YOKOGAWA VZ20X, User Manual

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IM 77V01B01-01EN 5th Edition: 2023.03.07-00
1. Outline
1.1 What Is the VZ20X?
The VZ20X Analog Sensing Unit can measure various analog signals at high speed,
high accuracy and simultaneously. Isolation between input channels ensures excellent
noise resistance. VZ20X measurement data can be acquired on a PC, PLC or other host
device via Ethernet. The VZ20X has two Ethernet ports. By making daisy chain
connections*
1
with multiple VZ20X's, time-synchronized measurement of up to 15 units*
2
on 120 channels can be performed.
*1: A "daisy chain connection" refers to a method of connecting multiple electrical and electronic devices in a continuous
line.
*2: The number of connected devices may be limited depending on the performance and operating environment (OS,
CPU, installation software, programming, etc.) of the PC (including GA10 Data Logging Software) and PLC.
1.2 System Configuration
The following describes the system configuration of the VZ20X.
●
Ethernet communication
The VZ20X can be used when connected to a host device such as PC/PLC, etc. Data
can be acquired in a daisy chain connection regardless of the time synchronization
setting. A maximum of 15 units*
1 can be connected in a daisy chain connection.
The parameter settings, monitoring and input adjustment can be made by VZ
Configurator.
*1: The number of connected devices may be limited depending on the performance and operating environment (OS,
CPU, installation software, programming, etc.) of the PC (including GA10 Data Logging Software) and PLC.
CAUTION
・
The VZ20X does not support a circular loop configuration as in a daisy chain
connection.
・
When connecting in a daisy chain, match the data acquisition interval of the VZ20X
in the system.
The figure below shows an example of VZ20X's connected in a daisy chain
configuration.