AERCO BMS II BOILER - Manual (Page 4)

FOREWORD
ii
Phrases, Abbreviations and Acronyms - Continued
Phrase, Abbreviation or
Acronym
Meaning
Hex Hexadecimal Number (0 - 9, A - F)
Hz Hertz (Cycles Per Second)
INTLK Interlock
I/O Input/Output
I/O Box Input/Output (I/O) Box currently used on all Benchmark and KC Series
products
IP Internet Protocol
ISO Isolated
LSB Least Significant Byte
LSD Least Significant Digit
MA (mA) Milliampere
MAX (Max) Maximum
MIN (Min) Minimum
Modbus® A serial, half-duplex data transmission protocol developed by AEG Modicon
MSB Most Significant Byte
MSD Most Significant Digit
MS/TP Master-Slave/Token-Passing (usually over RS485 networks)
OFFS Offset
OUTD Outdoor
PTP Point-to-Point (usually over RS232 networks)
REF (Ref) Reference
Response Time The maximum amount of time allowed to receive a response to a request
RS232
(or EIA-232) A standard for serial, full-duplex (FDX) transmission of data based on the
RS232 Standard
RS422
(or EIA-422) A standard for serial, full-duplex (FDX) transmission of data based on the
RS422 Standard
RS485
(or EIA-485) A standard for serial, half-duplex (HDX) transmission of data based on the
RS485 Standard
RTN Return
RTU Remote Terminal Unit
SEN Sensor
SETPT (Setpt) Setpoint Temperature
SHLD (Shld) Shield
SLTA Serial LonTalk Adapter
SYS System
TEMP (Temp) Temperature
Terminating Resistor A resistor placed at each end of a daisy-chain or multi-drop network in order
to prevent reflections that may cause invalid data in the communication
VAC Volts, Alternating Current
VDC Volts, Direct Current
VFD Vacuum Fluorescent Display