1771-P7 AB Allen-Bradley PLC Power Supply 1771 Series Original brand new

1771-DB AB PLC Communication Module EtherNet/IP 1771 Series Original brand new

1771 Communication Modules
In addition to the on-board ports available with PLC-5 processors, you have the option of providing another communication port for a PLC-5 processor by adding a communication module.
Communication Modules

Cat. No.	Description	Communication with PLC Processor	Operation	Communication Port Protocol
1785-ENET	PLC-5 EtherNet/IP™ Interface Module	Direct connection to channel 3 of a PLC-5 processor	Process messages	EtherNet/IP
1771-DB	PLC BASIC Module	Block-transfer with PLC-5 processor	•BASIC programs •C programs	•RS-232-C •RS-422-A •RS-485 •DH-485
1771-SDN	PLC DeviceNet Scanner Module	Block-transfer with PLC-5 processor	•Scan I/O •Process messages	DeviceNet