OEMAX NX-SCU Serial Communication Unit
The OEMAX NX-SCU is a versatile serial communication module for the OEMAX NX Series PLC system. It provides two independent, galvanically isolated serial ports that can be individually configured as RS-232, RS-422, or RS-485. The module supports standard protocols such as Modbus RTU, Modbus ASCII (master/slave), and user-defined protocol macros, making it suitable for connecting the PLC to a wide range of serial devices, including HMIs, barcode readers, weigh scales, printers, and legacy instruments.
Technical Specifications
Product Type: Serial communication module
Number of Ports: 2 (independent, configurable)
Physical Interfaces: RS-232, RS-422, RS-485 (software selectable per port)
Isolation: Galvanic isolation between ports and system backplane (500 V AC)
Baud Rate: 300 bps to 115.2 kbps (software selectable)
Data Format: 7 or 8 data bits, 1 or 2 stop bits, parity none/even/odd
Supported Protocols: Modbus RTU (master/slave), Modbus ASCII (master/slave), no-protocol (user-defined), protocol macro
Communication Modes: Half-duplex, full-duplex (RS-232 only)
Transmission Distance: RS-232: 15 m, RS-422/485: up to 1200 m
Number of Nodes (RS-485): Up to 32 units
Power Supply: 24 V DC (from backplane)
Operating Temperature: 0°C to +55°C
Dimensions: Standard NX Series module width (approx. 25 mm)
Certifications: CE, UL
Flexible Protocol Support
The NX-SCU includes a powerful protocol macro function that allows users to create custom communication sequences for devices that do not use standard Modbus. This macro language supports send/receive data frames, checksum calculation, and conditional branching. The module can also operate in no-protocol mode, where the CPU directly controls the transmission and reception of raw data bytes, ideal for interfacing with printers, barcode scanners, or custom ASCII-based devices.
Easy Configuration and Diagnostics
Configuration is performed through the OEMAX PLC programming software, with intuitive wizards for setting communication parameters, Modbus slave addressing, and data mapping. The module includes front-panel LEDs for power, communication activity, and error status. Diagnostic functions include error counters, loopback tests, and real-time monitoring of sent/received frames. The isolation protects the PLC from ground loops and voltage spikes common in industrial serial networks.
Application Domains
The NX-SCU is ideal for connecting the PLC to Modbus RTU networks of drives, power meters, and sensors; linking to weigh scales, barcode readers, and RFID readers; communicating with printers and label makers; integrating with legacy serial instruments in retrofit projects; and implementing custom serial gateways or data concentrators.
- User name Member Level Quantity Specification Purchase Date
- Satisfaction ：
-
-
NI RIO Platform: Embedded Measurement and Control Solution Integrating Real time Processing and FPGA -
NI sbRIO-9612 Single Board Controller -
NI EPM high-performance DAQ cable -
NI SCXI-1349 Adapter Connection Guide -
NI SCXI Chassis Configuration and Installation Guide -
SNAP PAC System Architecture and Selection Guide -
PacSci Model 6410 Microstep Driver -
TI 11kW GaN three-phase ANPC inverter -
Pepperl+Fuchs K-System Isolation Barrier Complete Guide -
Pacific Scientific POWERMAX II stepper motor -
LINAK LA23 Compact Industrial Electric Push Rod -
Pacific Scientific Servo Drive Selection Guide -
Pacific Scientific SCE900 Servo Drive Complete Guide -
Pro face PFXSTM6400WAD human-machine interface -
Pacific Scientific 6410 Stepper Driver -
Parker EVM32-II Modular Expansion Base Plate -
Parker COMPAX series compact servo controller: integrated motion control and drive -
Parker Compumotor ZETA6000 Single Axis Drive Controller -
PI C-663.12 Mercury Step Motor Controller -
NetTest TUNICS series tunable external cavity laser -
Complete Guide to Inline Automation Terminal System -
Phoenix FL MC 1000 SC (ST) Fiber Optic Converter -
Phoenix ST series spring cage terminal block -
ROSS Pneumatic Valve Full Series -
BD SENSORS DMP 333 High Pressure Transmitter -
OE Max Controls NX70 series PLC -
SAIA PCD4.W500/W600 Intelligent Simulation Module -
Saia Burgess PCD4.U100 Migration Kit -
SAIA PCD1 Controller Full Series -
SAIA Burgess PCD2.H110 Counting and Measurement Module -
SAMSON Type 3434 Pneumatic Controller Module -
SanDisk iNAND Flash and microSD -
Optimus® Product Family of SAS SSDs -
SANMOTION PB servo stepper -
ADCA AVM/AVF234S electric actuator -
SBS Technologies VIPC616 Carrier Board -
SBS Technologies VIPC616 VME Carrier Board -
Greenspring P2 Video Graphics Controller -
ABB UniPack-S Steel Compact Substation -
Schaffner Ecosine ® Economy Line FS 42842 Compact Passive Harmonic Filter -
Schenck Process INTECONT Tersus Weighing Instrument -
