AC500 High Speed Digital Output with a High Number (except onboard cpu and on cd522)
Hi
I want to send 10 bit gray code with 10 digital outputs (with AC500 -eCo CPU, Automation builder) .In fact i have produced 10 bit gray code and want to send them by 10 high speed digital outputs.
I need minimum 600Hz , maximum 1000Hz for DO but common DOs for AC500 are 11Hz and high speed digital outputs ( O2,O3 onboard cpu pm554) aren't enough for me. I need 10 qty.
Please introduce me digital output module for this application.
Thank you.
Elham Banavi
I want to send 10 bit gray code with 10 digital outputs (with AC500 -eCo CPU, Automation builder) .In fact i have produced 10 bit gray code and want to send them by 10 high speed digital outputs.
I need minimum 600Hz , maximum 1000Hz for DO but common DOs for AC500 are 11Hz and high speed digital outputs ( O2,O3 onboard cpu pm554) aren't enough for me. I need 10 qty.
Please introduce me digital output module for this application.
Thank you.
Elham Banavi
Asked 7 months ago
Voted best answer
1
Hi,
AFAIK, the simple answer is: you can't. The purpose of the fast outputs, that you mentioned, is PWM or fast train function.
As per technical specification, for some transistor outputs (eg. DC562) at resistive load, the switching frequency is limited to the CPU cycle time.
So if you have a task cycle 1 ms, that means 1000 Hz.
Still I don't believe you can realize what you want in practice.
AFAIK, the simple answer is: you can't. The purpose of the fast outputs, that you mentioned, is PWM or fast train function.
As per technical specification, for some transistor outputs (eg. DC562) at resistive load, the switching frequency is limited to the CPU cycle time.
So if you have a task cycle 1 ms, that means 1000 Hz.
Still I don't believe you can realize what you want in practice.
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