ToolLink User Manual
MKS Instruments, Inc.
Page 23 of 30
TX Counter:
If the TX Handshaking is enabled, the TX Counter must be incremented from its previous
value (0-255) in order for the message in the data field to be transmitted. Setting TX Counter to ‘0’ will
reset the value of TX Acknowledge. If TX Handshaking is disabled, the value of TX Counter is ignored
and the message in the Data field is transmitted each time it is written.
Baud Rate – Attribute 6
Baud Rate controls the communications rate with the serial connection and must match the setting of the
connected serial device.
Value Baud
Rate
0 19200
1 600
2 1200
3 2400
4 4800
5 9600
6 19200
Parity – Attribute 7
The Parity attribute sets the format for characters transmitted and received across the serial connection.
Note, that the connected serial device must be configured for an identical character format.
Value Parity Format
0
None
1 Start, 8 Data, 1 Stop
1
Odd
1 Start, 7 Data, Odd Parity, 1 Stop
2
Even
1 Start, 7 Data, Even Parity, 1 Stop
Flow Control – Attribute 8
Value Mode
0 None
(default)
1 XON/XOFF
(Software)
2 CTS/RTS
(Hardware)
Note that with software flow control, X-ON (CTRL-Q, ASCII 0x11) and X-OFF (CTRL-S,
ASCII 0x13) are extracted from the data stream. So, software flow control should not be
used to transmit binary data containing these characters.
Receive Mode – Attribute 9
Value Mode
0 Time-Out
(default)
1 Length
