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Pressure Systems, Inc. 98RK-1 & 9816 User’s Manual©
Page 42 www.PressureSystems.com
POWER UP CLEAR (Command 'A')
Purpose: This command has no internal module affect. It is used as a simple
method to verify proper communications to the 9816 scanner.
Command
“A”
‘A’ is the command letter
Response
“A”
‘A’ is the acknowledge letter
Description: The Ethernet Model 9816 does not return a ‘Power-Up Clear Expected’ error (as
did early 901x modules without Ethernet interface). This is due to the reset
notification mechanisms that are part of the TCP/IP protocol. It is generally used
as a simple ‘NOP’ mechanism to verify proper communications with a module.
Example:
● Send TCP/IP command to Model 9816 module
(via its open socket) to acknowledge
module power on:
"A"
Read following response:
"A"