inout RePlay 01, Руководство пользователя

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Replay User Manual v.
1.2
Page 34
Message waiting time (CMDR)
This is the delay time of the reply message, required by some computers to switch over
between the state of transmission and the state of reception.
The awaiting time determines the minimum delay before the Replay sends data in reply to
the message received from the Master. Set this time at a value different from
0 only if the
specifications of the Master demand it, since the delay determines an extension of the time
needed to complete the command.
10.3 NAK reply by Replay
The reply with the character NAK is sent from Replay to the master when any kind of error
is detected in the message received.
10.4 Transmitting a command by master
When you send a command from the master to Replay using one of the dedicated
protocols, make sure you send it with a delay of at least 10mS
starting from the moment
the last command received by Replay has been completely performed.
10.5 How to read the figures of the dedicated protocols
When the master reads the data from Replay.
(Replay > Master)
a)
The data areas A and C indicate the transmission of data from the master to Replay.
b)
The data area B indicates the transmission of data from Replay to the master.
c)
The programme of the Master is structured so as to manage the data in the manner
shown on the figure from left to right. Therefore, the data management sequence is A , B ,
C .
Example :
In area A, the character ENQ (05
H
) is transmitted, followed by all the other data
indicated as "
Data
" in the figure to the right of the character ENQ .
10.6 When the Master delivers a command to Replay
(Master > Replay)
E
N
Q
Dati
S
T
X
Dati
A
C
K
Dati
Master
Replay
A
C
B
E
N
Q
Dati
A
C
K
Dati
Master
Replay
A
B