Omron C200HE-CPU42-E Instruction Manual page 217

Specifications
Wire as shown below.
Caution Ensure that the external variable resistor connectors are open when using the internal variable
!
resistor.
Standard B7A Interface Unit C200H-B7AI1/B7AO1
The Standard B7A Interface Unit used with the B7A Link Terminal allows the transmission and reception of
16-point I/O data over two wires.
The following Standard B7A Interface Unit and B7A Link Terminal models are available.
B7A Interface Unit
16-point input: C200H-B7AI1
16-point output: C200H-B7AO1
Note If the B7A Interface Unit is mounted to a Rack with a C200HW-PD024 24-VDC Power Supply Unit, supply
24 VDC from an independent power supply to the B7A Interface Unit or use a transformer to separate the
power supply line to the B7A Interface Unit from the power supply lines to the CPU Unit and I/O Power Sup-
ply Unit.
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Analog Timer
Unit Timer
External variable
resistor connector
B7A Link Terminals
B7A-T6j1 (Screw terminal models)
B7A-T6D2 (Modular models)
B7A-R6jj1 (Screw terminal models)
B7A-R6A52 (Modular models)
12 to 24 VDC
External variable
resistor
I/O indicator
ERR indicator
Connection terminals
Connection terminals for the B7A Link Terminal:
Connect this terminal to the SIG terminal of the
B7A Link Terminal.
Connect this terminal to the negative power ter-
minal of the B7A Link Terminal.
Supply 12 to 24 VDC.
Appendix B