Black Box 232/CL-E - Page 13

14
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER
T+
T-
R+
R-
T+
T-
R+
R-
T+
T-
R+
R-
T+
T-
R+
R-
Figure 4-4. 4-Wire Multipoint.
T+
T-
R+
R-
R+
R-
T+
T-
Figure 4-3. 4-Wire Point-to-Point.
Passive
Passive
Passive
Active