Omron 3G2A5-LK003-E — PC Link Unit

Part number	3G2A5-LK003-E
Brand	Omron
Description	PC Link Unit
Manufacturer	Omron
Product Type	PC Link Unit
Product Line	3G2
Part Number	3G2A5-LK003-E
Weight	1.31 lbs (0.60 kg)
Compatible Modules	C500 PLC
Synchronization	HDLC
Communication Method	Two-wire half-duplex (using electrical cable only) or four-wire half-duplex (using both electrical and optical fiber cables)
Transmission Speed	128 kbps
Transmission Method	Broadcasting
Transmission Distance	500 meters (including branch lines)
Number of Link Relay Bits per Unit	32 to 512 bits
Maximum Number of PC Link Units	32 units
Maximum Transmission Time	35 ms (for 128 bits with 8 PC Link Units)
Diagnostic Functions	CPU watchdog timer; CRC transmission error check
Cable Used	Shielded twisted-pair cable
Current Consumption	510 mA maximum at 5 VDC

The 3G2A5-LK003-E from Omron is a PC link unit tailored for use with C500 PLC modules. It provides reliable communication via HDLC synchronization, supporting both two-wire and four-wire half-duplex methods, achieving transmission speeds of up to 128 kbps.

Compatibility data for this part number is being verified. Send an RFQ with your equipment model and serial — our suppliers confirm fitment before quoting.

Data compiled from 1 verified source. Last reviewed 2026-08-16.