Host Engineering Forum

General Category => Do-more CPUs and Do-more Designer Software => Topic started by: Henryp on November 12, 2013, 01:35:40 PM

Title: Modbus Function Code 22
Post by: Henryp on November 12, 2013, 01:35:40 PM

The Modicon M340 PLC supports a Modbus Function Code FC22 (0x16) Mask Write Register. This allows the ability to set a bit of a word.  Does the Do-more PLC support Function Code 22?

Thanks

Title: Re: Modbus Function Code 22
Post by: BobO on November 12, 2013, 02:15:30 PM

Currently? No.

The spec is simple, so I just added it to the server (slave) side, and it will be in the upcoming maintenance release.

The client (master) side is more problematic, since it requires extending the MWX instruction. We can probably add it in the future, but it will not be in the maintenance release.