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Chapter 2 Product Specifications
2-5
2.5 Terminal Resistance
For communication via RS-422/RS-485 channel, terminal resistance from external must be connected. Terminal resistance has the
function to prevent distortion of signal by reflected wave of cable for long-distance communication, and the same resistance (1/2W)
as characteristic impedance of cable must be connected to terminal of network.
When using the recommended cable in 2.4, connect terminal resistance of 120
Ω
to both ends of cable. Also when using other cable
than recommended, the same resistance (1/2W) as characteristic impedance of cable must be connected to both ends of cable.
▶ Terminal Resistance: 1/2W, 120Ω, tolerance of 5%
(1)
How to connect with terminal resistance, When using RS-422 connection
[Fig. 2.5.1] RS-422 connection with Terminal Resistance
[Fig. 2.5.2] RS-422 connection with Terminal Resistance by
hardware version
TX+
TX-
RX+
RX-
SG
TX+
TX-
RX+
RX-
SG
TX+
TX-
RX+
RX-
SG
SG
RX-
RX+
TX-
TX+
(Less then V2.0)
(Less then V2.0)
(Less then V2.0)
(V2.0 or Later)
Содержание XGL-C22A
Страница 74: ...Chapter 6 Communication Parameter 6 22 4 Click I O Sync 6 Read the message If there is no problem click OK ...
Страница 172: ...Chapter 8 Modbus Communication 8 23 ...
Страница 246: ...Chapter 10 Program Examples 10 40 XG 5000 program Sequence Program 1 2 3 4 ...
Страница 247: ...Chapter 10 Program Examples 10 41 Sequence Program 5 6 ...
Страница 289: ...Appendix A 23 Sub procedure module When port open event occurs perform the next module ...
Страница 291: ...Appendix A 25 The lower code shows BCC check setting ...
Страница 296: ...Appendix A 30 4 Example Register monitor X 5 Example execution monitor Y Address of server Monitor result ...
Страница 297: ...Appendix A 31 A 4 Dimension Unit mm XGL C22A CH2A C42A H W version Less than V2 0 H W version V2 0 or Later ...