Azbil ALTJ 9000 Series, User Manual, Page: 30 / 68

7-2
Chapter 7 Operation
7-1 Preparations for Operation
„
Connecting the Communicator (CommStaff)
The communication method ofthe transmitter is SFN communication.
The following figure shows the wiring for connection of a communicator and this device.
For SFN communication using CommStaff, be sure to connect the cable and terminals of
this device as shown below.
y
Red wire: (S+) terminal
y
Black wire: SUPPLY- (S-) terminal
Handling Precautions
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For communication with the communicator, an external load resistance of 250 Ω
or more is needed. If the total load resistances on the receiver side is less than
250 Ω, insert a resistor of the appropriate size into the loop.
DC power
+
−
Fig. 7-1. Connecting with the communicator
„
Checking the Settings
Check using the communicator (CommStaff) that the settings necessary for operation are
made correctly. When changing any setting, make sure that the specifications set for this
device comply with those at the installation location.
y
Hardware Write Protection
Hardware write protection is switched ON and OFF by sliding switch SW1 on the electron-
ics module of the probe.
Hardware write protection is set to OFF at the factory to allow users to change the settings.
When hardware write protection is set to ON, the settings cannot be changed.
y
Hardware write protection ON/OFF: SW1 ( Fig. 7-2 )
ON side : Hardware write protection is ON.
OFF side (not marked) : Hardware write protection is OFF.
SUPPLY-
250 Ω
Black wire
Red wire