Specifications

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RS-232/422/485 SEND_STRING Escape Sequences

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.