A
Assembly Object: A CIP data container that groups I/O points for exchange between devices on an EtherNet/IP network.
B
BACnet: Building Automation and Control Networks, an open protocol standard based on objects, properties, and services.
BACnet/IP: BACnet transported over UDP/IP using the BACnet Virtual Link Layer.
BACnet MS/TP: BACnet Master-Slave/Token-Passing over RS-485 serial wiring.
BBMD: BACnet Broadcast Management Device used to move BACnet/IP broadcast traffic across subnets.
Byte Order: The arrangement of bytes inside a multi-byte value.
C
CIP: Common Industrial Protocol, the application layer used by EtherNet/IP and related industrial networks.
Coil: A single-bit read-write Modbus point.
COV: BACnet Change of Value reporting where a device transmits updates only when a property changes sufficiently.
D
DATA_TABLE_READ / WRITE: EtherNet/IP access modes that determine whether a gateway reads from or writes to PLC data tables.
Device Instance: The unique numeric identifier assigned to each BACnet device.
Discrete Input: A single-bit read-only Modbus point.
E
EDS File: Electronic Data Sheet describing an EtherNet/IP device’s supported objects and configuration behavior.
Endianness: See Byte Order.
EtherNet/IP: Industrial Ethernet protocol that carries CIP over standard Ethernet networks.
Explicit Messaging: EtherNet/IP Class 3 request-response messaging used for configuration and on-demand reads.
F
FDR: Foreign Device Registration for BACnet/IP.
FieldServer: Chipkin’s gateway platform for legacy and specialty protocol work.
G
Gateway: A hardware or software device that translates data between different protocols.
H
Holding Register: A read-write 16-bit Modbus point.
I
I-Am: BACnet discovery response sent after a Who-Is request.
Implicit Messaging: EtherNet/IP Class 1 cyclic I/O messaging.
Input Register: A read-only 16-bit Modbus point.
M
Max Masters: BACnet MS/TP parameter that defines the highest MAC address polled for token passing.
Modbus: Industrial protocol for point-oriented data exchange over serial or TCP/IP.
Modbus RTU: Serial Modbus with binary framing and CRC error checking.
Modbus TCP: Ethernet Modbus carried over TCP/IP with an MBAP header.
P
Point Map: The configuration table that defines how a gateway translates source data into destination data.
Protocol Conversion: The process of translating data between incompatible protocols through a gateway.
Q
QuickServer: Chipkin’s current-generation protocol-conversion gateway platform.
R
Register Map: Vendor-provided documentation listing available Modbus registers, addresses, data types, and access behavior.
RS-485: Differential serial physical layer widely used by Modbus RTU and BACnet MS/TP.
T
Token Passing: The media-access method used by BACnet MS/TP.
Toolbox: Discovery and connectivity utility used with FieldServer and QuickServer gateways.
V
Veeder Root: Fuel-tank monitoring protocol family commonly bridged into supervisory systems.
W
Who-Is: BACnet discovery request used to locate devices on a network.
Word Order: The arrangement of 16-bit words inside a larger Modbus value.