3.6 Setting the Configuration Chapter 3: Configuration
120 493-0736-11 (6-2)
ESPEnable *
The ESPEnable input to the block enables switching between ESP and ISP and
can be connected to any digital source. Whenever the ESPEnable input is
connected to a source switching between ESP and ISP can be made either from
the front panel of the controller or by using the ESPEnable input.
Note: If the ESPEnable input is set to Off, switching between ESP and ISP can
only be made from the front panel. Refer to the Operator’s Manual, section 4.5.
ESPEnable and the front switch affect ESPMode as shown in the diagram below.
Figure 46 ISP/ESP Switching.
SPValue *
The SPValue output from the block is the Set Point used by the Control block. The
Control Block has a fixed connection to the Set Point output, but other blocks are
also allowed to connect to this output.
SPLimitMode *
The parameter SPLimit Mode allows you to specify a limitation which ensures
that the Set Point lies within an acceptable range, defined by setting upper and
lower limits via the parameters SPLoLimit and SPHiLimit.
ESPEnable Input
ISP/ESPSwitch
ESPMode Output
False
Change
True
ESP
ISP
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