EandM is an authorized Siemens industrial automation distributor serving manufacturers, system integrators, and industrial facilities across the West Coast—California, Oregon, and Washington—including full support for SIMATIC PLCs, SINAMICS drives, and SIMATIC RFID systems.
If you run a production or distribution line and you're still relying on manual scans, barcodes, or spot-check processes to track what's moving through, there's a better way.
This is one of the most common conversations we have with plant managers who come to us looking to eliminate tracking bottlenecks. Below is a quick breakdown of how industrial RFID works, how the pre-engineered Siemens CB Gate puts it to work, and how to select the right configuration for your plant floor.
First: What Is RFID?
RFID stands for Radio Frequency Identification. A small tag—essentially a durable label embedded with a miniature chip and antenna—is attached to a product, pallet, tool, or industrial container. An optical or proximity sensor detects an oncoming asset, the reader fires a localized radio frequency wave, the tag responds with its programmed dataset, and your control system logs it instantly. No line-of-sight scanning or manual barcode gunning required.
The Ultra-High Frequency (UHF) spectrum utilized by the SIMATIC CB Gate can parse multiple target tags simultaneously at multi-meter ranges, even while assets move at full production speeds. This makes it ideal for sorting, pallet validation, tool tracking, and tire identification arrays.
The Pre-Engineered Solution: SIMATIC Ident CB Gate
The CB Gate is a ready-to-deploy RFID portal built specifically for integrated conveyor structures. Instead of sourcing separate layout frameworks, UHF readers, shielded antennas, electrical enclosures, and custom logic blocks, everything drops under a single factory part number. It ships pre-mounted with the frame assembly, power rails, control box, and core visualization software ready to bolt down.
How the Pass-Through Read Cycle Works
1. Material Entry
A built-in light barrier triggers the read loop automatically as soon as the package breaks the beam.
2. Dynamic Capture
High-gain RF650A antennas sweep the zone, parsing tag metrics on objects moving up to 1.3 m/s.
3. Data Transmission
Data displays on the HMI and streams directly to your PLC, MES, or ERP via S7 or TCP/IP over Ethernet.
4. Pre-Loaded Blocks
No low-level programming needed; standard TIA Portal function blocks handle hardware configurations out of the box.
Three System Configurations to Choose From
All structural options share standard frame dimensions (1.55–1.95 × 2 × 1.2 m, weighing approximately 53 kg) and ship complete with integrated industrial breakers, safety fuses, and light curtains. Models are available in specialized ETSI, FCC, and CMIIT wireless regulatory profiles.
CB 2H Gate
2 Antennas • Top-Oriented • Includes HMI
Engineered for processes where tags consistently face upward on the belt line. Monitors the tracking zone directly from above using twin RF650A antennas.
CB 4 Gate
4 Antennas • Top + Bottom • No HMI
Provides comprehensive top and bottom field coverage. Stripped of a local physical screen to integrate directly into active master SCADA/HMI operator systems. (ETSI profile only).
CB 4H Gate
4 Antennas • Top + Bottom • Includes HMI
The ultimate solution for lines with random, mixed, or uncontrolled tag placements. Full multi-directional antenna coverage ensures zero missed reads.
Specialized Industry Variant: A fourth system, the CB 4H Gate for Tire, optimizes the 4-antenna configuration with proprietary algorithms tailored for rubber processing. It isolates tire placements and identifies whether a vulcanized tag element sits on the top or bottom wall dynamically.
What's Inside the Box (Bill of Materials)
| Core Component Component |
Siemens Hardware Module Model |
Siemens Part Number |
| Central Processor (CPU) | SIMATIC S7-1212C Compact PLC | 6ES7212-1AE40-0XB0 |
| UHF RFID Reader | SIMATIC RF680R Premium Reader | 6GT2811-6AA10-0AA0 |
| Industrial Switch | SCALANCE XB005 Unmanaged Ethernet Switch | 6GK5005-0BA00-1AB2 |
| Power Supply | SITOP PSU6200 Stabilized Power Supply | 6EP3334-7SB00-3AX0 |
| Field Antennas | SIMATIC RF650A Circular Polarized (2 or 4) | 6GT2812-0GB08 |
| Control Panel Layout* | SIMATIC HMI TP900 Comfort Touch Panel | 6AV2124-0JC01-0AX01 |
*Note: HMI panel assembly is included on all operational configurations except the stripped-down, SCADA-integrated CB 4 Gate version.
Key Technical Specifications
The gate hardware handles tags compliant with ISO 18000-62, ISO 18000-63, and EPCglobal UHF Class 1 Gen 2 specifications. The frame assembly is rated for ambient floor operation between 0°C and +45°C and connects to basic single-phase power distribution loops running 120V to 264V AC.
Furthermore, internal software stacks take advantage of Siemens' proprietary UHF-for-Industry filtering logic. This limits reader sensitivity strictly to the inside of the tracking frame, preventing false tag queries on parallel lines or background transit stock—even in heavy steel or metallic manufacturing layouts.
Frequently Asked Questions
Do my products already need RFID tags, or does the CB Gate apply them?
The CB Gate serves strictly as a reading and parsing tracking station; it does not print or apply labels. Your boxes, carriers, or pallets must have active UHF transponders installed to interact with the gate antennas.
What happens if two objects pass through the frame simultaneously?
The portal logic is tuned to isolate one tracked element at a time. Conveyor tracks require a minimal separation gap to allow the PLC to finalize database handoffs before the next beam break. Bunched or overlapping assets will trip a sync error alert flag to the master system.
Can it read tags regardless of which way the asset is flipped?
This maps back to your variant choice. Top-only antennas (CB 2H) need items oriented tag-up. If your product positioning on the conveyor is completely random or uncontrolled, utilizing the 4-antenna arrays (CB 4 / CB 4H) completely mitigates orientation errors.
Does the CB Gate plug directly into third-party PLC or MES architectures?
Yes. Because the core system communicates using standard S7 protocols alongside raw TCP/IP over industrial Ethernet ports, data dumps easily into standard warehouse management systems (WMS), ERP databases, or corporate SCADA layers.
Partner with a Siemens Platinum Distribution Team
EandM stands as a verified Platinum-tier partner—the highest operational distinction Siemens awards its technical channels. Our on-staff application specialists work hands-on with these controller networks daily. We offer certified TIA Portal training workshops, engineering layout validation, and free local phone/field support across your West Coast facilities.