C-1
Model 0254
Section C Serial Communications Protocol
Installation and Operation Manual
X-SE-0254-eng
Part Number: 541B129AAG
September, 2010
C-1 Overview
This section describes in detail the various aspects of providing the Model
0254 commands and responses that result in operating value
programming—fundamental to employing the system for acquiring and
communicating measured information—and providing for process control
output.
Firmware
Serial communication is supported by firmware versions V10.05.13 and
later, see Section 3-5-1 for more information on the firmware version.
Structure
The Model 0254 is a general platform into which are installed certain
standard and special operating modules. This section focuses on standard
universal input-output module offerings. The platform supports input signal
measures and control output signals. The platform supports various
communication facilities.
Channels and Ports
The Model 0254 is comprised of pairs of ports, each of which has an input
and output to form a channel, with four channels total.
Channel and port numbering
C-2 Communication Settings
C-2-1 RS-232 Port Settings
The RS-232 serial port setting of the PC which is used to communicate
with the 0254 Read Out needs to be as follows:
Bit Rate 9600
Data Bits 8
Parity None
Stop Bits 1
Flow Control None
Chan nel Number
Port Number
Port Typ e
Description
1
Input
Input Port Settings
2
Output
Output Port Settings
3
Input
Input Port Settings
4
Output
Output Port Settings
5
Input
Input Port Settings
6
Output
Output Port Settings
7
Input
Input Port Settings
8
Output
Output Port Settings
N/A
9
Global
Global Settings
1
2
3
4
