Panasonic MINAS A5-series Operating Instructions Manual page 332

4. Communication
Specifications
Status Transition Chart
• RS232 Communication
Enquiry for
transmission, and
retry times are
within setup
Transmission of
ENQT2 start
Idling =
It waits for the reception of ENQ, and or it is dealing with reception.
T2 time out
ENQ
Transmission of NAK,
Transmission T2 stop
of EOT
T2 start
Ready for command byte counts
7-36
Ready for EOT
Reception of ENQ and
at slave
Return ENQ to reception
buffer(reception processing)
Enquiry for transmission, but
retry times are over.
Reset of retry times
Clear of transmission enquiry
T1 time out
Transmission of NAK,
T1 stop
Success of reception
(Check sum OK'ed when
size becomes o.)
Transmission of ACK,
T1 stop
Reception of command byte counts
Size command byte counts + 3
Sum command byte counts
T1 start, T2 stop
Transmitter
Reception of EOT
Size Command bytes+3
T2 stop
T2 time out
One count of retry times
T2 stop Clear of
transmission buffer
Reception of other than
ACK orT2 time out
Count once of retry times
T2 stop
Clearance of transmission
buffer
Failure of reception.
(Check sum OK'ed when
size becomes o.)
Transmission of ACK,
T1 stop
Reception of remained block
Reception of one character
Size Size –1
Sum Sum + received character
Receiver T1 start
Transmission of
one character
Size Command bytes–1
Block transmission
Size becomes 0
T2 START
Ready for ACK/NAK
Reception of ACK
Reset of retry times
T2 stop
Clear of transmission
enquiry
T1 time out
Transmission
of NAK,
T1 stop
Ready for finish of receiving data
Reception of
one character
T1 start