Jack1995

TXD data Received by PC show empty/FF FE

6 posts in this topic

Hi guys, This is my 1st time using TXD function to send a letter 'P' to PC by RS232, I have my pC can detect that a data being sent but it seems like didn't received the content, from the software i use to communicate with serial port, it just showing empty/FF FE(Hex) with whatever data i tried to send, I have tried changing the data type but it's still the same, pls help, Thanks.

Setting.PNG

TXD.PNG

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Your TXD instruction is set to transmit 256 bytes of data.

Can you receive information?

Wondering if your cable is correct.  Omron 9 pin port is NOT standard wiring.

gtsuport

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6 hours ago, gtsuport said:

Your TXD instruction is set to transmit 256 bytes of data.

Can you receive information?

Wondering if your cable is correct.  Omron 9 pin port is NOT standard wiring.

gtsuport

I can get signal that plc sending data to pc but I can't receive any information, my db9 is connected follow Omron manual. May I know how to change the transmit bytes from 256 bytes to lower bytes? Cause I m actually need it to constantly send 'P' every second only no other data

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What is the model number of the plc?

What port are you using for the communications?  Is it a built in port?

gtsuport

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On 2/14/2020 at 8:12 PM, gtsuport said:

What is the model number of the plc?

What port are you using for the communications?  Is it a built in port?

gtsuport

sorry for late reply, I m using Omron CP2E, using rs232 serial port, from the latest info i get, is it posible if i use lan for data communication instead of rs232?

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We do not have the CP2E in the US.

From the manual, it looks like you could use socket services for the communications.

See the W614 manual for more information.

Just FYI, I think serial will be easier.

gtsuport

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