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Echelon i.LON SmartServer 2.0 User Manual

Page 253

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i.LON SmartServer 2.0 Programmer’s Reference

15-4

Property Description

This element contains the following options for Modbus
channels attached to the RS-232 or RS-485 serial ports on the
SmartServer ( is CT_RS485_MASTER
or CT_RS232 _MASTER):

. The baud rate at which the SmartServer

communicates with the Modbus devices on the channel.
The default value is MS_9600. This property may be one
of the following values:

ƒ MS_110
ƒ MS_300
ƒ MS_600
ƒ MS_1200
ƒ MS_2400
ƒ MS_4800
ƒ MS_9600
ƒ MS_19200
ƒ MS_38400
ƒ MS_57600
ƒ MS_115200

. The data bit size for messages sent over the

Modbus network. A data bit is a group of 5 to 8 bits that
represents a single character of data for transmission over
the network. Data bits are preceded by a start bit, and they
are followed by an optional parity bit and one or more stop
bits. The default value is CS_8. This property may be one
of the following values:

ƒ CS_5
ƒ CS_6
ƒ CS_7
ƒ CS_8

. The parity bit size for messages sent over

the Modbus network. A parity bit is an extra bit used to
check for errors in groups of data bits transferred between
devices. The default parity size is P_NONE. This property
may be one of the following values:

ƒ P_NONE
ƒ P_ODD
ƒ P_EVEN

. The number of stop bits used on the

Modbus network. The default value is SB_1. This property
may be one of the following values:

ƒ SB_1
ƒ SB_2

This property is not available for TCP/IP Modbus channels.