Communication; Protocol; General String Structure; Send String Structure (As Seen From The Master) - LEYBOLD GRAPHIX ONE Instruction Manual

8.2

Communication

8.2.1

Protocol

The following protocol is used for communication:
 8 data bits
 No parity bit
 1 stop bit
The baud rate is selectable
No hardware handshake is used. Messages are transferred by way of ASCII strings. A
semicolon (0x3B) in the string is processed as a separating character. Space characters
(0x20) or tab stop characters (0x09) may be contained in the string. As to communication,
the computer is always the master. The input buffer of the computer must offer a capacity
of at least 512 bytes.
8.2.2

General String Structure

When using the interfaces RS232 or RS485, the send and receive strings differ inasmuch
when using the RS485 interface the respective string is preceded by the address of the
RS485 interface. For the send string, state the address in hexadecimal notation (for example
address 10 = 0A). You may assign an address from the range of 1 to 126.
8.2.2.1

Send String Structure (as seen from the Master)

Read:
Write:
98
( Chapter 7.3.4 Baud Rate (Data Rate), page 82).
GA300550402_002_C1 – 10/2016