Delta AH500 - 8.1 Introduction

AH500 Module Manual
8-2
8.1 Introduction
Thanks for using AH10/15SCM-5A, a serial communication module. To ensure that
AH10/15SCM-5A is installed and operated correctly, please read this manual carefully before using
the module.
AH10/15SCM-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 AH10/15SCM-5A, and can write an analog value/binary value into
AH10/15SCM-5A. Besides, it can be used as a RS-485/RS-422/RS-232 communication port
through which a program is downloaded to or uploaded from a CPU module. AH10/15SCM-5A is set
by means of SCMSoft in DCISoft. Please use DCISoft version 1.18 or above.
Functions:
 It is equipped with two RS-485/RS-422 ports (COM1 & COM2) (application for AH10SCM-5A).
 It is equipped with two RS-232 ports (COM1 & COM2) (applicable for AH15SCM-5A).
 There is isolation between two parts of RS-485/RS-422 communication, and there is isolation
between two parts of power (application for AH10SCM-5A).
 There are two built-in switches of 120 Ω terminal resistors (application for AH10SCM-5A).
 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 (application for AH10SCM-5A)
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
 RS-232 communication interface (application for AH15SCM-5A)
Item
Specifications
Connector type
DB9
Transmission
speed
1200, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200 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