ICP DAS USA I-7521 User Manual page 99

5.3.23 ~**
For: I-7521/I-7522/I-7522A/I-7523/I-7524/I-7527
 Description:
The Host computer sends this command to tell all modules that the "Host is OK".
The host watchdog timer is reset and restarted.
 Syntax:
~**[chk](CrLf)
~ Delimiter character
2-character checksum. If the checksum is disabled  no [chk]
[chk]
(CrLf) End Character
 Response: no response
 Example:
command: ~**(CrLf)
response: No Response
I-7521/I-7522/I-7522A/I-7523/I-7524/I-7527 User's Manual,Ver2.5 Aug.2015
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