AccuEnergy AcuDC 241 User Manual

www.accuenergy.com
V: 1.0 Revised: Jan. 2018
68
AcuDC 240 Series
DC Energy & Power meters
Response
The slave device answers the master device’s query. The response frame contains slave
device address, function code, data quantity and CRC check. Each DI utilizes one bit
(1=ON, 0=OFF). Table B-7 depicts the response frame.
Table B-7 Response Frame of Reading DI Status
Response
Response frame contains slave device address, function code, data quantity and CRC
check.
Table B-9 depicts the response of V=402851D8H (2.6299953V)
Table B-9 Response Frame of Reading Voltage
Addr Fun Byte Count Data CRC16 Hi CRC 16 Lo
Hex 11H 02H 01H 01H 64H 88H
Dec 17 2 1 1 251 136
B.2.3 Read Data (Function Code 03)
Query
This function allows the master to obtain the measurement results from the meter. Table
B.6 depicts reading slave device (address 1) voltage. The AcuDC 240 voltage address is
0200H-0201H.
Table B-8 Query Frame of Reading Voltage
Addr Fun
Data Start
Reg Hi
Data Start
Reg Lo
Data # of
Regs Hi
Data # of
Regs Lo
CRC16 Hi CRC 16 Lo
Hex 01H 03H 02H 00H 00H 02H C5H B3H
Dec 1 3 2 0 0 2 197 179
Addr Fun Byte Count Data1 Hi Data1 Lo Data2 Hi Data2 Lo CRC16 Hi CRC 16 Lo
Hex 01H 03H 04H 40H 28H 51H D8H 52H 31H
Dec 1 3 4 64 40 81 216 82 49

AccuEnergy AcuDC 241 Specifications

General

Brand	AccuEnergy
Model	AcuDC 241
Category	Measuring Instruments
Language	English