Omron ZFV-C Command Reference Manual page 13

Data transmission to ZFV-C from personal computer
(issue of SYSLOAD command)
Host device (personal
computer)
Switch XMODEM
Switch XMODEM
Start of reply to the request
(BK No. 1 sent)
* No reply when "C" is being sent
(BK No. 2 sent)
(BK No. * sent)
All data has been completely sent.
Completed
BANKLOAD/SYSLOAD command
"READY" reply
NAK (a)
128-byte data (BK No. 1)
ACK
128-byte data (BK No. 2)
ACK
128-byte data (BK No. *)
ACK
EOT
ACK
OK
Non-procedural Communication Command Reference
Acquiring/Sending Data
ZFV-C
Receive request
* 1 packet = 128 bytes
(check by CRC)
Data is successfully received.
* Returns "NAK" if data receive
error has occurred.
Data is successfully received.
Data is successfully received.
XMODEM abort
ZFV-C
11