Product Introduction

Model Explanation

• 07: Procontic 90/AC31/T200 series

• SK: Serial Communication / Programming Interface

• 90: Hardware form factor & feature set

• R1: Revision 1 (hardware/firmware version)

Technical Parameters

• Model: 07SK90R1

• Function: PLC programming & RS‑485 Modbus RTU communication

• Interfaces:

  • PLC side: Proprietary backplane/connector for AC31/T200

  • PC side: RS‑232/RS‑485 (9‑pin D‑sub)

• Protocol: Modbus RTU (slave/master configurable)

• Baud rate: 1200–115.2 kbps

• Power: 24 V DC (from PLC or external), ≤100 mA

• Operating temp: -20°C to +60°C

• Storage temp: -40°C to +85°C

• Humidity: 5%–95% RH, non‑condensing

• Dimensions: 254 mm × 51 mm × 152 mm

• Weight: ~0.35 kg

• Certifications: CE, RoHS, UL/CSA

Interface & Communication

• PLC connection: Direct plug‑in to AC31/T200/AC800 backplane or dedicated port

• Host connection: RS‑232/RS‑485 D‑sub 9‑pin; optional RJ‑45 for Ethernet (variant)

• Modbus RTU: Supports 1‑to‑many networking (up to 31 slaves)

• LED indicators: Power, Tx/Rx, communication status

• Isolation: 2.5 kV isolation between PLC and serial ports

• Hot‑swap: Supported (no system downtime)

Core Functions

• Programming: Upload/download user programs, firmware updates for AC31/T200/AC800

• Online monitoring: Real‑time data view, force I/O, diagnostics

• Modbus communication: Link PLCs to HMI, SCADA, or third‑party devices

• Data logging: Capture process data via serial link

• Troubleshooting: Diagnose communication errors and PLC status

Application Scenarios

• Programming & maintenance: On‑site or remote PLC programming/debugging

• System integration: Connect legacy AC31/T200 to modern Modbus networks

• Factory automation: Automotive, packaging, assembly lines

• Process industries: Water treatment, chemical, food & beverage

• Retrofits: Upgrade old ABB PLCs with modern communication

Maintenance

• Installation: Securely plug into PLC port; tighten connectors

• Environment: Keep dry, ventilated; avoid dust/corrosion

• Inspection: Annually check connections, LEDs, and cable integrity

• Cable: Use shielded RS‑232/RS‑485 cables (max 1200 m at low baud)

• Backup: Regularly back up PLC programs via this module