With over 20 years of industrial automation experience, our Principal and Senior Control Systems Engineers deliver globally trusted solutions for Modbus TCP integration. We specialize in architecting robust communication systems for Siemens PLCs (S7-300/400/1500), CP443-1 modules, and multi-vendor slave devices. Our methodology combines deep protocol mastery with real-world deployment insights to eliminate downtime, optimize throughput, and future-proof your infrastructure.

Core Service Offerings

1. Modbus TCP Design & Development

Custom Master/Slave Implementation:
- Siemens PLC logic for MB_CLIENT/MB_SERVER or raw TSEND/TRCV frameworks.
- Multi-slave architectures (50+ devices) with burst polling, connection pooling, and asynchronous state machines.
Legacy Integration:
- RTU-to-TCP gateways (Prosoft, HMS Anybus).
- Endianness conversion, register mapping, and data scaling.

2. Performance Optimization

Efficiency Upgrades:
- Reduce scan cycles by 40% via optimized frame batching and slave grouping.
- TCP connection management (keep-alive tuning, error backoff logic).
High-Availability Systems:
- S7-400H redundancy with S7-RedConnect (seamless failover <1 sec).
- Load-balanced CP443-1 configurations.

3. Validation & Troubleshooting

Layer 4/Layer 7 Diagnostics:
- Port 502 accessibility, firewall, and routing audits.
- MBAP/PDU frame validation (Wireshark, Modbus Poll).
Stress Testing:
- Simulate 100+ slaves to validate throughput and CPU limits.

4. Security Hardening

VLAN segmentation, PLC firewall rules, and VPN tunneling for MODBUS TCP.

Project Scope & Investment

Service Tier	Scope	Duration	Investment
Small-Scale	1 Master (PLC) + ≤5 Slaves Design, dev, testing, documentation	40 billable hours	$10,000
Enterprise	Redundant Masters + ≥50 Slaves Performance tuning, HA, security	Custom quote	$250/hour

All projects include:

STEP 7/TIA Portal source code.
Validation reports (I/O mapping, response time metrics).
90 days post-deployment support.

Why Partner With Us?

Protocol Mastery: From MBAP/PDU syntax to RFC 1006 framing – no edge case overlooked.
Siemens-Certified: Expertise in CP443-1, S7-400H, and TIA Portal ecosystems.
Efficiency Focus: We design systems that handle 10,000+ registers at <50 ms scan cycles.
Global Impact: Deployed solutions in power plants, manufacturing lines, and water treatment facilities across 12 countries.

“We don’t just implement Modbus – we engineer resilience.”

Get Started

📞 Contact: +61 469 756 497

Let’s transform your Modbus TCP challenges into competitive advantages.