ADAM-2000 Series User Manual 56
B.1 Introduction
ADAM-2000 series supports Modbus RTU protocol and serves as Modbus slave
devices that takes commands from a Modbus master. Each module has its own
unique Modbus ID such that master can address each individual slave. The ADAM-
2000 series are the Modbus RTU ready communication solution for Wireless Sensor
Network data acquisition applications.
B.2 ADAM-2000 I/O Modbus Mapping Table
To use the Modbus devices properly, the Modbus ID, Function code, Register
Address and Value must be properly configured. In the session, you can find the
detail Modbus information of the ADAM-2000 series.
B.2.1 ADAM-2520Z
Wireless Sensor Network Modbus RTU Gateway
03 Read Holding Register
Table B.1: Modbus ID Table of ADAM-2000 series
Function Modbus ID Range
Coordinator 241 ~ 244 (Initial Mode), 245 ~ 248(Normal Mode)
Router 1~240
End Device 1~240
Table B.2: ADAM-2520Z Function Table
Address 4x Description Attribute Value
20001 Module Status Read Bit0: 0; Initial Mode
Bit0: 1; Normal Mode
Bit1: 0; No External Power Input
Bit1: 1; External Power Input
20003 Battery Level Read 0x0000; Low
0x4000; Poor
0x8000; Normal
0xC000; Good
0xFFFF; Excellent
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