IDEC WindO/I-NV4, User Manual

Page: 187 / 1738

WindO/I-NV4 User’s Manual
3-79
5 User Communication
3
Co
m
m
un
ica
tio
n
Not set Set
Set
Not set
Reception is started from the beginning and terminated with the terminal code.
Not set Not set
Set
Reception is started from the beginning and the data is received according to the
maximum command length.
Reception is terminated when the Receiving Character Time Out occurs.
Not set
Reception is started from the beginning and terminated when the data is received
according to the length of the command.
Start code Terminal
code
Variable Description of the procedure for terminal of data reception
<[LDR0100] N 2 2 U>
Receive data:
<<1:”AB” 2:”CD” [LDR0200]>>
Registering
Constant (Hexadecimal) Device Address
'34' '35' '0d'
Constant
(Hexadecimal)
Receive
Command settings:
Start code: None Terminal code 0dh
Skip(2) <[LDR0100] N 2V 2 U>
Receive data:
Skip
“123”
Device Address With Variable
Maximum command length
Receive
Command settings:
Constant
(Character)
Start code: None Terminal code: None
Skip(2) <[LDR0100] N 2V 2 U>
Receive data:
Skip
“123”
Constant
(Character) Device Address With Variable
Receive
Command settings:
Start code: None Terminal code: None
Receiving character time out occurs.
<[LDR0100] N 2 2 U>
Receive data:
<<1:”AB” 2:”CD” [LDR0200]>>
Registering Constant (Hexadecimal) Device Address Without Variable
Command length
Receive
BCC(1 0 XOR N 1)
BCC Command settings:
Start code: None Terminal code: None
• When trigger conditions are satisfied for two or more receive commands for which both start code and
terminal code are set, all commands are analyzed and processed for receive processing. Since
commands with and without errors may be mixed depending on the results of data reception analysis of
each command, take extra caution regarding error handling.
• While the trigger condition is satisfied for a receive command for which either a start code or terminal
code is not set, only this command is processed for data reception when the trigger condition of another
command is being satisfied. When two or more commands exist for which either start code or terminal
code is not set, the command with the biggest number for managing the protocol is processed.
• When a start code of the receive command for which a start code is set cannot be received, all of the
receive data is ignored and abandoned. No error occurs.
• When start code is received with a receive command for which start code and terminal code are set, the
data reception is completed after the maximum number of bytes received in case of continuous
reception of data that does not match the terminal code of all receive command in which the trigger
conditions is satisfied.