Outline; Overview - Toshiba TOSDIC-CIE DS Instruction Manual

1. Outline

1.1. Overview

MODBUS/TCP server communicates with OIS-DS/SMART or PLCS (PLC connection
function) by using MODBUS/TCP protocol.
MODBUS/TCP data are Coils, Input Discrete, Holding Registers and Input Registers.
The figure 1.1 shows the overview when MODBUS/TCP server is connected.
OIS
Tag Pattern
Station Status
Remote Operation
Figure1.1. Overview when MODBUS/TCP server is connected
PLC Connection
(MODBUS/TCP Client)
Data Collection
(5)
(6)
Input
Registers(PLCS)
990W
Digital Registers
(7)
Analog Registers
System Alarm
Registers
(8)
Write from PLC
Connection
：proccess or data flow
(*1) When this is the request to write SV or RFO data,
an application in MODBUS/TCP server will carry out this request.
MODBUS/TCP Server
MODBUS
(1)
Data
(2)
Coils
(3)
Input Discrete
(4)
Holding Registers
(9)
Input Registers
1.Outline
(*1)
(10)
1