8-1 
Chapter 8  Serial Communication Module 
AH10/15SCM 
 
Table of Contents
 
8.1  Introduction ................................................................................................8-2 
8.2  Dimensions and Profile ..............................................................................8-4 
8.2.1  Dimensions ........................................................................................8-4 
8.2.2  Profile .................................................................................................8-5 
8.2.3  Communication Port ...........................................................................8-7 
8.3  Installation and Wiring ...............................................................................8-8 
8.3.1  Installation ..........................................................................................8-8 
8.4  Control Registers .......................................................................................8-9 
8.4.1  Descriptions of the Control Registers ............................................... 8-12 
8.4.2  Introduction of the Related Instructions ............................................ 8-18 
8.5  Quick Start ............................................................................................... 8-22 
8.6  Software .................................................................................................. 8-29 
8.6.1  SCM Project ..................................................................................... 8-29 
8.6.2  COM Port Setting ............................................................................. 8-29 
8.6.3  UD Link (User-defined Communication) ........................................... 8-30 
8.6.3.1  TX Packets and RX Packets ..................................................... 8-31 
8.6.3.2  Command ................................................................................. 8-33 
8.6.3.3  Sequence .................................................................................. 8-34 
8.6.4  Modbus Advance.............................................................................. 8-34 
8.6.5  COM Port History ............................................................................. 8-34 
8.7  Application ............................................................................................... 8-35 
8.7.1  Modbus ............................................................................................ 8-35 
8.7.1.1  Modbus Slave─Connection with Delta Products ....................... 8-36 
8.7.1.2  Modbus Master─Connection with Delta Products ..................... 8-38 
8.7.2  Connecting to ISPSoft ...................................................................... 8-46 
8.7.3  RS-485/RS232 ................................................................................. 8-47 
8.7.3.1  Connecting to a Power Meter .................................................... 8-47 
8.8  Error Flags ............................................................................................... 8-65