B&B Electronics RS-485 Digital I/O Module 485SDD16 - Manual (Page 6)

485SDD16-1005 Manual 7
B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Figure 2.1 - Example of Multi-Node Network
485SDD16 485SDD16 485SDD16
Figure 2.2 - RS-485 2-wire Connection
8 485SDD16-1005 Manual
B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Figure 2.3 - RS-422 4-wire Connection
Power Supply Connections
Power to the 485SDD16 must be supplied by an external power
supply connected to the +12Vdc and GND terminal blocks or to the
I/O connector. An external power supply must be able to supply 8 to
16 Vdc at 35ma.
NOTE: Power requirements of the module does not include the
power consumption of any external devices connected to the
module. Therefore, any current that is sourced by the digital outputs
must be added to this value and the current must not exceed the
maximum output source current. Refer to the 485SDD16
Specification Section of Chapter 1.