Specifications

8 – Configuring Points
154 R400
Control Level
The control level provides an additional form of security on individual points. For
each point, you can specify a control level between 0 and 255. At Stations using
operator-based security, operators can only control a point if they are defined
with a control level equal to or higher than its control level. (See “Configuring
Security and Access” on page 209 for information about operator-based security.)
Reverse Output
Reverse output is a control option that you can specify if you want the output of
a status or analog point to be reversed. For example, a digital output may have
been wired such that the field device is off when the actual controller output is
on.
For analog output signals, this option is needed when the device to be controlled
“closes” on a low (0%) signal and “opens” on a high (100%) signal.
Selecting this option reverses both the output and the input. For example, if a
value of 20% was read from the field, the value would be displayed as 80%; if a
value of 20% was entered by the operator, the output would be converted to 80%.
Note Some controller interfaces do not support reverse output.
plscpcg.book Page 154 Monday, May 28, 2001 10:11 AM