Test, test, test

Datalog comms test for 8+ hours without problem. Showed no sign of memory increase in Private Bytes, or in # of Bytes in All Heaps, although the latter consistantly jumped by some 300k or so, but always dropped again, as well as the regular GC cycle. The 300k jumps (increase and decrease) coincided with a GC Gen 2 collection. Error on disconnect: "Failed to send command - Write pending". This was repeated a couple of times, but not consistantly. Possibly the PLC control loop thread is being allowed to exit before a command cycle has completed?