PPC Manual Revision 1
Chapter 21: Modbus/TCP Communication
21.6 Process Data High-speed Response Function
21.6.1 Overview
When Process Data High-speed Response Function is not Used
RS-485 communication
Ethernet 10BASE-T cable
(1)
(2) (3)
(4)
(1) The host computer sends the command to read the
process data from the serial devices through the
PPC5.
(2) The PPC5 sends the command to the serial devices
using the Ethernet-serial gateway function.
(3) The serial devices return the process data.
(4) The PPC5 sends the received process data to the
host computer using the Ethernet-serial gateway
function.
RS-485
rear terminal
communication
connection
Response speed : Low
Host computer
RS-485 communication
RS-485 communication
RS-485 communication
RS-485 communication
RS-485
communication address = 01
PPC5 with Ethernet function
When Process Data High-speed Response Function is Used
(1)
(2)
(1) The host computer sends the command to read the
process data from the serial devices through the
PPC5.
(2) The PPC5 returns the process data of the serial
devices stored in the PPC5 to the host computer.
Response speed : High
Periodical read of
the process data
RS-485 communication
Ethernet 10BASE-T cable
RS-485
rear terminal
communication
connection
Host computer
RS-485 communication
RS-485 communication
RS-485 communication
RS-485 communication
RS-485
communication address = 01
PPC5 with Ethernet function
Note: The High-speed Response
Function is only available for
retrieving data from PPC5 RS-485
devices (PPC5-1x01).
To Next Page
Loading...
Need help?
General
