User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
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8
3. Ladder Logic Examples
Logic Limitations
PID, Clock Synchronization, Report Printer and
indirect addressing in function blocks are not supported
by an LP-2/3.
Registers #R1921 to #R2048 should be kept free to allow
the use of firmware diagnostics.
The logic shown configures digital input 8 to
be a digital output and configures analog
input 1 for live zero 1-5 V (or 4-20 mA).
Setting Hardware Options Using Ladder Logic
After a cold start or firmware download, hardware options
are reset to their default state so it is advisable to
configure any custom settings in ladder logic.
The hardware options that can be set are listed in the
topic LP-2/3 Registers, Hardware Setup Registers
Output voltages 5V Out, V1 Out and 24V Out can be
individually controlled using ladder logic.
High Speed Pulse Output (Digital Output 3)
Digital output 3 (when enabled) can be configured as a
high speed pulse output (500 Hz maximum - depends on
pulse settings)
The number of pulses to output is configured in #AO5.5
Pulse ON time (x1 ms) is configured in #AO5.6
Pulse OFF time (x1 ms) is configured in #AO5.7
The value in #AO5.5 is decremented by the RTU as each
pulse is outputted