Black Box 232/CL-E - 2-Wire Current Loop

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RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER
4.2.2 2-W IRE C URRENT L OOP
Connections to a 2-wire half-duplex
multipoint current loop depend on
whether the CL050 is used as an active
or passive unit. Note the connections
in Table 1. The connections are also
shown in Figures 4-5, 4-6, and 4-7.
Note: Not all 2-wire current loops are
bidirectional half-duplex. Some
current loops are simplex.