What data types does SCADAPack ladder support?

Boolean for digital I/O and coils, 16-bit and 32-bit integer for data registers, and 32-bit floating point (REAL) for analog values and calculations.

Can ladder logic access DNP3 data directly?

Yes. DNP3 data objects map to SCADAPack register addresses that ladder logic can read and write directly.

SCADAPack Ladder Logic Programming in Telepace Studio

Quick Answer

Ladder logic is the primary programming language for SCADAPack RTUs. Telepace Studio provides contacts, coils, timers, counters, comparison, and math instructions operating on SCADAPack digital I/O, analog I/O, internal coils, and data registers.

Memory Types

DI — Digital inputs (field wiring)
DO — Digital outputs (relay/transistor)
AI — Analog inputs (4-20mA, 0-10V)
AO — Analog outputs
Internal coils — Internal memory bits
Data registers — 16/32-bit integer and floating-point storage

Core Instructions

NO/NC contacts, output coils, set/reset (latch/unlatch)
TON, TOF, RTO timers
CTU, CTD counters with reset
EQU, NEQ, GRT, LES, GEQ, LEQ comparisons
ADD, SUB, MUL, DIV, MOVE math and data operations

Example: Wellsite Pump Control

Rung 0: [NO Start_PB] --+-- [Coil Pump_Run]
                         |
        [NO Pump_Run] --+
        [NC Stop_PB] --------
        [NC HighLevel] ------
Rung 1: [NO Pump_Run] ---- [TON RunHours PRE:3600000]
Rung 2: [NO RunHours.DN] -- [ADD RunHoursTotal + 1 → RunHoursTotal]
                             [RES RunHours]

Frequently Asked Questions