SIEMENS

Main Functions

High‑speed NC‑PLC data exchange: Acts as hardware bridge for bidirectional real‑time data transmission between NC numerical control channel and onboard PLC unit. Transfers part‑program status, axis‑motion signals, machine‑logic interlock signals, M‑code / T‑code commands between NC and PLC subsystems.More products: www.plcva.com
Signal handshake & logic coordination: Implements hardware‑level signal handshaking, synchronizes CNC motion commands with PLC machine‑logic processing; guarantees correct execution of auxiliary functions such as tool change, spindle control and coolant switch.
Internal bus signal conditioning: Conditions and buffers parallel bus signals inside the SINUMERIK‑3 backplane rack; suppresses crosstalk interference inside the cabinet to ensure stable data interaction.
Channel‑based status monitoring: Tracks communication handshake status between NC and PLC; detects internal bus communication failures. Fault status can be fed to system diagnosis display for maintenance troubleshooting.plcva.com
Rack‑mount plug‑in structure: Installs in standard SINUMERIK‑3 system rack; adopts backplane bus connection mode, easy‑to‑replace board‑level spare part for legacy CNC equipment.
Industrial anti‑interference design: Optimized PCB layout adapts to strong‑interference workshop cabinet environment for machine‑tool control cabinets.plcva.com

Siemens 6FX1122‑1AA01

Compatible control system: Siemens SINUMERIK 3 vintage CNC numerical control system.
Target equipment: Old‑generation CNC lathes, milling machines, machining centers and special‑purpose machine tools equipped with SINUMERIK‑3 control hardware.
Industry sectors: Machinery manufacturing, automobile component processing, mold‑making workshops and other factories with preserved legacy CNC production equipment.
Purpose: Realize reliable data interaction between numerical control unit and PLC logic unit; support normal execution of machining programs, auxiliary functions and machine‑tool interlock logic. It is an essential discontinued spare part for maintaining existing SINUMERIK‑3 machine‑tools, prevents production halt caused by coupling‑board failure.plcva.com