Yokogawa JUXTA VJ Series Limit Alarms - Manual (Page 3)

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IM 77J01J11-01E 3rd Edition : Oct. 15, 2007-00
Introduction
This instruction manual describes the communication functions of the VJ Series signal
conditioners and contains information on how to create communication programs.
Read the manual carefully to understand the communication functions of the VJ Series.
The VJ Series signal conditioners have the following communication protocols.
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PC link communication protocol
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MODBUS communication protocol
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Ladder communication protocol
Note that the VJ Series signal conditioner cannot communicate with a higher-level device
with a communication protocol other than these.
You are required to have background knowledge of the communication specifications of
higher-level devices, their communication hardware, language used for creating communi-
cation programs, and so on.
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Intended Readers
This manual is intended for people familiar with the functions of the VJ Series signal condi-
tioners, control engineers and personnel in charge of maintaining instrumentation and
control equipment.
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Related Documents
The following instruction manuals all relate to the communication functions of the VJ series
signal conditioners. Read them as necessary.
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A variety of instruction manuals for VJ Series signal conditioners describing mounting,
wiring, and how to calibrate the signal conditioners.
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