PLC/SCADA Software Engineer

Purpose

Work Overview

• Develop PLC application software using Siemens TIA Portal
  V21.
  
• Develop and maintain Siemens S7-1200 and S7-1500 PLC
  programs.
  
• Develop, configure and modify WinCC HMI/SCADA applications.
  
• Review Functional Design Specifications (FDS), Sequence of
  Operations (SOO), Cause & Effect matrices and I/O schedules before
  development.
  
• Develop modular, reusable and well-documented PLC software.
  
• Perform offline software testing using PLCSIM where
  applicable.
  
• Support Factory Acceptance Testing (FAT) remotely.
  
• Provide remote software support during commissioning and
  troubleshooting.
  
• Maintain software version control, backups and revision
  history.
  
• Prepare software documentation, testing records and change
  logs.
  
• Collaborate with project managers, controls engineers and
  commissioning teams.
  
• Ability to read and interpret electrical schematics, control
  panel drawings, wiring diagrams, P&IDs and I/O schedules.
  
• Sound understanding of industrial electrical control systems,
  including AC/DC circuits, relays, contactors, motor starters (DOL/reversing), analogue/digital I/O, protection devices, residual current protection
  (RCD/RCCB), and fail-safe control principles.
  
• Working
  knowledge of electrical fault-finding, circuit theory, and industrial
  troubleshooting techniques to support PLC software development, testing and
  commissioning.
  

Requirements

Qualifications and Education Requirement

• Bachelor's Degree in
  Electrical, Electronics, Mechatronics, Computer or Instrumentation Engineering,
  or equivalent.
  
• Minimum 3 years' experience
  developing Siemens PLC and SCADA software.
  
• Technical Skills (Mandatory)
  

• Siemens TIA Portal V21
  
• STEP 7 Professional
  
• Siemens S7-1200 and S7-1500 PLCs
  
• WinCC Professional and/or WinCC Unified
  
• Ladder Logic (LAD)
  
• Function Block Diagram (FBD)
  
• Structured Control Language (SCL)
  
• Profinet
  
• Modbus TCP
  
• PLC diagnostics and troubleshooting
  

• Preferable
  

• BACnet/IP
  
• OPC UA
  
• Siemens ET200 Remote I/O
  
• SINAMICS StartDrive
  
• Building Management Systems
  (BMS)
  
• HVAC
  automation experience
  

• Experience supporting FAT and
  remote commissioning.
  
• Experience interpreting
  electrical drawings and troubleshooting industrial control systems in
  collaboration with electrical and commissioning engineers.
  
• Strong written and verbal
  English communication skills.