G3 Series EtherCAT
TM
Technical Manual
16-185
Subject to change without notice
www.asco.com/g3
Glossary of Terms Continued
Term Description
NEMA National Electrical Manufacturers Association
Network A group of nodes connected by a communication medium through repeaters, router, and gateways.
Node A device on the network that contains a single MAC Address, which can communicate over a subnet.
Octet 8 bits of information. An IP address is made up of four octets.
Ping A group of messages sent between a master and a slave that coordinates time.
Ping Request A request to see if a device has received a message.
Ping Response Response to a ping request.
Packet Interval
The frequency measure of the required transmission of data from the originating device to the target
device.
Segment Nodes connected to a continuous section of communication media.
Management
Protocol (SNMP)
A protocol used to monitor Ethernet devices, switches, routers, and networks connected by
communication media.
Sinking (NPN)
Method of connecting electrical circuits in which the zero (0) volt DC side is switched and the common is
Sourcing (PNP)
Method of connecting electrical circuits in which the positive side is switched and the common is zero (0)
volts DC.
Status Input bit
A bit in the input table that reports the health of a corresponding output. Indicates short circuit or open
coil (load) diagnostics
Subnet Nodes using the same protocol and shared media access arbitration.
System Contains one or more domains.
A method used in best-effort delivery systems to negate endlessly looping packets.
Unicast A transmission where a packet is sent to a single node.
Word 2 Bytes (16 bits)
Z-Board
TM
Circuit board installed in the valve manifold which electrically connects the valve solenoid to the electrical
/electronics interface. Available in single or double solenoid versions.
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