YOKOGAWA UTAdvanced Series, User Manual

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4-18
IM 05P07A01-01EN
The function can read periodically the process data from a maximum of 8 serial devices,
store them in the UT75A/UT55A/UT35A/UP55A/UP35A, and return the response at high
speed.
However, the function can be used for a maximum of 7 serial devices connected to the
RS-485 communication line because the serial communication address “1” is for UT75A/
UT55A/UT35A/UP55A/UP35A.
Note
• The period to read the process data from other serial devices cannot be specified.
The UT75A/UT55A/UT35A/UP55A/UP35A reads the process data by the fastest
automatically according to the number of serial devices for which the function is used.
• If the number of serial devices for which the function is used is particularly large, the process
data value of each serial device stored in the UT75A/UT55A/UT35A/UP55A/UP35A may be
delayed relative to the actual process. If the delay becomes a problem, turn this function off.
4.6.2 How to Set the Function
The parameter HSR specifies the operation of the function.
Parameter
symbol
Group
display
Name Setting Range Menu symbol Initial value
HSR E3
High-speed
response mode
0: OFF (The process data high-speed response
function is not used.)
1: The process data of the device itself is returned as
a response at high speed.
2 to 8 :The process data of the device itself and the
process data from the serial devices connected to
the RS-485 communication line are returned as
a response at high speed. Specify the maximum
address of the serial devices.
Note: Set the continuous communication address
which begins from “2” for other serial
communication devices connected to the RS-485
communication terminals.
After setting the parameter HSR, set “1” for the
parameter ESW to update the setting. If you
change other parameters, update the setting at
the end.
ETHR 1
Note
• A maximum of 31 serial devices are connectable to the RS-485 communication line. Set
the serial communication address (2 to 99) for each device so that the host computer can
access using the Ethernet-serial gateway function.
However, the function can be used only for the serial devices with the continuous
communication addresses from 2 to 8. Set the serial communication addresses from 2 to 8
for the serial devices for which the function is to be used.
• Simply changing the value for the above parameters does not enable the setting content.
Be sure to update the setting content by setting the Ethernet setting switch (ESW) to ON (1)
after the setting is made.
The setting content is also enabled by performing the power ON/OFF operation of the
UT75A/UT55A/UT35A/UP55A/UP35A.
* It takes about 20 seconds for the new settings of the Ethernet communication parameters to be enabled.
4.6 Process Data High-speed Response Function