INFICON VGC401 Single-Channel Controller - Manual (Page 58)

58
tinb01e1-f (2011-07) VGC401.om
HOST VGC401 Explanation
Mnemonics
[and parameters] ––––––>
[] –––––––––->
Receives message with
"end of message"
<––––- Positive acknowledgment
of a received message
-–––––––––––––> Requests to transmit
<––––––--– Measurement
values or
parameters
<––––––––––
Transmits data with
"end of message"
: :
–––––––––––––> Requests to transmit
<––––––--– Measurement
values or
parameters
<––––––––––
Transmits data with
"end of message"
All strings received are verified in the VGC401. If an error
is detected, a negative acknowledgment is
output. The appropriate flag is set in the ERROR word.
Errors can be decoded when the ERROR word is read.
HOST VGC401 Explanation
Mnemonics
[and parameters] ––––-–>
[] -–––––––––>
Receives message with
"end of message"
***** Transmission or programming error *****
<–––– Negative acknowledgment
of a received message
Mnemonics
[and parameters] –––––->
[] –––––-––––>
Receives message with
"end of message"
<––––- Positive acknowledgment
of a received message
Reception protocol
Error processing
Error recognition
protocol