YASKAWA SERVO Manual de usuario Pagina 116

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7 Serial Command Communications
7-6
7.5 Echoback Response Time
The following diagram shows the response time from the command transmission until the echoback.
<Example>
Echoback response time when PnB00 = 1 (9600 bps):
Start bit
High impedance
Stop bit
t
E
High impedance
Echoback
Command
PnB00 (Protocol) Settings
t
E
Min. t
E
Max.
1: Full-duplex wiring is used for communications
method.
Echoback is performed for each character.
(Centered at the command stop bit)
3: Half-duplex wiring is used for communications
method.
CR is used as the delimiter.
Echoback is performed for each character.
4: Half-duplex wiring is used for communications
method.
CR is used as the delimiter.
Echoback is performed for each command.
6: Half-duplex wiring is used for communications
method.
CRLF is used as the delimiter.
Echoback is performed for each character.
7: Half-duplex wiring is used for communications
method.
CRLF is used as the delimiter.
Echoback is performed for each command.
Bit rate × 2
1
Bit rate × 2
1
100 μs +
Bit rate × 2
1
250 μs
Bit rate × 2
1
600 μs +
Bit rate × 2
t
E
min. =
1
=
9600 × 2
1
= 52 μs
When using half-duplex wiring, the host controller must set the line driver to high impedance within the
t
E
min. response time.
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