Support for multiple slaves on bus

[mesink]

ModbusMaster version: v2.0.1

Just wondering if there is any work in progress or plans to support multiple devices on the bus. I'll be looking to add this functionality and wanted to leverage any existing code.

[JoeEarlam]

This works in 2.0.1 using the setSlaveID() function:

void testRead(uint8_t addr) { node.setSlaveID(addr); if (node.readHoldingRegisters(17, 35) == node.ku8MBSuccess) { for (uint8_t j = 0; j < 35; j++) { data[j] = node.getResponseBuffer(j); Serial.print(j); Serial.print(": "); Serial.println(data[j]); } } }