Function modbusWriteRegister

app/rcc/api/SerialStudio.js:185–188

(address, value)

// Protocol encoders (pure helpers, always available).
function modbusWriteRegister(address, value) {
  var a = address & 0xFFFF, v = Math.round(value) & 0xFFFF;
  return String.fromCharCode((a >> 8) & 0xFF, a & 0xFF, (v >> 8) & 0xFF, v & 0xFF);
}
function modbusWriteCoil(address, on) {
  return modbusWriteRegister(address, on ? 0xFF00 : 0x0000);
}