Example of Cancel Datagram ................................................................................6-108 Explanation of Cancel Datagram ...........................................................................6-109 Update Real-Time Datagram ........................................................................................6-110 Example of Update Real-Time Datagram for Series 90-30 PLCs: One Point Format....................................................................................................................6-112 Explanation of Update Real-Time Datagram for Series 90-30 PLCs: One Point Format....................................................................................................................6-113 Loading and Storing User Programs to Series 90-30 PLCs ..........................................6-114 Program Load: Series 90-30 PLCs .........................................................................6-114 Example of Program Load for Series 90-30 PLCs.................................................6-115 Explanation of Program Load for Series 90-30 PLCs............................................6-117 Program Store: Series 90-30 PLCs ........................................................................6-119 Example of Program Store for Series 90-30 PLCs.................................................6-120 Explanation of Program Store for Series 90-30 PLCs............................................6-122 Contents GFK-0529C Contents ix Appendix A Serial Port and Cables ....................................................................................... A-1 What this Appendix Contains ..........................................................................................A-1 The RS-485 Interface.........................................................................................A-2 Constructing RS-422/RS-485 Cables....................