Omron G3PW, User Manual

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Communications Settings Section 6-1
6-1 Communications Settings
6-1-1 Introduction
G3PW Constant-current Models can perform serial communications with EJ1
Modular Temperature Controllers or SYSMAC CS/CJ/CP-series PLCs. The
CompoWay/F communications protocol is used. CompoWay/F is a generic
serial communications protocol from OMRON. An RS-485 interface is used at
the G3PW.
Communications
Specifications
Note CompoWay/F
CompoWay/F is OMRON's standard communications format for general
serial communications.
It uses commands compliant with the well-established FINS used exten-
sively with OMRON Programmable Controllers together with a consistent
frame format to facilitate communications between more than one compo-
nent and between personal computers and components.
FINS (Factory Interface Network Service)
The FINS protocol provides message communications between control-
lers in OMRON FA networks.
6-1-2 Communications Settings
This section describes the communications settings for the G3PW.
Transmission path connections Multipoint
Communications method RS-485 (2-wire, half-duplex)
Sync method Stop-start sync
Baud rate 9.6, 19.2, 38.4 or 57.6 kbit/s
Transmission code ASCII
Data length 7 or 8 bits
Stop bits 1 or 2 bits
Error detection Vertical parity: None, even, or odd
Flow control None