Rockwell-automation 1769-ASCII Compact I/O ASCII Module Manual do Utilizador descarregar pdf (Página 80)

80 Rockwell Automation Publication 1769-UM012B-EN-P - January 2014

Chapter 3 I/O Memory Mapping

Set Up the Receive Delimiters

The receive Start Delimiter is a start-of-string character used by the 1769-ASCII

module to determine that the first expected character from the ASCII device is

received. Upon receipt of this character, the 1769-ASCII module starts storing

the string data in its internal data buffer on the serial receive side.

The receive Stop Delimiter is an end-of-string character used by the 1769-ASCII

module to determine that the last expected character from the ASCII device is

received. Upon receipt of this character the 1769-ASCII module update its

internal data buffer on the serial receive side. The module also makes the new

string available to the CompactBus Master in the Produce buffer.

The receive delimiters can be set to any valid ASCII character that can be

received over the link. Be sure to avoid setting the delimiter to a value outside of

the valid range for your data bits. For example, a data bit size setting of 7 gives you

a delimiter range of 0…127 decimal, 00…7F hexadecimal.

If you do not receive a valid receive delimiter, the device updates the Produce

buffer on detection of a buffer full (overflow) condition only. For example, the

device updates when it receives the number of characters defined in the Max

Number of Receive Characters parameter. The device also updates if a time-out

occurs (if you selected the time-out option).

The Receive Data, Transmit Data Swap, Handshake mode, MSG Timeout, and

Pad Character are all handled per channel on the Advance Configuration tab in

the Add-On Profile.

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 117 118

Sem comentários

Modely	Typ Dokumentu
MT 2615	Uživatelský manuál Vivanco MT 2615, 1 stránky
WTL 2	Provozní pokyny Vivanco WTL 2, 1 stránky
WTL 4	Provozní pokyny Vivanco WTL 4, 1 stránky
WTL 1	Provozní pokyny Vivanco WTL 1, 1 stránky
WTS 2	Provozní pokyny Vivanco WTS 2, 1 stránky
33392	Uživatelský manuál Vivanco 33392 flat panel wall mount [en] , 4 stránky
MP4735	Manuál s instrukcemi Vivanco MP4735 flat panel wall mount, 2 stránky
WTS 4	Provozní pokyny Vivanco WTS 4, 1 stránky
ULTRA SLIM 400	Uživatelský manuál Vivanco ULTRA SLIM 400, 1 stránky
WTL 6	Provozní pokyny Vivanco WTL 6, 2 stránky
WTS 1	Provozní pokyny Vivanco WTS 1, 1 stránky
WTS 3	Provozní pokyny Vivanco WTS 3, 1 stránky
WM 3735	Uživatelský manuál Vivanco WM 3735, 2 stránky
MF 2615	Uživatelský manuál Vivanco MF 2615, 1 stránky

Rockwell-automation 1769-ASCII Compact I/O ASCII Module Manual do Utilizador Página 80