# 2019-06-14 22:50:36.107575
+help

# 2019-06-14 22:50:54.780566
+q

# 2019-06-14 22:52:53.061353
+help

# 2019-06-14 22:53:29.359029
+client.read_ho

# 2019-06-14 22:53:48.878000
+client.read_holding_registers unit=3 address=0 count=3