM-1MD2.