common - Sanyo Denki America, Inc.

5. Type R Interface
5.8.5 Communication Method, Timing Chart
1Communication Method (Normal Operation)
Command issue
Status response
Time until the slave sends the status response after receiving the command: MinimumT1/
MaximumT2
Time until the master is able to issue commands after receiving the status: Minimum of 1ms
1 The master sends all commands with an address attached to the header (Packet length).
2 Slave devices can only transmit immediately after receiving a command with their own
address.
3 Slave devices send the status response with their address attached to the header.
4 After receiving the command, the slave device must start responding after [T1] but before [T2]
is over.
5 After the master receives the response from the slave, it can issue the next command after
[T1] has passed.
6 If there is no response from the slave after [T3], it will be considered a time-out error, and the
master can issue the next command. (It is possible to re-issue the command.)
7 If the slave doesn’t complete receiving the data until [T3] is over, it discards the data received,
and interprets the next data as a header (packet length).
8 If there is a communication error, the master stops issuing commands after [T3] and clears
the receive buffer of the slave device.
9 If there is a communication error, the slave discards the data received, and does not send a
response. A communication error is shown by opening the line longer than [T3].
10 If the slave receives a command that is not a pre-set command, it returns the command
error status.
Note 1: During control power connection / cutoff, when the CPU is not working due to unstable
control power, the amplifier may output some arbitrary data, which should be ignored by the user.
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