Connect Tech JB0, JB1, JB2, JB3 Technical Notes, Appendices - RS-485/422 Interface, Example

4-12 Chapter 4: Appendices – RS-485/422 Interface

Example

The following example shows the settings on JC, JD, JE and JF where RS-485 port 1 is terminated on RTS ± and TxD ±, the RS-485 port 2 is set for bias/termination on RTS ±, TxD ±, CTS

±, and RxD ±, the RS-485 port 3 is not terminated, and port 4 is set for RS-232 on jumper block JB and therefore should not be terminated

JC

JC1

JC2

JC3

JC4

JC5

JC6

PORT 1

JD

JD1

JD2

JD3

JD4

JD5

JD6

PORT 2

JE

JE1

JE2

JE3

JE4

JE5

JE6

PORT 3

JF

JF1

JF2

JF3

JF4

JF5

JF6

PORT 4

Jumper Legend

1 = CTS terminator & bias

2 = CTS terminator & bias

3 = RxD terminator & bias

4 = RxD terminator & bias

5 = TxD terminator

6 = RTS terminator

Technical Notes:

1.For full duplex and multi-drop slave you can jumper positions 1, 2, 3, 4, 5, and 6, on the appropriate jumper block (JC, JD, JE or JF) if you want them terminated.

2.For RS-232 ports do not jumper positions 1, 2, 3, 4, 5, and 6, on the appropriate jumper block (JC, JD, JE or JF).

Titan/cPCI User’s Manual, ver. 0.00