Omron CPM1

363
Command and Response Formats Section 6-2
sion is split, the ends of the first and intermediate frames are marked by a
delimiter instead of a terminator.
Dividing Commands (Host Computer to PC)
As each frame is transmitted by the host computer, the computer waits for the
delimiter to be transmitted from the PC. After the delimiter has been transmit-
ted, the next frame will then be sent. This procedure is repeated until the
entire command has been transmitted.
Dividing Responses (PC to Host Computer)
As each frame is received by the host computer, a delimiter is transmitted to
the PC. After the delimiter has been transmitted, the PC will transmit the next
frame. This procedure is repeated until the entire response has been transmit-
ted.
Delimiter
Tex t
Unit no.
Header code
FCS
Delimiter
Frame1 (command)
Tex t
FCS
Delimiter
Terminator
FCS
Tex t
End code
Header code
Unit no.
Frame2 (command)
Frame
(response)
Delimiter
Tex t
FCS
Terminator
Frame3 (command)
Host
computer
PC
Delimiter
Tex t
Unit no.
Header code
FCS
Terminator
Frame (command)
Host
computer
PC
Delimiter
FCS
Tex t
End code
Header code
Unit no.
Frame1 (response)
Tex t
FCS
Delimiter
Frame2 (response)
Delimiter
Tex t
FCS
Terminator
Frame3 (response)