You will need to ascertain what your communication requirements are going to be, which will help you to select the proper communication modules for your system. Processors used in the SLC 500 PLC system communicate across the 1746 backplane, contained in the chassis, to the various Input/Output modules in the system. The different processors have a variety of communication ports on board for communication with other processors and computers. These varied communication ports will be part of the criteria you will use in selecting the right processors for your system. Every processor in the SLC 500 series has one or two built-in ports for direct communication with EtherNet/IP, DH+, DH-485, or RS-232 (DFI, ASCII, or DH-485 protocols).
Additionally, separate modules can be incorporated into the system's design to provide other communication ports within the system. Modules for ControlNet and Universal Remote Input/Output links are an option, as well as I/O adapter modules to interface I/O modules with scanner ports in remote locations. The Communication Modules available are denoted in the following table.
| PART NUMBER |
DESCRIPTION |
| 1761-NET-ENI |
ETHERNET INTERFACE, 24 VDC, 10/100 Mbps, SERIES C DEVICE |
| 1761-NET-ENIW |
WEB-ENABLED ETHERNET INTERFACE, 24 VDC, 10/100 Mbps, SERIES C DEVICE |
| 1747-KFC15 |
CONTROLNET MESSAGING MODULE, 4-DIGIT, 7-SEGMENT DISPLAY; RS-232 TO SLC |
| 1747-SCNR |
CONTROLNET SCANNER, CONTROLS BOTH DISCRETE & ANALOG I/O |
| 1747-ACN15 |
CONTROLNET ADAPTER, 0.9 A @ 5 VDC, SINGLE & GROUP MODULE CONNECTION |
| 1747-ACNR15 |
CONTROLNET ADAPTER, 0.9 A @ 5 VDC, SINGLE & GROUP MODULE CONNECTION
MEDIA REDUNDANCY VIA DUAL BNC CONNECTORS |
| 1747-SDN |
DEVICENET SCANNER MODULE, 500 mA/5 VDC, 90 mA/24 VDC, 125/250/500 Kbps |
| 1761-NET-DNI |
DEVICENET INTERFACE, 200 mA/24 VDC, 125/250/500 Kbps, ONLINE MONITORING |
| 1747-KE |
DH-485/RS-232C INTERFACE MODULE, DF1 PROTOCOL, 150 mA/5 VDC, 40 mA/24 VDC |
| 1761-NET-AIC |
ADVANCED INTERFACE CONVERTER, ISOLATED (2) RS-232 TO RS-485 CONVERTER,
120 mA/ 24 VDC, INRUSH MAX 200 mA/ 24 VDC, 500 VDC ISOLATION |
| 1747-AIC |
ISOLATED LINK COUPLER, CONNECTS PROCESSOR TO DH-485 NETWORK |
| 1747-UIC |
USB TO DH-485 CONVERTER, ˂100 mA USB, USB 1.1/ 12 Mbps, DH-485 BAUD/19.2 Kbps |
| 1747-SN |
REMOTE I/O SCANNER, WIDE AREA DISTRIBUTION (10,000 FT), CONNECTS 16/32 DEVICES, 600 mA |
| 1747-BSN |
BACKUP REMOTE I/O SCANNER, SUPPORTS REDUNDANCY & REPAIR OF SYSTEM FAULTS, 800 mA |
| 1747-ASB |
REMOTE I/O SCANNER, COMMUNICATION LINK WITH I/O MODULES, 375 mA |
| 1747-DCM |
DIRECT COMMUNICATION MODULE, PLACED IN CHASSIS WITH PROCESSOR, 360 mA |
