Panasonic FP3 Technical Manual page 143

link unit:
malfunction:
Master Control Relay:
MEWTOCOL - COM:
modem:
Most Significant Bit (MSB):
Most Significant Digit (MSD):
multidrop link:
noise:
non - hold:
normally - closed contact:
normally - open contact:
offline:
online:
[Link number for high-level link system]
"H link 1", "H link 2" and "H link 3"
Link units available for FP3 and FP10S are classified into two types: those for the
"standard link system" and those for the "high-level link system".
Units for the "standard link system" and "high-level link system" are listed as:
- Units for the standard link system:
C.C.U. (Computer Communication Unit), C-NET Link Unit,
MEWNET-P (Optical) Link Unit, MEWNET-W (Wire) Link Unit
- Units for the high-level link system:
ET-LAN Unit, MEWNET-H Link Unit
Incorrect function.
A relay which controls any series of programs with its operation. If the master control
relay is de-energized, all of the contacts and devices controlled by the master control
relay are de-energized.
A communication protocol for FP series programmable controllers that performs
communication between a computer and programmable controllers.
Abbreviation for MOdulator/DEModulator. The modem modulates digital signals
and transmits them through a telephone line.
The bit which represents the greatest value in a byte, word, or double-word.
The digit which represents the greatest value in a number.
A communication link in which one host can communicate with two or more stations.
Random, unexpected electrical signals, that are caused by radio waves or by
electrical or magnetic fields.
The memory area whose contents will be lost or modified if operating power is lost
or if the mode of the programmable controller is changed from RUN to PROG.
A contact which is closed when the coil of the relay is not activated.
A contact which is open when the coil of the relay is not activated.
Not being in continuous communication with another processor.
Being in continuous communication with another processor.
8-6. Terminology
H link 3 (ET - LAN unit)
H link 2 (ET - LAN unit)
H link 1 (ET - LAN unit)
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