# example configuration for RS485 bus, half-duplex, RTS control [VFS11] # serial connection TYPE=rtu # serial port DEVICE=/dev/ttyS0 # serial device detail if TYPE=rtu # 5 6 7 8 BITS= 8 # even odd none PARITY=even # 110, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 BAUD=19200 # 1 2 STOPBITS=1 #rs232 rs485 SERIAL_MODE=rs485 # RS485 direction control # none: assume RS485 is full-duplex # up: assert RTS before writing to modbus # down: deassert RTS before writing to modbus, active during read # see http://www.libmodbus.org/site_media/html/modbus_rtu_set_rts.html RTS_MODE=up # target modbus ID TARGET=1