Setting up serial port from ladder

[MarkTTU]

I know there's a SETUPSER instruction and it works great, but I'm trying to provide a way for customers to select their comms parameters from the touch screen (c-more) and then implement that in ladder. I know there's not that many combinations (8 baud rates, 2 options each for data bits, stop bits, and parity), but I'm wondering if there's a way to programmatically tell the SETUPSER instruction to use 9600/8/N/1 or 2400/7/E/2 without having to just have 64 separate rungs controlled by a host of input logic.

[BobO]

I know there's a SETUPSER instruction and it works great, but I'm trying to provide a way for customers to select their comms parameters from the touch screen (c-more) and then implement that in ladder. I know there's not that many combinations (8 baud rates, 2 options each for data bits, stop bits, and parity), but I'm wondering if there's a way to programmatically tell the SETUPSER instruction to use 9600/8/N/1 or 2400/7/E/2 without having to just have 64 separate rungs controlled by a host of input logic.

There isn't, sorry.

[Mike Nash]

DEVWRITE Can write the various settings and you can change each parameter using valid values. See help on the instruction.

I've used it to auto detect the settings for a device I knew what a valid response looked like. Then I used stages to step through various combos that would be valid for the device I was using.

It would be simpler to just put in what a user wanted using six DEVWRITE instructions.

[MarkTTU]

Thanks Mike! DEVWRITE looks like it should do the trick. Just have to make sure it re-runs at every power up, but that's not an issue.

[BobO]

I had honestly forgotten that we added DEVWRITE access to the port settings. I would have guessed it was DEVREAD only.