AH500 Module Manual 8.1 Introduction Thanks for using AH10SCM-5A, a serial communication module. To ensure that AH10SCM-5A is installed and operated correctly, please read this manual carefully before using the module. AHAH10SCM-5A is a serial communication module. It supports the Modbus UD Link (user-defined format). It can function as a BACnet MS/TP slave. A BACnet MS/TP master can read an analog value/binary value from AH10SCM-5A, and can write an analog value/binary value into AH10SCM-5A. Besides, it can be used as a RS-485/RS-422 communication port through which a program is downloaded to or uploaded from a CPU module. AH10SCM-5A is set by means of SCMSoft in DCISoft.
Please use DCISoft version 1.08 or above. Functions: It is equipped with two RS-485/RS-422 ports (COM1 & COM2). There is isolation between two parts of RS-485/RS-422 communication, and there is isolation between two parts of power. There are two built-in switches of 120 Ω terminal resistors. Every communication port can be connected to 32 devices at most. It can function as COM3 through which a program is downloaded or uploaded. Modbus Advance provides a means of exchanging data through Modbus. The UD Link provides a user-defined communication protocol, and a sequence-planning function. It can function as a BACnet MS/TP slave, and can be connected to a master.
The functional specifications RS-485/RS-422 communication interface Electrical specifications BACnet Protocol Implementation Statement Standard BACnet device 8-2 Item Specifications Connector type European-style terminal block Transmission speed 1,200, 2,400, 4,800, 9,600, 19,200, 38,400, 57,600, 76,800, 115,200, 230,400, and 460,800 bps Communication format Stop bit: 1 bit and 2 bits Parity bit: none, an odd parity bit, and an even parity bit Data bit:
7 bits and 8 bits Communication protocol Modbus ASCII/RTU UD Link BACnet MS/TP slave stations Item Specifications Supply voltage 5 V DC Electric energy consumption 1.5 W Insulation voltage 2,500 V DC Weight Approximately 131 g Model Device AH10SCM-5A BACnet Application Specific Controller (B-ASC)