4.6 Wiring CPU Modules
When you use open collector NPN/PNP outputs to activate AS300 high speed inputs, you need to
have the pull up/pull down resistor connected to X point and S/S. Only use 3 W / 470 ohm or 2 W / 1
Kohm resistors.
When you use Push-Pull outputs to activate AS PLC CPU high speed inputs, you don’t need to use
any pull up/pull down resistor connected to X point and S/S.
While using ports Y as output ports, all the C0 points should be connected. Do NOT only use ONE C0
point.
Note:
In case open collector NPN/PNP outputs are used to activate AS300 high speed inputs, you need to
have the pull up/pull down resistor connected to X point and S/S.
In case Push-Pull outputs are used to activate AS300 high speed inputs, you don’t need to use any
pull up/pull down resistor connected to X point and S/S.
It is recommended to use the resistor of 3W/470ohm or 2W/1Kohm.
While using ports Y as output ports, all the C0 points should be connected. Do NOT only use ONE C0
point.
Through the following wiring you can increase the resistance of a resistor. See the illustration below for
reference.
NPN PNP
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