ENTRELEC contactor relay -
Smiths Connectors MHD/MDD/MDP CONNECTOR SERIES PCB High Density Connectors -
SEW EURODRIVE DFP21B bus interface -
SEW-EURODRIVE MOVIDRIVE B Series Manual -
SEW Eurodrive R series parallel axis reduction motor -
SEW EURODRIVE DFY/DFS Synchronous Motor Guide -
SEW MOVITRAC 31C Installation and Debugging -
SEW EURODRIVE MOVIDYN communication interface -
SEW MOVIDRIVE UL compliant installation -
SEW MOVIDRIVE bus positioning -
SEW MOVIDYN ® Series servo controller -
SEW MOVIDRIVE MD60A Inverter Guide -
BTicino Megatiker M5 electronic circuit breaker -
BTicino Megatiker M4 Circuit Breaker -
BTicino Megatiker M3 160 Circuit Breaker -
BTICINO MEGATIKER Circuit Breaker Series -
Elmex Industrial Automation Control Products -
Danfoss VLT ® Series 3000 series adjustable frequency drive -
Rockwell Automation SLC 500 Series Programmable Logic Controller -
YOKOGAWA CENTUM CS 3000 Integrated Production Control System -
OMRON SYSMAC CS Series CS1G/H-CPU H Programmable Controller -
MEGGITT TQ TQ 422/432 Eddy Current Measurement System -
MEGGITT VM600 machinery protection system (MPS) -
IbaDeskline SAS Industrial Computer -
IbaDAQ-C independent data acquisition device -
IbaFOB io ExpressCard fiber optic interface card -
IbaPADU-S-IT-16 modular central unit -
YASKAWA ∑ - II Series SGMBH/SGDH AC Servo System -
IbaBM CAN CAN/CANopen bus sniffer -
IbaLink-SM-128V-i-2O VMEbus interface board -
GE Fanuc Series 90-30 PLC Hardware System -
Automation Direct GS2 Series Frequency Inverter Specifications and Selection -
OMRON SYSDRIVE 3G3MV Multi-functional Compact Frequency Inverter In-depth Technical Guide -
Danfoss VACON NXI High Power Frequency Inverter Operation Manual -
Saia PCD4.U100 Kit System Upgrade Guide -
Yaskawa Sigma II Series NS300 DeviceNet Application Module Deep Technical Guide -
OMRON SSS Software C-series PLC Operating Instructions -
Kollmorgen SERVOSTAR S Digital Servo Drive Guide: From Installation to Mastery -
Omron C200HX/HG/HE PLC Installation Guide -
SIEMENS SINAMICS S120 Servo Drive System Application Guide -
Emerson ControlWave Micro Hybrid Controller -
ABB 800xA with Advant Master integrated configuration -
OMRON FQM1 Motion Controller Instruction System -
Schneider Easergy P5 Communication Protocol Complete Guide -
ABB JOKAB SAFETY Pluto series safety PLC -
Lenze HMI EL 100: Intelligent Human Machine Interface -
Pilz PSEN opII4H Safety Light Curtain Complete Guide -
Danfoss VACON ® NXP and VACON ® NXC series AC frequency converter -
EATON Crane Control System Complete Guide -
ProSoft MVI56-PDPMV1: ProFIBUS DPV1 Master Module Complete Guide -
DEIF XDi series FLEXIBLE DISPLAY INDICATORS -
DEIF AGC 100 series generator set controller -
DEIF AGC-3 Automatic Generator Set Controller -
DEIF Multi line 2 Controller Installation Guide -
KONGSBERG AIS BS600 shipborne automatic identification system base station -
KONGSBERG HMS 300 Helicopter Deck Monitoring System -
Honeywell HPM Series Particulate Matter Sensors -
HONEYWELL Expert C300 Controller -
HONEYWELL HCiX series touch panel operation interface -
Honeywell T901Px1A Inert Gas Pressure & Temperature Transmitter for Liquid Cargo -
HONEYWELL Expert Series-C I/O Module -
HONEYWELL INTELLIKNIGHT®MODEL 5700 Addressable Fire Alarm Control Panel -
HONEYWELL Expert PKS C300 Controller -
HONEYWELL Experion Local Control Network -
HONEYWELL IRIS P522 Flame Monitoring System -
HONEYWELL 7800 series combustion controller -
HONEYWELL Sensepoint XCD Flammable, toxic and oxygen gas detector for industrial applications -
HONEYWELL Sensepoint XCD Gas Detector -
HONEYWELL Series 61 and Series 62 Modutrol IV™ Motors -
HONEYWELL M6161, M6181, M6184, M6191, M6194 models Modutrol IV ™ motor -
KONGSBERG C-series precision cutting system: versatile digital cutting solution -
KONGSBERG DPS i2 Inertial Navigation System: A New Benchmark for GNSS and INS Fusion Positioning -
KONGSBERG DPS 114 Durable and Reliable DGNSS (DGPS/DGGLONASS) Sensor -
KONGSBERG DZ-110/U transmitter safety barrier unit -
KONGSBERG DZ-120 Zener Safety Barrier Unit -
KONGSBERG MST 319/324/342 series mini SSBL responder -
BridgeMaster E 180 and 250 EPA (L) Series of Marine Radars -
KONGSBERG K-Chief 600 Control Room Panel (CRP) for Ship Automation System -
KONGSBERG K-Master Bridge Solution: Comprehensive Enhancement of Ship Operation Efficiency and Safety -
KONGSBERG SR/SV Steering Servo Maintenance Comprehensive Guide -
KONGSBERG GT300 pressure transmitter -
KONGSBERG's RMP420 Remote Multifunctional I/O Module -
KONGSBERG WCU LED Control Unit Application Guide -
KONGSBERG K-Nav Navigation Product Series -
KONGSBERG K-Chief Ship Automation System -
KONGSBERG RCU 500 Remote Controller -
Kongsberg ACC20 Engine Safety Unit: Redundant Guardian of Industrial Power
