![background image](http://html.mh-extra.com/html/omron/z550/z550_operation-manual_1633335214.webp)
212
S
E
CT
IO
N 6
RS-2
32
C
Z550
Operation Manual
SECTION 6
Communication with External Devices
Flow of XMODEM Communication
Instruct to
start measurement
CAPTURE command
Send "READY"
128 bytes of data
(BK No. 1)
Start response
to the request
(send BK No. 1)
Measurement
XMODEM switch
(Send BK No. 2)
(Send BK No. 24)
Transmission of
all data completed
Measurement
completed
XMODEM switch
reception request
Normal reception
of data
Normal reception
of data
XMODEM abort
NAK(a)
ACK
ACK
ACK
ACK
128 bytes of data
(BK No. 2)
128 bytes of data
(BK No. 24)
EOT
OK
No response when
"C" is sent
1 packet =
128/1024 bytes
(CRC check
performed)
*1 In the case of 1024 lines, for each line represented by three bytes of data, the measurement data is
sent as 25 packets (1024 lines x 24 bits / 128 bytes = 24, plus 1 header packet = 25).
*2 The flow will be the same when profile data is output via XMODEM transmission in the case of the
TRG terminal block.
Return "NAK" if
data reception
is abnormal.
Send the same
BK No. again when
"NAK" is received.
Host device
*1
*2
Packet 1
Packet 2
Packet 25
Dummy data (00h)
Data of 1 to 1024 lines (3 bytes x 1024)
Header area
䊶䊶䊶
Packet division
128byte
128byte
128byte
operation.book Page 212 Monday, June 6, 2005 10:19 AM