Chapter Eight: Valve Failsafe Battery Back-up
Option
O
eration
107
Remote RS-232 Operation
The command [
K
value
] defines the direction of valve control upon power failure, where:
value
: 0 = disable option
1 = open valve at power failure
2 = close valve at power failure
To check the type of valve battery back-up control, issue the request:
R 40
The controller responds with the message [
K
value
], where:
value
: 0 = option disabled
1 = valve opens at power failure
2 = valve closes at power failure
An example response, if the valve is set to open upon a power failure, is:
K
1
To change the valve control so that it closes upon a power failure, enter:
K
2
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