Hi I am working on Secure 300 Premier Energy Meter, I am using RS232 to TTL Converter. I have the following questionaries below
As per this forum https://www.gurux.fi/node/21057
1. Do we need to short the 4,6 pins as well as the 7&8 pins in DB9 Connector.
2. If yes, these pins are not connected to RJ11 connector, what is the reason of shorting these pins?
3. In RS232 Trans receiver IC, Can I use T2out and R2in pins as CTS and RTS pins and can i pull up these pins with external resistor ?
Hi, At least TX, RX, and GND…
Hi,
At least TX, RX, and GND must be connected to make the connection work. If your meter is using flow control then the RTS and CTS must be connected also. The flow control is allowed all the time if RTS and CTS are connected to the VCC.
BR,
Mikko