FYI, if the communication between the GS-EDRV100 and the drive is bad (over the serial connection), then the GS-EDRV100 structure member bit called .IntCommFault will come ON. Currently the Help Topic in Do-more Designer says this bit indicates a bad Ethernet connection, but this is incorrect (and will be corrected in the next release of Do-more Designer); instead, it actually indicates the health of the serial connection between the GS-EDRV100 and the drive itself.