Pc Format Binary Format; C Interface Parameters - Siemens SINUMERIK 840D Operator's Manual

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Services Operating Area
7.4 RS-232 C interface parameters

7.3.2 PC format binary format

References
7.4 RS-232 C interface parameters
Protocol
7-254
Files which contain non-displayable characters/binary format can only
be saved in PC format.
/IAD/Start-up: Section "Line checksum".
•
If you save files in PC format and then edit them with a text
editor, you will not be able to re-import them again. The file
cannot be edited because the checksum will then no longer be
correct.
•
Start-up and update data must always be saved in PC format.
The following protocols are supported for transmission via RS-232-C:
•
XON/XOFF and RTS/CTS,
•
Software Flow Control and Hardware Flow Control
XON/XOFF
It is possible to set the two modes on the user interface for RS-232-C
transmissions, i.e. Wait for Xon for data receive and Send Xon for
data transmission. The default setting is H11 or H13.
Input: Is done by selecting in "Interface" display with the cursor keys
and the "Input" key.
One possible way of controlling transfer is to use control characters
XON (DC1, DEVICE CONTROL 1) and XOFF (DC3). If the buffer of
the peripheral device is full, it sends XOFF and XON as soon as it can
receive data again (= default).
RTS/CTS
The signal RTS (Request To Send) controls the transmission of the
data transmission equipment.
Active: Data can be transmitted.
Passive: The signal CTS (Clear to send) is an
acknowledgement signal for RTS that the
Data transmission equipment is ready to transmit.
SINUMERIK 840D/810D Operator's Guide HMI Embedded (BEM) – 03.04 Edition
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03.04
 Siemens AG, 2004. All rights reserved