receive.lua

mon = peripheral.wrap("left")
rednet.open("right")

while true do
  local sid, msg, dis = rednet.receive()

  time = os.time()
  time = textutils.formatTime(time)

  mon.clear()
  mon.setCursorPos(1, 1)
  mon.write(time)
  mon.setCursorPos(1, 2)
  mon.write(sid..":"..msg)
end