Pfeiffer TPG 261 - Page 68

68
BG 5195 BEN / A (2011-05) TPG261.oi
HOST TPG 26x Explanation
Mnemonics
[and parameters] ──────────>
<CR>[<LF>] ─────────────>
Receives message
with "end of mes-
sage"
<───────── <ACK><CR><LF>
Positive acknowledg-
ment of a received
message
<ENQ> ─────────────────>
Requests to transmit
data
<────── Measurement values
or parameters
<────────────── <CR><LF>
Transmits data with
"end of message"
: :
<ENQ> ──────────────────>
Requests to transmit
data
<────── Measurement values
or parameters
<────────────── <CR><LF>
Transmits data with
"end of message"
The strings received are verified in the TPG 26x. If an
error is detected, a negative acknowledgment <NAK> is
output.
HOST TPG 26x Explanation
Mnemonics
[and parameters] ──────────>
<CR>[<LF>] ─────────────>
Receives message
with "end of mes-
sage"
***** Transmission or programming error *****
<───────── <NAK><CR><LF>
Negative acknowl-
edgment of a re-
ceived message
Mnemonics
[and parameters] ──────────>
<CR>[<LF>] ─────────────>
Receives message
with "end of mes-
sage"
<───────── <ACK><CR><LF>
Positive acknowl-
edgment of a re-
ceived message
Reception protocol
Error processing
Error recognition
protocol