I have a small iTrain test bench layout controlled by a YD7001. To control my Blocks I have been using either a DR4088CS or YD6016ES connected directly to the EXTN88 IN port of the YD7001. Whilst this is working OK. I note that each time I power up all the blocks show up as being occupied. I found that by unplugging the RJ45 cable in and out clears the occupation. Can this be avoided or can I presume this is not the correct solution!.