AnyWireASLINK
4-2
4.2 Slave units
Types of slave units
This product uses slave units for the AnyWireASLINK system.
The following types of slave units can be used.
Unit type
Slave
I/O terminal
ASLINK terminals and the like
Analog terminal
Analog input unit and the like
Sensor/amplifier
ASLINK sensor and the like
Other hardware
Small display unit and the like
Confirm the model name and type of the slave unit by using the separate AnyWireASLINK system
catalog.
Number of slave units connected
The maximum number of slave units that can be connected to one line of the AnyWireASLINK system
is 128 units.
(It is necessary that both the total number of points occupied by slave units and the total consumption
current of the transmission line do not exceed the maximum number of transmission points and the
allowable supply current.)
Connection of slave units
There are roughly two types of methods for the connection of AnyWireASLINK slave units.
One is the
“two-wire (non-isolated) type” method and the other is the “four-wire (isolated) type” method.
Classification
Operation
Two-wire (non-isolated) type
Slave units and connection loads are driven with just two
transmission lines.
Four-wire (isolated) type
Two transmission lines are used to drive the transceivers. Slave units
and connection loads are driven by two external power supply lines.
This is selected when the allowable supply current via two
transmission lines is insufficient, or when you wish to separate the
power supply to the load.
Any configuration consisting of the two-wire type only, the four-wire type only, or a mixture of two-wire
and four-wire types can be used.
The choice whether to use a two-wire type or a four-wire type depends on the slave unit.
