Omron SYSMAC C200H Installation Manual page 161

Specifications
! Caution Ensure that the external variable resistor connectors are open when using the internal variable
resistor.
Standard B7A Interface Units (C200H-B7AI1/B7AO1)
The 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 B7A Interface Units and B7A Link Terminal models are available.
B7A Interface Unit
16-point input: C200H-B7AI1
16-point output: C200H-B7AO1
Mount the B7A Interface Unit (C200H-B7AO1) to the C200H-BCjj1-V1 or C200H-BCjj1-V2 Backplane.
Note 1. The B7A Interface Terminal can be connected only to 16-point B7A Link Terminals and then only if the
Terminal has a standard transmission delay (i.e., 19.2 ms)
2. If the B7A Interface Unit is connected to the C200H-CPU23-E or C200H-PS211, 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 Supply Unit.
12 to 24 VDC
I/O Indicators
Indicate the ON or OFF status of inputs from the B7A Link Terminal or the ON and OFF status of outputs to the B7A
Link Terminal.
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External variable
resistor connector
I/O indicators
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.
External variable
resistor
B7A Link Terminals
B7A-T6j1 (Screw terminal models)
B7A-T6D2 (Modular models)
B7A-R6jj1 (Screw terminal models)
B7A-R6A52 (Modular models)
Appendix B