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Appendix BSpecifications
192
External variable
resistor connector
External variable
resistor
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 B7A Link Terminals
16-point input: C200H-B7AI1
B7A-T6j1 (Screw terminal models)
B7A-T6D2 (Modular models)
16-point output: C200H-B7AO1
B7A-R6jj1 (Screw terminal models)
B7A-R6A52 (Modular models)
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.
12 to 24 VDC
I/O indicator
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.
ERR indicator
Connection terminals
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