GN-9251 – Network Adapter

Main features

– Various type of protocols (MODBUS TCP , EtherNet IP , PROFINET , EtherCAT , CC-Link IE , CC-Link IE Field Basic , DeviceNet , PROFIBUS , MODBUS RS485, CC-Link , CanOpen , BACnet ,MODBUS RTU)

– More than 90 different I/Os (Universal type of Digital Input module, 32 points slice I/O module, ERNI type connector input/output module)

– Space-saving, compact size & slice type for the module expansion

– Easy and convenient working environment for the operator when wiring and install



User Manual




Interface Specification, GN-9251 (BACnet/IP Network Adapter)
Adapter Type Slave node (BACnet/IP)
BACnet Device Profile BACnet Application Specific Controller (B-ASC)
Max. Supported Object Size 256 objects  (IO channels only)*
BACnet Protocol Version 1
BACnet Protocol Revision 12
Max. Expantsion Module 32 slots
Max Length Bus Line Up to 100m from Ethernet Hub/Switch with twisted CAT5 UTP/STP
Max. Nodes Limited by Ethernet Specification.
Baud Rate 10/100Mbps, Auto-negotiation, Full duplex
Interface Connector RJ-45 socket * 2pcs
IP-Address Setup Via DHCP/BOOTP or IOGuide(Crevis Software)
IP-Address Range ~ 253
IAP Mode Set dip sw to 254.

– IAP web-server IP:

– Using only Internet Explorer / recommended version 11

Serial Port RS232 for MODBUS/RTU, Touch Pannel or IOGuide
Serial Configuration (RS232) 1 Node, 115200 baud, 8 data bits, no parity, 1 stop bit (Fixed)
*Refer to ‘2.3. LED Indicator’
6 LEDs – Window Lable

MOD, LINK, ACTIVE, IOS, System Power, Field Power

2 LEDs – each RJ45 Connector

Yellow(Link/Active), Green(Not used)

Module Location About 14Vdc
General Specification
UL System Power Supply voltage : 24Vdc nominal, Class2
System Power Supply voltage : 24Vdc nominal
Supply voltage range : 15~30Vdc
Protection : Output current limit (Min. 1.5A) – Reverse polarity protection
Power Dissipation 70mA typical @ 24Vdc
Current for I/O Module 1.5A @ 5Vdc**
UL Field Power Supply voltage : 24Vdc nominal, Class2
Isolation System power to internal logic : Non-isolation
System power I/O driver : Isolation
Field Power Supply voltage : 24Vdc typical (Max. 30Vdc) ***
Max. Current Field Power Contact DC 10A Max
Weight 162g
Module Size 54mm x 99mm x 70mm