PLC/SCADA Software Engineer
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AI Summary
Develop, modify, and maintain industrial automation software using Siemens TIA Portal and S7 PLC platforms. Provide remote engineering support for commissioning, troubleshooting, and Factory Acceptance Testing.
Purpose
The position is
responsible for developing, modifying, testing, and maintaining industrial
automation software using Siemens technologies. The role is primarily focused on software development and remote engineering support using Siemens TIA Portal
V21, Siemens S7 PLCs and WinCC SCADA/HMI platforms. This position does not
include electrical design, panel design or site installation responsibilities.
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.
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