ONICON System-10 MODBUS - Manual (Page 5)

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System-10-MOD Network Interface Installation Guide 05/14 - 0653-10 / 18321
Page 5
SECTION 1: INTRODUCTION
1.1 PURPOSE OF THIS GUIDE
The purpose of this guide is to provide installation procedures and basic operating and servicing
instructions for the ONICON System-10 MODBUS RTU serial interface.
1.2 TYPICAL SYSTEM-10 BTU METER
ONICON’S System-10 is a true heat (Btu) computer, which accepts data from several sensors,
performs a series of computations with that data, and displays and/or transmits the results as an
indication of the amount of heat (Btu’s) being transferred per unit time or as a totalized amount.
1.3 SPECIFICATIONS
MODBUS RTU NETWORK INTERFACE
RS485
Transceiver: 2-wire, half-duplex
Data format: 8 bit with 1 stop bit
Parity: None
MAC address (device address) range: 1 - 247 (Default: 017)
Baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600 or 115200 (Default: 9600)
Termination: 120 ohms or none (Default: none)
Biasing: None
Flow control: None
TCP/IP
Transceiver: 10Base T, 10Mbps, Rj45 connection
Data format: 8 bit with 1 stop bit
Parity: None
MAC address (device address) range: 1 - 247 (Default: 017)
Default IP address: 192.168.1.24 (Port 502)
Flow control: None
Heat Exchanger
SCROLL RESET PROGRAM
BTU X 10,000
ONICON insertion
flow meter (purchased
separatelly)
24 VAC input
MODBUS RTU
Communications to
Network
Supply Temp
Sensor
Return Temp
Sensor
Supply
Return
SYSTEM-10
BTU METER