Panasonic minas a4 series Instruction Manual page 290

Communication
• RS485 Communication
Module identification byte
of transmitter is the module
ID | 80h of the counterpart.
ID reception of other than
opponent and at slave
Enquiry for
Return ENQ to reception
transmission,
buffer
and retry times
(receipt processing)
are within setup
Module
recognition byte,
Enquiry for transmission,
Transmission
but retry times are over.
of ENQ T2 start
Reset of retry times
Clear of transmission
enquiry
Idling =
It waits for the reception of Module ID, and or it is dealing with reception.
Reception of
module
recognition
bytes
T1 start
Ready for ENQ or EOT
Reception of
of EOT
T2 start
Ready for command byte counts
Module recognition byte is
module ID and reception of ENQ
Module recognition byte,
Transmission of ENQ, T2 start
288
Transmitter
Module ID of opponent
T1 start
Ready for ID
T1 time out
One count of
retry times
T1 stop
Clearance of
transmission
buffering
Success of reception
T1 time out
(Check sum OK'ed and
T1 stop
module recognition
byte is module ID,
when size becomes o.)
Transmission of ACK,
T1 stop
Module
identification byte
is not module ID
and ENQ
reception or
T1 timeout
T1 stop in
Reception of command byte counts
Size command byte counts + 3
Sum command byte counts
T1 start, T2 stop
Reception of EOT
Size Command bytes +3
T2 stop
Ready for EOT
T2 time out
One count of
retry times
T2 stop
Clearance of
transmission
buffering
Reception of
T2 time out
Count once of
retry times
T2 stop
Clearance of
transmission buffer
T2 time out
Transmission of NAK
when module
identification byte
is module ID, and
T2 stop in other case
Reception of remained block
Reception of one character
Size Size - 1
Sum Sum + received character
T1 start
Receiver
Transmission of
one character
Size Size - 1
Block transmission
Size becomes 0
T2 START
Ready for ACK/NAK
Reception of ACK
ACK or
Reset of retry times
T2 stop
Clearance of
transmission enquiry
T1 time out
Transmission of NAK and
T1 stop when module
recognition byte is
module ID.
T1 stop in other case
than the above.
Transmission to other
axis (module recognition
byte is not module ID
when size becomes 0)
T1 stop
Failure of reception.
(Check sum error when
size becomes o.)
T1 start
Ready for finish of receiving data
T1 time out
Transmission
of NAK,
T1 stop
Reception of
one character
T1 start