Panasonic S-LINK V User Manual page 178

Appendix
Term
N
Node
Number of I/O
O
OFF voltage
ON voltage
Open collector output
P
Parallel communication
PLC
PLC input module
PLC output module
Power supply capacity
Protocol
R
Refreshing time
Response delay
RUN mode
S
Serial communication
Shorting piece
Shorting piece (Controller)
T
Total cable length
Transmission cable
Transmission mode
Troubleshooting
V
VCTF cable
Voltage drop
178
Number of I/O units / 1 unit = 1 node
Total number of signals that are used by the controller to control the input and output points areas
Voltage to keep the input unit at the OFF status
Voltage to keep the input unit at the ON status
One of no-contact output terminals. This terminal is the collector terminal (final output) of the transis-
tor and is used as the terminal for connection to the external load. There are two types of open col-
lector outputs: NPN and PNP types. Select the optimum type for the transistor.
A signal line is prepared for each data bit in order to carry out the simultaneous communication.
Abbreviation of 'programmable logic controller.' A PLC normally means the sequence control unit of
stored program type.
This module converts the external signals received from the operation units and various sensors into
logical signals. This module can be attached to and removed from the PLC.
This module converts the logical signals into different signals that can be used for operation of the
external units. This module can be attached to and removed from the PLC.
Design adopted for the system to ensure safety even if the system performs abnormal operation or
malfunctions
Rule preliminarily determined to clarify how to transfer data between the controller and the units
Time required for data transfer between the controller and the I/O units
When the signal of the external connection terminal is changed, it takes some time for the other ter-
minal to respond the change in the signal. This time difference is referred to as the response delay.
This mode is used for normal operation of the controller. In this mode, the controller will communicate
with the I/O units and refresh the I/O signals.
Data bits are arranged in series from the viewpoint of time, and transmission will be carried out using
one transmission line by sequentially outputting data
Metal piece used for shorting the power supply terminal to the common terminal at the I/O terminal
Metal piece used for shorting the power supply terminal of the controller to the power supply terminal
of the transmission cable
Sum total of the main line length and branch line lengths
This length depends on the transmission mode.
This cable is used for connection of I/O units that are controlled by the S-LINK V protocol. This cable
consists of 4 wires: +24V and 0V power supply line wires and D and G signal transmission line wires.
In this mode, the controller will communicate with the I/O units.
To investigate the cause of a problem (malfunction of a unit, etc.), and to solve the problem or taking
measures against the problem while following the specified procedure
Vinyl cabtyre round cable specified in JIS C 3306
For the S-LINK V system, you can use the non-shielded vinyl cabtyre round cable having conductor
2
cross section of 0.3 to 2.0mm .
Voltage drop occurs in the power supply cable due to the cable resistance.
Description