Product Core Brief
- Model: CM579-PNIO (Order Code 1SAP170901R0001)
- Brand: ABB
- Series: CM57x Fieldbus Expansion Modules for AC500 PLC Platform
- Core Function: Acts as PROFINET IO RT controller with embedded 2-port Ethernet switch to connect AC500 CPUs to distributed PNIO slave drives and I/O.
- Product Type: Slide-in PLC expansion communication module for TB56xx DIN rail terminal bases
- Key Specs: Dual RJ45 integrated switch | PROFINET IO RT + PROFIsafe support | Max 3072 byte cyclic I/O | Condition: New Original (New Surplus)
Product Introduction
ABB 1SAP170901R0001 delivers native real-time PROFINET master functionality for AC500 series PLCs, enabling daisy-chained PNIO device wiring without external network switches. It draws all operating power directly from the PLC backplane.This unit differs from CM572-DP Profibus hardware by full industrial Ethernet real-time processing; its internal two-port switch cuts auxiliary cabinet hardware count by 50 % for packaging and material handling machine layouts.
Key Technical Specifications
| Parameter | Value |
|---|---|
| OEM Order Number | 1SAP170901R0001 |
| Backplane Supply | 24 V DC (-15 % / +20 %), reverse polarity protected |
| Typical Backplane Current Draw | 85 mA |
| Max Power Dissipation | 2.0 W full cyclic I/O load |
| Ethernet Interfaces | Dual RJ45 (PNIO1 / PNIO2), integrated IEEE 802.3 2-port switch |
| Ethernet Speed | 100 Mbps full-duplex auto-negotiate (100 Base-TX) |
| Supported Protocols | PROFINET IO RT Class 1, PROFIsafe, DCP, LLDP, SNMP v1 |
| Max Cyclic Process I/O Data | 3072 bytes total input/output (FW ≥2.4.8) |
| Max Segment Cable Length | 100 m per RJ45 port with CAT5e shielded cable |
| Status Indicators | 5 front LEDs: PWR, RUN, RDY, STA1, STA2 |
| Compatible Terminal Bases | TB561, TB562, TB563; incompatible with TB5600 |
| Mechanical Dimensions | W28 mm × H135 mm × D62 mm |
| Unit Net Weight | 0.17 kg |
| Operating Ambient Temp | 0 °C to +60 °C continuous operation |
| Storage Temperature Range | -40 °C to +70 °C, 5–95 % RH non-condensing |
| Enclosure Protection Class | IP20 DIN rail cabinet mounting |
| Compatible AC500 CPUs | PM581, PM582, PM590, PM591, PM592 |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Cross-reference serial numbers and 1SAP170901R0001 part code against ABB spare databases; inspect dual RJ45 pin alignment and plastic housing for cracking. Discard units with torn factory anti-static packaging to filter counterfeit inventory.
- Live Functional Test: Mount the module on TB562 base paired with PM591 CPU and PROFINET slave simulator. Run continuous 24-hour cyclic I/O exchange, log backplane voltage every 15 minutes, and simulate Ethernet trunk disconnection to validate slave diagnostic flag reporting.
- Electrical Parameter Test: Use a 500 V Megger to measure isolation resistance between Ethernet circuits and PLC backplane logic; pass threshold set at 10 MΩ minimum. Verify reverse-polarity supply protection response with a Fluke 115 multimeter.
- Firmware Verification: Read and record factory communication firmware revision via Automation Builder software. Capture photos of dual RJ45 port labeling and base locking tabs for field commission reference.
- Final QC & Packaging: Fit plastic dust caps over both Ethernet ports. Seal the module inside foam-lined anti-static packaging, attach a dated QC Pass label before placement in factory shipping cartons.
Replacement Pitfall Guide
❗Firmware Mismatch: CPU firmware older than v2.4 lacks full 3072 byte I/O mapping and PROFIsafe stack support. Installing the module on outdated firmware truncates process data and triggers constant PNIO LINK FAULT alarms. Flash matching CPU firmware before rack insertion.❗DIP Switch / Jumper Misconfiguration: The two front rotary address switches are factory unused for standard PNIO operation. Manual adjustment disrupts DCP auto IP assignment and creates duplicate network node conflicts on plant subnets.❗Terminal / Cable Incompatibility: Unshielded CAT5 cabling picks up EMI near servo drive stacks. Only use shielded CAT5e Ethernet cable with single-point shield grounding at the cabinet DIN rail ground bar.❗Power Supply Mismatch: Calculate full backplane load with a minimum 20 % power headroom. Stacking four of the unit plus analog I/O modules overloads aged TB562 base power traces, triggering random PLC warm resets mid-production cycles.❗ESD Damage: Low-humidity machine shop floors generate static charge that burns the internal NETX100 Ethernet controller chip instantly. Lay an anti-static mat under the DIN rail, wear a grounded wrist strap, and touch bare cabinet chassis ground for three seconds before handling the module PCB side.Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
Compatibility Matrix
- -XC → 1SAP170901R0001 : Direct — identical PNIO firmware and pinout; XC variant only adds extended temperature conformal coating
- CM572-DP → 1SAP170901R0001 : Incompatible — Profibus RS485 hardware contains no Ethernet switch or PROFINET protocol stack
- CI867K01 → 1SAP170901R0001 : Incompatible — AC800M CEX Modbus TCP module has no physical fit to backplane
- Third-party PROFINET IO slave I/O → : Direct — standard GSDML file import via Automation Builder with zero hardware modifications
Benchmarks
- Bus scan cycle: 1 ms (simulated load, 16 PNIO servo slave stations at 100 Mbps)
- Comms throughput: 100 Mbps (PROFINET IO RT full-duplex maximum line rate)
- Fault detection latency: < 1.8 ms (Ethernet trunk break diagnostic flag to Automation Builder engineering HMI)
