![Omron E5CC-T Скачать руководство пользователя страница 20](http://html1.mh-extra.com/html/omron/e5cc-t/e5cc-t_communications-manual_742604020.webp)
1 Communications Methods
1 - 2
E5
C-T Digital Temperature Controllers Programmable Type Communications Manual (H186)
1-1
Overview of Communications
Methods
The program for the communications functions is created on the host (personal computer, PLC, or other
type of communications master), and the E5
@
C-T's parameters are monitored or set from the host.
Therefore, the description provided here is from the viewpoint of the host.
CompoWay/F is OMRON's standard communications format for general serial communications. This
format uses a standard frame format as well as the well-established FINS* commands used for
OMRON's PLCs. Therefore, it can simplify communications between components and the host.
*
FINS (Factory Interface Network service)
The FINS protocol provides message communications between controllers in OMRON FA networks.
Modbus is a standard communications control method that conforms to the Modicon Company's
RTU-mode Modbus Protocol (PI-MBUS-300 Revision J). Modbus is a registered trademark of
Schneider Electric.
It supports functions equivalent to the CompoWay/F Read Variable Area, Write Variable Area, Opera-
tion Command, and Echoback Test functions.
The E5
@
C-T supports the following communications functions.
•
Reading/writing of parameters
•
Operation instructions
•
Selection of setup levels
Communications are subject to the following condition:
•
Parameters can be written only when the Communications Writing parameter is set to ON (enabled).
*
Communications baud rate, data length, stop bits and vertical parity can each be set independently in the
communications setting level. Highlighted values indicate default settings.
1-1-1
Introduction
1-1-2
Communications Specifications
Transmission line connection
RS-485: Multidrop
Communications method
RS-485 (2-wire, half-duplex)
Synchronization method
Start-stop synchronization
Communications baud rate *
9,600, 19,200, 38,400 or 57,600 bps
Communications code
ASCII
Communications data length *
7 or 8 bits
Communications stop bits *
1 or 2 bits
Error detection
Vertical parity (none, even, or odd) *
BCC (Block Check Character) with CompoWay/F communications
CRC-16 (Cyclic Redundancy Check 16) with Modbus
communications
Flow control
None
Interface
RS-485
Retry function
None
Communications buffer
217 bytes
Send data wait time
0 to 99 ms, default time: 20 ms
Содержание E5CC-T
Страница 2: ......
Страница 14: ...Revision History 12 E5 C T Digital Temperature Controllers Programmable Type Communications Manual H186...
Страница 176: ...7 Component Communications 7 8 E5 C T Digital Temperature Controllers Programmable Type Communications Manual H186...
Страница 181: ...Index 1 E5 C T Digital Temperature Controllers Programmable Type Communications Manual H186 I Index...
Страница 184: ...Index 4 E5 C T Digital Temperature Controllers Programmable Type Communications Manual H186...
Страница 185: ......