PAGE 34 | 06 Apr 2000 | CH. 6: COMMUNICATIONS |
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6.6Current Loop
The following diagram shows the connection to a device with an active 20mA current loop. The current loop on the TIU100/110 is passive. Either the PLC must provide the 20mA source or an external current source must be supplied.
20m A Loop
20m A Lo o p
T+ | 9 |
T- | 10 |
R+ | 11 |
R - | 12 |
+SR
ST -
Figure 6.4 – Current Loop
Note: Current Loop is not a standard option on the TIU100/110. Current loop must be ordered specifically or can be
Note: Current Loop is not an option with the TIU050/101/102/103/111/112/113/20X.
