0BOverview
1-10
Overview
Configuration
This product is used in the unit independent or multiple-unit connection configuration (connection of
the measurement master with functional slave and CT extension slave).
* Available combinations of connections have been prepared for models. For details, refer to "List
of Combinations in Model KM1/KE1 Series" on Page A-19.
z
Multiple-unit connection
Connecting the measurement master to a functional slave or a CT extension slave can expand
functions.
(Functional slaves cannot be connected to each other.)
In addition, a CT extension slave must be connected to the measurement master.
* A CT extension slave behaves when power voltage is applied from the measurement master.
Connection of units uses a horizontally connecting hook and a connector. Appropriately insert the
connector to send and receive data between the units and to apply power voltage.
Inappropriate insertion may cause problems, such as data communication error and power failure
in the unit. (Figure 2)
* For the connection procedures, refer to Page 2-7.
Figure 1
Figure 2
If settings of a functional slave or a CT extension slave are changed directly not via the
master when multiple units are connected, supply the power to the system all over again.
* As shown in Figure 3, prevent multiple wiring for RS-485 connection within a system.
Figure 3
PMU1A
(Electric
power)
EMU8A
(Pulse/
temperature)
CTD8E
(CT
expansion)
CTD8E
(CT
expansion)
RS-485
CTD8E
(CT
expansion)
1 System
Master/slave
Measurement data
Power
voltage
Occurrence of communication errors
Measurement data
NG
OK
Note: Power voltage is applied to the CT extension slave only.
Attach the connector.
