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NetLinx Programming

MAX-CSE/MAX-CSD10 Operation/Reference Guide

RS-232/422/485 Send_String Escape Sequences (Port 2)

This device also has some special SEND_STRING escape sequences:

If any of the 3 character combinations below are found anywhere within a SEND_STRING program

instruction, they will be treated as a command and not the literal characters.

In these examples: <DEV> = device.

RS-232/422/485 Send_String Escape Sequences

Command Description

27,17,<time>

Send a break character for a

specified duration to a

specific device.

Syntax:

SEND_STRING <DEV>,"27,17,<time>"

Variable:

time = 1 - 255. Measured in 100 microsecond increments.

Example:

SEND_STRING RS232_1,"27,17,10"

Sends a break character of 1 millisecond to the RS232_1 device.

27,18,0

Clear the ninth data bit by

setting it to 0 on all character

transmissions.

Used in conjunction with the 'B9MON' command.

Syntax:

SEND_STRING <DEV>,"27,18,0"

Example:

SEND_STRING RS232_1,"27,18,0"

Sets the RS232_1 device's ninth data bit to 0 on all character transmissions.

27,18,1

Set the ninth data bit to 1 for

all subsequent characters to

be transmitted.

Used in conjunction with the 'B9MON' command.

Syntax:

SEND_STRING <DEV>,"27,18,1"

Example:

SEND_STRING RS232_1,"27,18,1"

Sets the RS232_1 device's ninth data bit to 1 on all character transmissions.

27,19,<time>

Insert a time delay before

transmitting the next

character.

Syntax:

SEND_STRING <DEV>,"27,19,<time>"

Variable:

time = 1 - 255. Measured in 1 millisecond increments.

Example:

SEND_STRING RS232_1,"27,19,10"

Inserts a 10 millisecond delay before transmitting characters to the RS232_1

device.

27,20,0

Set the RTS hardware

handshake's output to high

(> 3V).

Syntax:

SEND_STRING <DEV>,"27,20,0"

Example:

SEND_STRING RS232_1,"27,20,0"

Sets the RTS hardware handshake's output to high on the RS232_1 device.

27,20,1

Set the RTS hardware

handshake's output to

low/inactive (< 3V).

Syntax:

SEND_STRING <DEV>,"27,20,1"

Example:

SEND_STRING RS232_1,"27,20,1"

Sets the RTS hardware handshake's output to low on the RS232_1 device.