Page 1-6 NDA-24233 Issue 2
Chapter 1 VisuaLink 128/384 Engineering Guide
(1) Command 1 is issued using the external control port rather than a personal computer.
(2) If a report is received from the remote unit before a transmission of Command 1, it transmits a report to
a PC and then transmits Command 1 to th e remote unit. It transmits Response 1 to the PC after the
transmission. However, in parameter error and etc., it immediately transmits an error r esponse. When an
error response is received, it analyzes the error contents and suspends the command issuance or reissues
a command.